| IWAI Hisato | |
| Faculty of Science and Engineering Department of Electronics | |
| Professor |
Last Updated :2025/04/26
Researcher Profile and Settings
researchmap
Research Interests
Research Areas
- Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Communication and network engineering
Research History
- 1986-1989 Study on rain attenuation in satellite communications
- 1989-1993 Study on antennas and propagation in satellite communications
- 1993-1996 Study on propagation and radio commnication systems
- 1996-1997 Study on CDMA cellular communications
- 1997-1999 Study on 3rd generation cellular systems
- 1999-2001 Study on radion communication systems and network in cellular communications
- 2001-2002 Study on radio communication systems for vehicular communications
- 2002-2004 Study on software defined radio (SDR) and propagation
- 2004-2005 Study on adhoc communications
- 2005- Study on future generation transmission system, wireless security techniques, SDR, propagation and adhoc communications
Research Experience
- Doshisha University, Faculty of Science and Engineering, Department of Electronics, 2012/04 - Today
- Doshisha University, Faculty of Science and Engineering, Department of Electronics, 2008/04 - 2012/03
- 同志社大学工学部電子工学科 助教授, 2005/04 - 2007/03
- Advanced Telecommunications Research Institute International, 2004/12 - 2005/03
- KDDI R&D Laboratories Inc., 2002/05 - 2004/11
- 株式会社トヨタIT開発センターシニアリサーチャ, 2001/04 - 2002/05
- 米国Telcordia Technologies社客員研究員, 1999/05 - 2001/03
- 株式会社KDD研究所 主任研究員, 1997/08 - 1999/04
- 米国カリフォルニア大学サンディエゴ校(UCSD) 客員研究員, 1996/08 - 1997/07
- 国際電信電話株式会社研究所, 1989/04 - 1996/07
Education
- Kyoto University, 工学研究科, 電気工学第二専攻, 1987/03 - 1989/04
- Kyoto University, Graduate School, Division of Engineering, - 1989
- Kyoto University, Faculty of Engineering, 電気工学第二学科, 1983/04 - 1987/03
- Kyoto University, Faculty of Engineering, - 1987
- Nara Women's University, Faculty of Letters, 1979/04 - 1982/03
Association Memberships
Committee Memberships
- アンテナ・伝播研究専門委員会幹事、英文論文誌B編集委員, 2007 - 2009, 電子情報通信学会, Society, 電子情報通信学会
- URSI-F小委員会 幹事, - , 日本学術会議 電気電子工学委員会, Society, 日本学術会議 電気電子工学委員会
Awards
- 電子情報通信学会アンテナ・伝播研究会功労賞
2019 - 電子情報通信学会通信ソサイエティ活動功労賞
2019 - 通信ソサイエティ功労顕彰状
2018 - 電子情報通信学会通信ソサイエティ活動功労賞
2017 - 電子情報通信学会アンテナ・伝播研究会功労賞
2017 - 通信ソサイエティ功労顕彰状
2016 - 電子情報通信学会アンテナ・伝播研究会功労賞
2015 - 電子情報通信学会通信ソサイエティ活動功労賞
2014 - 電子情報通信学会アンテナ・伝播研究会功労賞
2014 - 電子情報通信学会通信ソサイエティ活動功労賞
2013 - 電子情報通信学会アンテナ・伝播研究会功労賞
2012 - 電子情報通信学会アンテナ・伝播研究会功労賞
2011 - 電子情報通信学会通信ソサイエティ活動功労賞
2011, Japan - 電子情報通信学会通信ソサイエティ活動功労賞
2009 - 電子情報通信学会アンテナ・伝播研究会功労賞
2009 - 電子情報通信学会論文賞
2008, Japan - 電子情報通信学会通信ソサイエティ活動功労賞
2007, Japan - 電子情報通信学会アンテナ・伝播研究会功労賞
2007, Japan - 電子情報通信学会通信ソサイエティ活動功労賞
2005 - 電子情報通信学会学術奨励賞
1994, Japan
Published Papers
- Blind Self-Interference Analog Canceller with Differential Delay for Backscatter Communications
Koichi Nishikawa; Shinsuke Ibi; Takumi Takahashi; Hisato Iwai
2024 Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), IEEE, 1 - 6, 03 Dec. 2024, International conference proceedings - Data-Driven Tuning for Weighted Least Squares of BLE-AoA-based Indoor Localization
Ginji Ohashi; Shinsuke Ibi; Takumi Takahashi; Hisato Iwai
2024 Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), IEEE, 1 - 6, 03 Dec. 2024, International conference proceedings - Analysis of Frequency Characteristics of Leaf Attenuation by a Finite-Difference Time-Domain Method
Yoshiki Nakanishi; Yusuke Hata; Sigeo Gotoh; Hisato Iwai; Shinsuke Ibi
2024 International Symposium on Antennas and Propagation (ISAP), IEEE, 1 - 2, 05 Nov. 2024, International conference proceedings - Estimation Formula of Unmanned Aerial Vehicle Base Stations Density for Required Line-of-Sight Probability in Urban Environments
Yusuke Hata; Hisato Iwai; Shinsuke Ibi
IEICE Communications Express, Institute of Electrical and Electronics Engineers (IEEE), 13(6) 198 - 201, Jun. 2024, Scientific journal - Blind Self-Interference Canceller with Adaptive Differential Delay for IBFD in the Presence of Fractional Delay Path
Koichi Nishikawa; Shinsuke Ibi; Takumi Takahashi; Hisato Iwai
2023 IEEE 98th Vehicular Technology Conference (VTC2023-Fall), IEEE, 10 Oct. 2023, International conference proceedings - Deep Unfolding-Aided Sum-Product Algorithm for Error Correction of CRC Coded Short Message
Qilin Zhang; Shinsuke Ibi; Takumi Takahashi; Hisato Iwai
2022 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC), IEEE, 07 Nov. 2022, International conference proceedings - Distance Detection to a Human Body in a Sensing Technique Based on Changes of Antenna Characteristics
Kazuki Shintani; Satoru Shimizu; Koudai Nagatomo; Hisato Iwai; Shinsuke Ibi; Takuya Kurihara; Toshikazu Sakano
2022 International Symposium on Antennas and Propagation (ISAP), IEEE, 31 Oct. 2022, International conference proceedings - A Study of Proximity Sensor Circuit Focusing on Variations in Antenna Impedance
Takuya Kurihara; Kazunobu Serizawa; Satoru Shimizu; Toshikazu Sakano; Kazuki Shintani; Koudai Nagatomo; Hisato Iwai; Shinsuke Ibi
2022 IEEE 33rd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), IEEE, 12 Sep. 2022, International conference proceedings - A study on performance improvement of a wave source location estimation technique based on received power distribution model
Takato Akiyama; Seiryu Okamoto; Yuki Kawai; Ryo Goto; Satoru Shimizu; Hisato Iwai; Shinsuke Ibi
The Harris science review of Doshisha University, 63(2) 71 - 75, 31 Jul. 2022, Research institution - Development of Proximity Sensor Focusing on Variations in Antenna Impedance
Satoru Shimizu; Takuya Kurihara; Yoshinori Suzuki; Kenjiro Kubo; Kazuki Shintani; Hisato Iwai
IEEJ Transactions on Electronics, Information and Systems, Institute of Electrical Engineers of Japan (IEE Japan), 141(11) 1156 - 1157, 01 Nov. 2021, Scientific journal - Position estimation method considering directivity of a transmitter
Takato Akiyama; Seiryu Okamoto; Ryo Goto; Yuki Kawai; Satoru Shimizu; Hisato Iwai; Shinsuke Ibi
IEICE Communications Express, Institute of Electronics, Information and Communications Engineers (IEICE), 10(9) 619 - 624, 01 Sep. 2021, Scientific journal - Detection of paper sheets based on variation of antenna resonance characteristics
Kenjiro Kubo; Kazuki Shintani; Hisato Iwai; Shinsuke Ibi; Takuya Kurihara; Satoru Shimizu; Yoshinori Suzuki
IEICE Communications Express, Institute of Electronics, Information and Communications Engineers (IEICE), 10(9) 625 - 628, 01 Sep. 2021, Scientific journal - Evaluation of characteristics of blind radio signal separation using independent component analysis
Hideichi Sasaoka; Hisato Iwai
The Harris science review of Doshisha University, 61(4) 185 - 195, Jan. 2021, Research institution - Analysis of Characteristics of an Antenna for Detection of Human Body and Paper
Kenjiro Kubo; Hisato Iwai; Takuya Kurihara; Satoru Shimizu; Yoshinori Suzuki
Proceedings of International Symposium on Antenna and Propagations (ISAP) 2020, Jan. 2021, International conference proceedings - Estimation of Total Interference Power by Clustering Multiple Wireless Nodes
Ryota Morimoto; Hisato Iwai; Shinsuke Ibi; Takuya Kurihara; Satoru Shimizu; Kazuto Yano; Yoshinori Suzuki
Proceedings of International Symposium on Antenna and Propagations (ISAP) 2020, Jan. 2021, International conference proceedings - Measurement of Received Polarization Characteristics by a Vehicle-Mounted Antenna in Cellular Communication Environments
Okamoto Seiryu; Kawai Yuki; Hijirikawa Kei; Hisato Iwai; Shinsuke Ibi
Proceedings of International Symposium on Antenna and Propagations (ISAP) 2020, Jan. 2021, International conference proceedings - 移動伝搬特性に基づくグループ鍵共有の秘密鍵容量(その2) : 鎖型接続の場合
笹岡 秀一; 岩井 誠人
同志社大学ハリス理化学研究報告, 61(3) 154 - 164, Oct. 2020, Research institution - 与干渉制御のための独立成分分析に基づくチャネル推定の検討
笠井 太智; 衣斐 信介; 笹岡 秀一; 岩井 誠人
同志社大学ハリス理化学研究報告, 61(3) 176 - 183, Oct. 2020, Research institution - 大規模屋内空間における空間規模の拡大による電波伝搬特性への影響評価
西辻 雄登; 五島 成夫; 岩井 誠人; 衣斐 信介
同志社大学ハリス理化学研究報告, 61(2) 53 - 61, Jul. 2020, Research institution - 移動伝搬特性に基づくグループ鍵共有の秘密鍵容量 : (その1)星型接続の場合
笹岡 秀一; 岩井 誠人
同志社大学ハリス理化学研究報告, 61(2) 69 - 78, Jul. 2020, Research institution - OFDMにおける摂動ベクトルを用いたPAPR抑圧に関する検討
杉本 靖直; 衣斐 信介; 笹岡 秀一; 岩井 誠人
同志社大学ハリス理化学研究報告, 61(2) 108 - 115, Jul. 2020, Research institution - 移動伝搬特性に基づくグループ秘密鍵共有の初期検討 : (その1)星型接続における従来方式の課題と新方式の提案
笹岡 秀一; 岩井 誠人
同志社大学ハリス理化学研究報告, 60(4) 194 - 203, Jan. 2020, Research institution - 移動伝搬特性に基づくグループ秘密鍵共有の初期検討 : (その2)鎖型接続における従来方式の課題と新方式の提案
笹岡 秀一; 岩井 誠人
同志社大学ハリス理化学研究報告, 60(4) 204 - 213, Jan. 2020, Research institution - Evaluation of performance improvement of space selective modulation by increasing number of transmitting antennas
Daiki Fukushima; Hideichi Sasaoka; Hisato Iwai; Shinsuke Ibi
IEICE COMMUNICATIONS EXPRESS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, 9(6) 207 - 212, 2020, Scientific journal - RSSI差分情報の通知によるグループ秘密鍵共有における盗聴により漏洩する情報量の評価
黒柳 啓太; 笹岡秀一; 岩井 誠人
電子情報通信学会論文誌 B, J102-B(11) 782 - 790, Nov. 2019 - Reduction of Influence of Reflected Waves on Measurement of Human Body Shadowing Loss in an Indoor Environment
Kenjiro Kubo; Hisato Iwai; Hideichi Sasaoka; Shinsuke Ibi
2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings, IEEE, Oct. 2019, International conference proceedings - A Simplified Estimation Method of Propagation Loss in V2V Communication Environments considering Blocking Vehicles
Kentaro Yamane; Hisato Iwai; Hideichi Sasaoka; Shinsuke Ibi
2019 International Symposium on Antennas and Propagation, ISAP 2019 - Proceedings, IEEE, Oct. 2019, International conference proceedings - 人工高速フェージングを用いた秘密情報伝送における独立成分分析による盗聴法とその対策の検討
桐野 悟至; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J102-B(11) 674 - 684, Sep. 2019, Scientific journal - Evaluation of Position Estimation of a Human Body around a Vehicle by FDTD Propagation Analysis
Yuki Ito; Hisato Iwai; Hideichi Sasaoka; Kiyokazu Ieda
ISAP 2018 - 2018 International Symposium on Antennas and Propagation, Harris Science Research Institute of Doshisha University, 60(2) 60 - 67, Jul. 2019 - 支配的な伝搬経路の物理的検討に基づく仮想的都市環境レイトレーシングデータの伝搬損失推定式
杉本 智哉; 川崎 翔平; 岩井誠人; 笹岡 秀一
電子情報通信学会論文誌 B, J102-B(7) 498 - 507, Jul. 2019, Scientific journal - Performance Evaluation of Terminal Position Detection based on DOA in an Indoor Environment
Takuma Inui; Hisato Iwai; Hideichi Sasaoka
ISAP 2018 - 2018 International Symposium on Antennas and Propagation, IEEE, 25 Jan. 2019, International conference proceedings - Analysis of Diffraction Characteristics at 28GHz Band in a Vehicular Communication Environment
Shohei Kawasaki; Yuki Ito; Hisato Iwai; Satoshi Nakano; Yasuhiro Suegara; Masaya Sibayama; Masahito Umehara
ISAP 2018 - 2018 International Symposium on Antennas and Propagation, IEEE, 25 Jan. 2019, International conference proceedings - Characterization of Human Body Shadowing Loss at 2.5 GHz and 5.8 GHz in an Indoor Environment
Santiago Perez-Pena; Yuki Ito; Kai Yoshida; Hisato Iwai; Hideichi Sasaoka
ISAP 2018 - 2018 International Symposium on Antennas and Propagation, IEEE, 25 Jan. 2019, International conference proceedings - Accuracy Improvement of Distance Estimation Based on Received Signal Strength by Active Propagation Control
Kazunori Ogou; Hisato Iwai; Hideichi Sasaoka
2018 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM 2018, 14 Nov. 2018, International conference proceedings - Estimation of Received Signal at Arbitrary Remote Location Considering Propagation Characteristics
Yuto Nishitsuji; Hisato Iwai; Hideichi Sasaoka
2018 IEEE International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM 2018, 14 Nov. 2018, International conference proceedings - 室内環境におけるフレネルゾーンに基づく人体遮蔽損失特性の評価
伊藤 優希; 岩井; 誠人; 笹岡 秀一
電子情報通信学会論文誌 B, J101-B(9) 696 - 705, Sep. 2018 - MIMOを用いた秘密情報伝送における独立成分分析による盗聴の対策
桐野 悟至; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J101-B(9) 717 - 728, Sep. 2018 - フェージング変動に基づく秘密鍵共有における標本間隔の縮小と多値量子化による秘密鍵容量の増加限界の検討
黒柳 啓太; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J101-B(9) 706 - 716, Sep. 2018, Scientific journal - MIMOシステムにおける秘密信号と擬似複素ガウス信号の乗積信号を用いた秘密鍵配送方式
市川 力; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J101-B(7) 546 - 557, Jul. 2018, Scientific journal - Estimation of Propagation Properties at a Remote Location Using MUSIC Method in a 3-Dimensional Space
Shunsuke Abe; Hisato Iwai; Hideichi Sasaoka
同志社大学ハリス理化学研究報告 = The Harris science review of Doshisha University, Harris Science Research Institute of Doshisha University, 59(2) 66 - 72, Jul. 2018 - Estimation of Channel State at a Different Radio Frequency Based on Impulse Response Estimation by Compressed Sensing
Yuma Nakai; Hisato Iwai; Hideichi Sasaoka
同志社大学ハリス理化学研究報告 = The Harris science review of Doshisha University, Harris Science Research Institute of Doshisha University, 59(2) 81 - 89, Jul. 2018 - Secret Key Agreement Scheme Based on Phase Variation of Fading in Mobile Communications
Hiroki Nakai; Hideichi Sasaoka; Hisato Iwai
同志社大学ハリス理化学研究報告 = The Harris science review of Doshisha University, Harris Science Research Institute of Doshisha University, 59(2) 113 - 124, Jul. 2018 - 電波伝搬特性に基づく信号分解と空間ベクトル合成を用いた秘密情報伝送方式
辻 和輝; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J100-B(9) 782 - 794, Sep. 2017, Scientific journal - 伝搬係数の共有とアンテナ重み情報の公開伝送を用いた秘密情報共有方式
樋口 拓己; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J100-B(7) 449 - 457, Jul. 2017, Scientific journal - A Study on Blind Signal Separation Using Independent Component Analysis in Multiple Antenna Systems
Yuki Norimatsu; Hideichi Sasaoka; Hisato Iwai
同志社大学ハリス理化学研究報告 = The Harris science review of Doshisha University, Harris Science Research Institute of Doshisha University, 58(2) 63 - 72, Jul. 2017 - FDTD analysis of indoor propagation characteristics for improvement of wireless transmission by active propagation control
Ryo Araki; Hisato Iwai; Hideichi Sasaoka
2017 IEEE International Conference on Computational Electromagnetics, ICCEM 2017, IEEE, 55 - 57, Apr. 2017, International conference proceedings - Extension of a received signal estimation method at a remote location to a 3-dimensional space
Shunsuke Abe; Hisato Iwai; Hideichi Sasaoka
ISAP 2016 - International Symposium on Antennas and Propagation, IEEE, 1022 - 1023, 17 Jan. 2017, International conference proceedings - Estimation of received signals at arbitrary remote locations based on estimation of arriving waves by compressed sensing
Tomoya Sugimoto; Hisato Iwai; Hideichi Sasaoka
ISAP 2016 - International Symposium on Antennas and Propagation, IEEE, 1034 - 1035, 17 Jan. 2017, International conference proceedings - Estimation of propagation characteristics at remote locations based on estimation of arriving waves by compressed sensing
Sugimoto Tomoya; Iwai Hisato; Sasaoka Hideichi
IEICE Communications Express, The Institute of Electronics, Information and Communication Engineers, 6(6) 341 - 345, 2017, Scientific journal - Performance evaluation of propagation control devices for active propagation control
Araki Ryo; Iwai Hisato; Sasaoka Hideichi
IEICE Communications Express, The Institute of Electronics, Information and Communication Engineers, 6(6) 346 - 351, 2017 - Improvement of delay profile estimation using wireless LAN signal
Atsuki Morita; Hisato Iwai; Hideichi Sasaoka
2016 URSI Asia-Pacific Radio Science Conference, URSI AP-RASC 2016, IEEE, 1387 - 1390, 19 Oct. 2016, International conference proceedings - 公開通信路による乱数伝送と電波伝搬特性に基づく部分系列選択を用いた秘密鍵共有方式の検討
松本 達矢; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J99-B(9) 665 - 674, Sep. 2016, Scientific journal - MIMOシステムにおける秘密信号と複素ガウス信号の乗積信号を用いた秘密鍵配送方式
瀧村 拓馬; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J99-B(9) 772 - 781, Sep. 2016, Scientific journal - 電波伝搬特性の事前測定に基づく複数アンテナを用いた秘密鍵共有方式
樋口 拓己; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J99-B(9) 675 - 683, Sep. 2016, Scientific journal - 見通し外車車間通信環境におけるレイトレーシングに基づく伝搬損失簡易計算式
菅江 一平; 岩井誠人; 笹岡 秀一
電子情報通信学会論文誌 B, J99-B(7) 515 - 524, Jul. 2016, Scientific journal - MIMOシステムにおけるガウス性秘匿信号を用いた無線ステガノグラフィ
保海 佳佑; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J99-B(7) 471 - 480, Jul. 2016, Scientific journal - Performance Evaluation of Propagation Control Devices for Active Propagation Control
Ryo Araki; Kenichiro Kamohara; Hisato Iwai; Hideichi Sasaoka
ISAP 2016 - International Symposium on Antennas and Propagation, IEEE, 116(43) 17 - 22, 19 May 2016 - Secret Information Transmission Scheme in MIMO System Using Time-variant Pre-coding
Hideichi Sasaoka; Takuma Takimura; Hisato Iwai
同志社大学ハリス理化学研究報告 = The Harris science review of Doshisha University, Harris Science Research Institute of Doshisha University, 57(1) 7 - 17, Apr. 2016 - Identification of line of sight by cross polarization characteristic
Atsuki Morita; Hisato Iwai; Hideichi Sasaoka
2015 International Symposium on Antennas and Propagation, ISAP 2015, IEEE, Apr. 2016, International conference proceedings - Effectiveness evaluation of Combined Time Windowing with narrow frequency bandwidth for WNC-OFDM
Kadota Kosuke; Takakusaki Keiji; Iwai Hisato; Shinbo Hiroyuki
IEICE Communications Express, The Institute of Electronics, Information and Communication Engineers, 5(7) 223 - 228, 2016, Scientific journal - Performance Evaluation of Active Propagation Control in a Three-Dimensional Indoor Environment
Kenichiro Kamohara; Hisato Iwai; Hideichi Sasaoka
2015 International Symposium on Antennas and Propagation, ISAP 2015, Harris Science Research Institute of Doshisha University, 56(4) 275 - 281, Jan. 2016, International conference proceedings - Evaluation of eavesdropping performance against secret key agreement technique using a received signal estimation method
Jian Ma; Makoto Tanaka; Hisato Iwai; Hideichi Sasaoka
2015 International Workshop on Electromagnetics: Applications and Student Innovation Competition, iWEM 2015, Institute of Electrical and Electronics Engineers Inc., 23 Dec. 2015, International conference proceedings - A Terminal Position Estimation Method based on Position Fingerprint using Directional Antennas
Ryo Yamada; Hisato Iwai; Hideichi Sasaoka
2015 International Symposium on Antennas and Propagation, ISAP 2015, IEEE, 115(164) 119 - 124, 30 Jul. 2015 - MIMOシステムを用いた無線ステガノグラフィ
保海 佳佑; 笹岡; 秀一; 岩井 誠人
電子情報通信学会論文誌 B, J98-B(7) 537 - 546, Jul. 2015, Scientific journal - 複数アンテナを用いた秘密鍵共有方式の秘密鍵容量
岩本尚希; 笹岡秀一; 岩井誠人
電子情報通信学会論文誌 B, J98-B(7) 547 - 556, Jul. 2015, Scientific journal - A Study on Estimation Method of Communication Area using Cooperated Monitoring of Communication Quality in Cognitive Radio
Tatsuya Murayama; Hideichi Sasaoka; Hisato Iwai
同志社大学ハリス理化学研究報告 = The Harris science review of Doshisha University, Harris Science Research Institute of Doshisha University, 56(2) 95 - 105, Jul. 2015 - Evaluation of Terminal Position Estimation by Position Fingerprinting Technique of Radio Wave Using Array Antenna
Mayu Ohtani; Hisato Iwai; Hideichi Sasaoka
同志社大学ハリス理化学研究報告 = The Harris science review of Doshisha University, Harris Science Research Institute of Doshisha University, 56(1) 41 - 47, Apr. 2015 - Estimation of a Received Signal at an Arbitrary Remote Location Using MUSIC Method
TANAKA Makoto; IWAI Hisato; SASAOKA Hideichi
IEICE Transactions on Communications, The Institute of Electronics, Information and Communication Engineers, 98(5) 806 - 813, 2015, International conference proceedings - Study on Improvement of NC-OFDM Transmission Performance with Reduction of Out-of-Band Emission by a Windowing Method
Sanemasu Daisuke; Iwai Hisato; Sasaoka Hideichi
The science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 55(2) 93 - 100, Jul. 2014 - Wireless Steganography using a Spectrum Spreading Technique
Takai Akihito; Sasaoka Hideichi; Iwai Hisato
The science and engineering review of Doshisha University, Doshisha University, 55(2) 101 - 108, Jul. 2014 - Entity Authentication Scheme for Wireless Terminal Based on Location Identification Using ESPAR Antenna
Otani Naoki; Iwai Hisato; Sasaoka Hideichi
The science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 55(1) 10 - 18, Apr. 2014 - Study on interference signal cancellation in-vehicle communication systems
Ippei Sugae; Shuhei Mizuguchi; Hisato Iwai
21st World Congress on Intelligent Transport Systems, ITSWC 2014: Reinventing Transportation in Our Connected World, Intelligent Transport Systems (ITS), 2014, International conference proceedings - Secure communications using interference alignment in MIMO interference channels
Sasaki Satoshi; Shimizu Takayuki; Iwai Hisato; Sasaoka Hideichi
IEICE Communications Express, The Institute of Electronics, Information and Communication Engineers, 3(2) 50 - 54, 2014 - Improvement of transmission performance by variable precoding in MIMO transmission
Ozaki Tatsuya; Iwai Hisato; Sasaoka Hideichi
IEICE Communications Express, The Institute of Electronics, Information and Communication Engineers, 3(5) 168 - 174, 2014 - A Combined Iterative Interference Alignment Scheme for K-user MIMO Interference Channel
Feng Ju; Hideichi Sasaoka; Hisato Iwai
2014 IEEE INTERNATIONAL WORKSHOP ON ELECTROMAGNETICS (IEEE IWEM): APPLICATIONS AND STUDENT INNOVATION COMPETITION, IEEE, 221 - 222, 2014, International conference proceedings - Evaluation of MIMO Capacity Improvement by Active Propagation Control
Kenichiro Kamohara; Hisato Iwai; Hideichi Sasaoka
2014 IEEE INTERNATIONAL WORKSHOP ON ELECTROMAGNETICS (IEEE IWEM): APPLICATIONS AND STUDENT INNOVATION COMPETITION, IEEE, 28 - 29, 2014, International conference proceedings - Simplified Prediction of Propagation Loss over Non Line-of-Sight Intersections in V2V
Ippei Sugae; Toshihiro Tango; Hisato Iwai; Hideichi Sasaoka
2014 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP), IEEE, 217 - 218, 2014, International conference proceedings - A Received Signal Estimation Method at an Arbitrary Remote Location
Makoto Tanaka; Hisato Iwai; Hideichi Sasaoka
2014 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP), IEEE, 435 - 436, 2014, International conference proceedings - SIR Based Grouping Scheme of Interference Alignment
Nozomu Maeda; Hisato Iwai; Hideichi Sasaoka
2014 IEEE INTERNATIONAL WORKSHOP ON ELECTROMAGNETICS (IEEE IWEM): APPLICATIONS AND STUDENT INNOVATION COMPETITION, IEEE, 231 - 232, 2014, International conference proceedings - Secret Information Transmission Scheme Using MIMO System
Takuma Takimura; Hideichi Sasaoka; Hisato Iwai
2014 IEEE FIFTH INTERNATIONAL CONFERENCE ON COMMUNICATIONS AND ELECTRONICS (ICCE), IEEE, 554 - 559, 2014, International conference proceedings - Estimation of Received Signal at an Arbitrary Remote Location using MUSIC Method
Makoto Tanaka; Hisato Iwai; Hideichi Sasaoka
2014 IEEE INTERNATIONAL WORKSHOP ON ELECTROMAGNETICS (IEEE IWEM): APPLICATIONS AND STUDENT INNOVATION COMPETITION, IEEE, 201 - 202, 2014, International conference proceedings - Study of Channel Capacity Improvement by Open Loop Active Propagation Control
Kenichiro Kamohara; Hisato Iwai; Hideichi Sasaoka
2014 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP), IEEE, 113 - 114, 2014, International conference proceedings - Wireless Steganography using MIMO System
Keisuke Hokai; Hideichi Sasaoka; Hisato Iwai
2014 IEEE FIFTH INTERNATIONAL CONFERENCE ON COMMUNICATIONS AND ELECTRONICS (ICCE), IEEE, 560 - 565, 2014, International conference proceedings - Improvement of Position Estimation Accuracy Using Multiple Access Points in Terminal Position Estimation based on Position Fingerprint
Mayu Ohtani; Hisato Iwai; Hideichi Sasaoka
2014 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP), IEEE, 399 - 400, 2014, International conference proceedings - Performance Evaluation of Entity Authentication Scheme for Wireless Terminal Based on Location Identification Using Radio Propagation Characteristics
SASAOKA Hikeichi; OTANI Naoki; IWAI Hisato
The transactions of the Institute of Electronics, Information and Communication Engineers. B, The Institute of Electronics, Information and Communication Engineers, 96(8) 831 - 841, 01 Aug. 2013 - A Study on Improvement Technique of Transmission Performance in MIMO-MLD Multicast Communication Systems
Aoyama Yuki; Iwai Hisato; Sasaoka Hideichi
The science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 54(2) 119 - 127, Jul. 2013 - Evaluation of Terminal Position Estimation by Position Fingerprinting Technique using Array Antenna
Mayu Ohtani; Hisato Iwai; Hideichi Sasaoka
2013 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS (APMC 2013), IEEE, 392 - 394, 2013, International conference proceedings - Evaluation of Propagation Loss Difference between 5.8GHz and 700MHz Bands in V2V Communication Environments
Ryoji Yoshida; Hisato Iwai; Hideichi Sasaoka
2013 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS (APMC 2013), IEEE, 678 - 680, 2013, International conference proceedings - Energy Detection using Pseudo BER based SNR Estimation Scheme in Cognitive Radio
Tian Tian; Iwai Hisato; Sasaoka Hideichi
The science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 53(3) 159 - 166, Oct. 2012 - Group Secret Key Agreement Based on Radio Propagation Characteristics in Wireless Relaying Systems
SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
IEICE Transactions on Communications, The Institute of Electronics, Information and Communication Engineers, 95(7) 2266 - 2277, 01 Jul. 2012, Scientific journal - Secure communications using Interference Alignment in MIMO interference channels
Satoshi Sasaki; Takayuki Shimizu; Hisato Iwai; Hideichi Sasaoka
IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), 762 - 765, 2012, International conference proceedings - Performance monitoring based on pseudo error in cognitive radio networks
Tian Tian; Iwai Hisato; Sasakoka Hideichi
IEICE Communications Express, The Institute of Electronics, Information and Communication Engineers, 1(7) 252 - 256, 2012 - Pseudo BER based SNR Estimation for Energy Detection Scheme in Cognitive Radio
Tian Tian; Hisato Iwai; Hideichi Sasaoka
2012 IEEE 75TH VEHICULAR TECHNOLOGY CONFERENCE (VTC SPRING), IEEE, 1 - 5, 2012, International conference proceedings - Grouped Interference Alignment in Inter-Vehicle Communications
Takayuki Shimizu; Akihisa Yokoyama; Hisato Iwai
2012 IEEE VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL), IEEE, 1 - 5, 2012, International conference proceedings - Physical-Layer Secret Key Agreement in Two-Way Wireless Relaying Systems
Takayuki Shimizu; Hisato Iwai; Hideichi Sasaoka
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 6(3) 650 - 660, Sep. 2011, Scientific journal - A wireless steganography technique by embedding DS-SS signal in digital mobile communication systems
Kitano Takayasu; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 52(2) 127 - 134, Jul. 2011 - Joint multiuser detection and decoding in coded MC-CDMA system: a study on quasi-maximum-likelihood decoding using ordered statistics algorithm
Shibata Naoya; Shimizu Takayuki; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 52(1) 76 - 86, Apr. 2011 - Secret Information Transmission in MIMO Eigenbeam-Space Division Multiplexing
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
The IEICE transactions on communications B, The Institute of Electronics, Information and Communication Engineers, 94(2) 85 - 93, 01 Feb. 2011 - Multipath Delay Profile Models for ITS in 700MHz Band
Hisato Iwai; Satoshi Goto
2011 IEEE VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL), IEEE, 1 - 5, 2011, International conference proceedings - Experimental validation of wireless secret key agreement using array antennas
Takayuki Shimizu; Naoki Otani; Takayasu Kitano; Hisato Iwai; Hideichi Sasaoka
2011 30th URSI General Assembly and Scientific Symposium, URSIGASS 2011, 2011, International conference proceedings - Statistical analysis of interference avoidance based on multi-frequency RTS/CTS cognitive radio.
Tian Tian; Hisato Iwai; Hideichi Sasaoka
Proceedings of the 2011 6th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, CROWNCOM 2011, ICST / IEEE, 281 - 285, 2011, International conference proceedings - Secret key agreement techniques based on multipath propagation characteristics
Hideichi Sasaoka; Hisato Iwai
Securing Wireless Communications at the Physical Layer, Springer US, 261 - 280, 2010, In book - Estimation of fading characteristics based on multiple observed signals at remote locations
Inoue Keisuke; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 50(4) 183 - 192, Jan. 2010 - Secret Key Agreement Based on Radio Propagation Characteristics in Two-Way Relaying Systems
Takayuki Shimizu; Hisato Iwai; Hideichi Sasaoka; Arogyaswami Paulraj
2010 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE GLOBECOM 2010, IEEE, 1 - 6, 2010, International conference proceedings - Delay profile model in 700MHz band for road to vehicle and inter-vehicle communications
岩井 誠人
Proceedings of International Symposium on Antennas and Propagation 2010, 2010 - Secret key agreement based on propagation characteristics using array antennas
岩井 誠人
Proceedings of Thailand-Japan Topical Meeting on Antenna and Propagation, 2010 - Path loss and delay profile models for its in 700mhz band.
Hisato Iwai; Ippei Sugae
Proceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM, ACM, 69 - 70, 2010, International conference proceedings - Secret key agreement techniques based on radio propagation characteristics
岩井 誠人
Proceedings of Korea-Japan Technical Meeting on Antennas and Propagation, 2010 - Reliability-Based Sliced Error Correction in Secret Key Agreement from Fading Channel
Takayuki Shimizu; Hisato Iwai; Hideichi Sasaoka
2010 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC 2010), IEEE, 1 - 6, 2010, International conference proceedings - Secret key agreement scheme based on BER fluctuation in radio communication system
Kitano Takayasu; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 50(3) 141 - 148, Oct. 2009 - An adaptive transmission control scheme with multi-code multiplexing in MIMO-MC-CDMA system
Sadamatsu Hirokazu; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 50(3) 114 - 124, Oct. 2009 - Reducing Redundancy and Noise in Secret Key Agreement Based on Channel Characteristics in OFDM
YASUKAWA Shimpei; IWAI Hisato; SASAOKA Hideichi
The IEICE transactions on communications B, The Institute of Electronics, Information and Communication Engineers, 92(10) 1708 - 1711, 01 Oct. 2009 - Information Reconciliation Using Reliability in Secret Key Agreement Scheme with ESPAR Antenna
Takayuki Shimizu; Hisato Iwai; Hideichi Sasaoka
SECURITY AND PRIVACY IN MOBILE INFORMATION AND COMMUNICATION SYSTEMS, SPRINGER, 17 148 - 159, 2009, International conference proceedings - エスパアンテナを用いた秘密鍵共有方式における盗聴耐性の高い鍵生成法
岩井 誠人
電子情報通信学会論文誌B, J92-B(9) 1348 - 1361, 2009 - 複数アンテナからの干渉波送信制御を用いた秘密通信方式
岩井 誠人
電子情報通信学会論文誌B, J92-B(9) 1362 - 1372, 2009 - A Wireless Steganography Technique by Embedding Frequency Domain Spreading Signal in OFDM Mobile Communication Systems
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
The IEICE transactions on communications B, The Institute of Electronics, Information and Communication Engineers, 92(1) 2 - 10, 01 Jan. 2009 - An accurate error rate detection scheme by pseudo error monitoring
Ishizaki Shunsuke; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 49(2) 100 - 107, Jul. 2008 - Simple iterative decoding of product codes based on table-aided scheme
Shimizu Takayuki; Horai Kenya; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 49(1) 26 - 36, Apr. 2008 - A Secret Key Agreement Scheme with Multi-level Quantization and Parity Check Using Fluctuation of Radio Channel Property
Shimpei Yasukawa; Hisato Iwai; Hideichi Sasaoka
2008 IEEE INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY PROCEEDINGS, VOLS 1-6, IEEE, 732 - 736, 2008, International conference proceedings - Adaptive Key Generation in Secret Key Agreement Scheme based on the Channel Characteristics in OFDM
Shimpei Yasukawa; Hisato Iwai; Hideichi Sasaoka
2008 INTERNATIONAL SYMPOSIUM ON INFORMATION THEORY AND ITS APPLICATIONS, VOLS 1-3, IEEE, 1525 - 1530, 2008, International conference proceedings - Development of sensor networks for outdoor data collecting system
Kobayashi Yuma; Gotoh Shigeo; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 48(3) 195 - 202, Oct. 2007 - A study on error correction in secret key agreement scheme using ESPAR antenna
Shimizu Takayuki; Horai Kenya; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 48(3) 151 - 160, Oct. 2007, Research institution - Secret Information Transmission and Sharing Techniques Based on Radio Wave Propagation Characteristics
IWAI Hisato; SASAOKA Hideichi
The IEICE transactions on communications B, The Institute of Electronics, Information and Communication Engineers, 90(9) 770 - 783, 01 Sep. 2007 - Multi-signal detection technique using interference canceller in undersampling systems
Iwai Hisato; Yamasaki Kazuhiro; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Science and Engineering Research Institute of Doshisha University, 48(2) 117 - 126, Jul. 2007 - A Scheme of Secret Key Agreement Based on Received Signal Strength Variation by Antenna Switching in Land Mobile Radio
KITAURA Akito; IWAI Hisato; SASAOKA Hideichi
The IEICE transactions on communications B, The Institute of Electronics, Information and Communication Engineers, 90(3) 315 - 317, 01 Mar. 2007 - Comparative studies in key disagreement correction process on wireless key agreement system
Toru Hashimoto; Takashi Itoh; Masazumi Ueba; Hisato Iwai; Hideichi Sasaoka; Kazukuni Kobara; Hideki Imai
INFORMATION SECURITY APPLICATIONS, SPRINGER-VERLAG BERLIN, 4867 173 - 187, 2007, International conference proceedings - A private key agreement scheme based on fluctuations of BER in wireless communications
Takayasu Kitano; Akito Kitaura; Hisato Iwai; Hideichi Sasaoka
9TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY: TOWARD NETWORK INNOVATION BEYOND EVOLUTION, VOLS 1-3, IEEE, 1495 - +, 2007, International conference proceedings - Simplified authentication methods using secret key agreement scheme based on wireless propagation characteristics
Kitaura Akito; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Doshisha University, 47(4) 193 - 200, Jan. 2007 - A scheme of secret key agreement based on received signal strength variation by antenna switching in land mobile radio
Akito Kitaura; Hisato Iwai; Hideichi Sasaka
9TH INTERNATIONAL CONFERENCE ON ADVANCED COMMUNICATION TECHNOLOGY: TOWARD NETWORK INNOVATION BEYOND EVOLUTION, VOLS 1-3, IEEE, J90B(3) 1763 - +, 2007, International conference proceedings - MLSE multiuser detection in MC-CDMA systems using sinusoidal spreading codes
Hisato Iwai; Yusuke Miyamoto; Hideichi Sasaoka
2007 IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-9, IEEE, T1s36p01(x) 908 - 912, 2007, International conference proceedings - 無線伝搬路特性に基づく秘密鍵共有方式を用いた無線LAN簡易認証方式
岩井 誠人
同志社大学理工学研究報告, 47(4) 1 - 8, 2007 - Self-organizing location estimation method using received signal strength
Yasuhisa Takizawa; Peter Davis; Makoto Kawai; Hisato Iwai; Akira Yamaguchi; Sadao Obana
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E89B(10) 2687 - 2695, Oct. 2006, Scientific journal - Study on adaptive encoding and adaptive modulation for eigenmode transmission scheme in MIMO-OFDM System
Yamanaka Yusaku; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Doshisha University, 47(2) 79 - 86, Jul. 2006 - Direction and communication-aware directional MAC protocol in ad hoc networks using directional antenna
Tetsuro Ueda; Keizo Sugiyama; Hisato Iwai; Sadao Obana; Somprakash Bandyopadhyay
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, 2006, International conference proceedings - A private key sharing scheme based on multipath time delay in UWB systems
Akito Kitaura; Takenori Sumi; Toshihiro Tango; Hisato Iwai; Hideichi Sasaoka
2006 10TH INTERNATIONAL CONFERENCE ON COMMUNICATION TECHNOLOGY, VOLS 1 AND 2, PROCEEDINGS, IEEE, 989 - +, 2006, International conference proceedings - Self-Organizing Location Estimation Method using Ad-hoc Networks.
Yasuhisa Takizawa; Peter Davis; Makoto Kawai; Hisato Iwai; Akira Yamaguchi; Sadao Obana
Proceedings - IEEE International Conference on Mobile Data Management, IEEE Computer Society, 2006 53 - 53, 2006, International conference proceedings - A scheme of private key agreement based on delay profiles in UWB systems
Akito Kitaura; Takenori Sumi; Kei Tachibana; Hisato Iwai; Hideichi Sasaoka
2006 IEEE SARNOFF SYMPOSIUM, IEEE, S11(x) 301 - +, 2006, International conference proceedings - A study on OFDM adaptive modulation with channel quality estimation using pseudo error ratio
Watanabe Takashi; Iwai Hisato; Sasaoka Hideichi
The Science and engineering review of Doshisha University, Doshisha University, 47(3) 149 - 159, 2006 - A Scheme of secret key agreement based on delay profiles in UWB system
Takenori Sumi; Akito Kitaura; Kei Tachibana; Hisato Iwai; Hideichi Sasaoka
The science and engineering review of Doshisha University, Doshisha University, 46(4) 21 - 28, 2006 - A New Sampling Frequency Selection Scheme in Undersampling Systems
KUNISAWA Yoshio; SAHARA Naohiro; SHIRAI Hiroshi; IWAI Hisato
IEICE Trans. Communications, B, The Institute of Electronics, Information and Communication Engineers, 88(11) 4170 - 4175, 01 Nov. 2005, Scientific journal - B-21-37 Range detection procedure due to the phase deference of two frequencies at the node's communication distance
WATANABE Masahiro; IWAI Hisato; OBANA Sadao
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2005(2) 626 - 626, 07 Mar. 2005 - An autonomous terminal location estimation method using wireless ad-hoc network and its characteristics
46(12) 2903 - 2914, 2005 - A power aware routing strategy for ad hoc networks with directional antenna optimizing control traffic and power consumption
S Chatterjee; S Roy; S Bandyopadhyay; T Ueda; H Iwai; S Obana
DISTRIBUTED COMPUTING - IWDC 2005, PROCEEDINGS, SPRINGER-VERLAG BERLIN, 3741 275 - 280, 2005, Scientific journal - A path loss charactization over 2GHz by measurement in 800MHz and 5GHz bands
岩井 誠人
Proceedings of International Symposium on Antennas and Propagation (ISAP'05), FC3(3) 1109 - 1112, 2005 - Multihop mobile communications system using MC-CDMA in forward links
T Ohseki; N Fuke; O Maeshima; H Iwai; K Sugiyama; N Nohara
2005 IEEE Wireless Communications and Networking Conference, Vols 1-4, IEEE, 189 - 194, 2005, International conference proceedings - 無線アドホックネットワークによる自律的端末位置推定方式とその特性
岩井 誠人
情報通信学会論文誌, 46(12) 2903 - 2914, 2005 - 第4世代移動通信システムとソフトウェア無線
岩井 誠人
同志社工学会報, 47 8 - 15, 2005 - Evaluation of interference from UWB devices into FSS systems and new technical approach of satellite system using wideband spreading signals
FUKE Naoki; OHSEKI Takeo; IWAI Hisato; NOHARA Mitsuo; KAWAI Nobuyuki
Technical report of IEICE. SAT, The Institute of Electronics, Information and Communication Engineers, 104(351) 31 - 36, 21 Oct. 2004 - B-3-21 A Study on Satellite Communications using Ultra Wideband (UWB) Signals
Kunisawa Yoshio; Ishikawa Hiroyasu; Iwai Hisato; Shinonaga Hideyuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2004(1) 349 - 349, 08 Mar. 2004 - A Study on an Undersampling System for Multiband Receivers
KUNISAWA Yoshio; SAHARA Naohiro; IWAI Hisato; SHIRAI Hiroshi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 103(685) 1 - 6, 27 Feb. 2004 - Capacity enhancement of multihop cellular networks using peer-to-peer connection scheme
岩井 誠人
Proc. Global Mobile Congress, 96 , 2004 - Path loss dependence of delay spread at 5GHz in inhomogeneous suburban environments
岩井 誠人
Proc. International Symposium on Antennas and Propagation (ISAP'04), 725 - 728, 2004 - Path loss measurement in 5 GHz macro cellular systems and consideration of extending existing path loss prediction methods
K Yonezawa; T Maeyama; H Iwai; H Harada
2004 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE, VOLS 1-4, IEEE, 279 - 283, 2004, International conference proceedings - Expectations on software defined radio (SDR) in standardization fora on future mobile communication systems
F Watanabe; M Ohashi; H Nakamura; H Iwai
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E86B(12) 3366 - 3373, Dec. 2003, Scientific journal - Path Loss Measurement in 5GHz Macro-Cellular Environments
IWAI Hisato; YONEZAWA Kenya; MAEYAMA Toshiyuki; SHINONAGA Hideyuki; HARADA Hiroshi; FUJISE Masayuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2003(1) 46 - 46, 03 Mar. 2003 - Study on satellite communications using ultra wideband (UWB) signals
岩井 誠人
Proc. 2003 Joint Conference on Satellite Communications, 185 - 189, 2003 - 移動通信環境における電波伝搬モデルとフェージング対策技術
岩井 誠人
京都大学大学院情報学研究科博士論文, May 2001, Doctoral thesis - Enhancement of the ETP model: How to calculate BER due to ISI for wide-band digital transmission in Nakagami-Rice fading environments
Y Karasawa; H Iwai
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 49(6) 2113 - 2120, Nov. 2000, Scientific journal - Formulation of spatial correlation statistics in Nakagami-Rice fading environments
Y Karasawa; H Iwai
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 48(1) 12 - 18, Jan. 2000, Scientific journal - A study on receiver performance of a wideband CDMA testbed system for IMT-2000
Sumaru Niida; Toshinori Suzuki; Hisato Iwai; Takashi Inoue; Yoshio Takeuchi; Fumio Watanabe
IEEE 49th Vehicular Technology Conference (VTC 1999), IEEE, 2 1732 - 1736, 17 May 1999, International conference proceedings - Study on receiver performance of a wideband CDMA testbed system for IMT-2000
Sumaru Niida; Toshinori Suzuki; Hisato Iwai; Takashi Inoue; Yoshio Takeuchi; Fumio Watanabe
IEEE VTS 50th Vehicular Technology Conference, VTC 1999-Fall, 2 1732 - 1736, 1999, Scientific journal - Cycle slip in clock recovery on frequency-selective fading channels
Y Karasawa; T Kuroda; H Iwai
IEEE TRANSACTIONS ON COMMUNICATIONS, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 45(3) 376 - 383, Mar. 1997, Scientific journal - The equivalent transmission-path model - A tool for analyzing error floor characteristics due to intersymbol interference in Nakagami-Rice fading environments
Y Karasawa; T Kuroda; H Iwai
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 46(1) 194 - 202, Feb. 1997, Scientific journal - Analysis of cycle slip in clock recovery on frequency-selective Nakagami-Rice fading channels based on the equivalent transmission-path model
Y Karasawa; T Kuroda; H Iwai
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E79B(12) 1900 - 1910, Dec. 1996, Scientific journal - The theoretical foundation and applications of equivalent transmission-path model for assessing wideband digital transmission characteristics in Nakagami-Rice fading environments
H Iwai; Y Karasawa
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E79B(9) 1205 - 1214, Sep. 1996, Scientific journal - Investigation on wideband signal fluctuation characteristics in CDMA mobile radio using path and spatial diversity combination
Hisato Iwai; Fumio Watanabe; Toshio Mizuno
Annual International Conference on Universal Personal Communications - Record, IEEE, 292 - 296, 1995, International conference proceedings - MODELING OF SIGNAL ENVELOPE CORRELATION OF LINE-OF-SIGHT FADING WITH APPLICATIONS TO FREQUENCY CORRELATION-ANALYSIS
Y KARASAWA; H IWAI
IEEE TRANSACTIONS ON COMMUNICATIONS, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 42(6) 2201 - 2203, Jun. 1994, Scientific journal - AN INVESTIGATION OF SPACE-PATH HYBRID DIVERSITY SCHEME FOR BASE STATION RECEPTION IN CDMA MOBILE RADIO
H IWAI; T SHIOKAWA; Y KARASAWA
IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 12(5) 962 - 969, Jun. 1994, Scientific journal - CDMA移動通信における遠近問題の解析手法と対策技術
岩井 誠人; 唐沢 好男
国際通信の研究, KDDエンジニアリング・アンド・コンサルティング, (151) p5 - 14, Mar. 1994 - Wideband propagation model for the analysis of the effect of the multipath fading on the near-far problem in CDMA mobile radio systems
H. Iwai; Y. Karasawa
IEICE Trans. Commun., The Institute of Electronics, Information and Communication Engineers, 76(B) 103 - 112, May 1993, Scientific journal - A CDMA MOBILE RADIO BASE STATION ANTENNA SYSTEM ROBUST FOR MULTIPATH-FADING
H IWAI; Y KARASAWA
ISSSTA '92: IEEE SECOND INTERNATIONAL SYMPOSIUM ON SPREAD SPECTRUM TECHNIQUES AND APPLICATIONS, PROCEEDINGS, I E E E, 357 - 360, 1992, International conference proceedings - A FADING REDUCTION TECHNIQUE USING INTERLEAVE-AIDED OPEN LOOP SPACE DIVERSITY FOR DIGITAL MARITIME-SATELLITE COMMUNICATIONS
H IWAI; M YASUNAGA; Y KARASAWA
IEICE TRANSACTIONS ON COMMUNICATIONS ELECTRONICS INFORMATION AND SYSTEMS, IEICE-INST ELECTRON INFO COMMUN ENG, 74(10) 3286 - 3294, Oct. 1991, Scientific journal - 放送衛星電波受信強度測定システムによる降雨特性の研究
岩井 誠人
京都大学大学院工学研究科修士論文, Mar. 1989, Master thesis
MISC
- Measurement of Received Polarization Characteristics by a Car-Mounted Antenna in Cellular Communication Environments
Seiryu Okamoto; Yuki Kawai; Kei HIjirikawa; Hisato Iwai; Shinsuke Ibi
IEICE Tech. Rep, 119(418) 81 - 84, 21 Feb. 2020 - Analysis of Influence of Multipath Waves on a Position Detection Method based on DOA Estimation in an Indoor Environment
Takuma Inui; Hisato Iwai; Shinsuke Ibi
IEICE Tech. Rep, 119(418) 47 - 51, 21 Feb. 2020 - Effect of Spatial Expansion on Radio Wave Propagation Characteristics in Large-scale Indoor Space
Yuto Nishitsuji; Shigeo Gotoh; Hisato Iwai; Shinsuke Ibi
IEICE Tech. Rep, 119(379) 129 - 134, 24 Jan. 2020 - A Study on Noise Reduction in Physical Layer Secret Key Agreement using Multi-Antenna
Tomoyuki Higashide; Shinsuke Ibi; Hisato Iwai; Hideichi Sasaoka
IEICE Tech. Rep, 119(378) 111 - 116, 23 Jan. 2020 - A Study on Computational Reduction of PAPR Suppression Using Vector Perturbation in OFDM
Yasunao Sugimoto; Shinsuke Ibi; Hisato Iwai; Hideichi Sasaoka
IEICE Tech. Rep, 119(378) 40 - 50, 23 Jan. 2020 - A Study on Channel Estimation by Using Independent Component Analysis in Large-scale MIMO Systems
Taichi Kasai; Shinsuke Ibi; Hisato Iwai; Hideichi Sasaoka
IEICE Tech. Rep, 119(378) 7 - 11, 23 Jan. 2020 - Evaluation of Reduction Effect of Influence of Reflected Waves on Measurement of Human Body Shadowing Loss by Average Processing
Kenjiro Kubo; Hisato Iwai; Hideichi Sasaoka; Shinsuke Ibi
IEICE Tech. Rep, 119(228) 3 - 4, 17 Oct. 2019 - A Simplified Estimation Method of Propagation Loss considering Blocking Vehicles in V2V Communication Environments
Kentaro Yamane; Hisato Iwai; Hideichi Sasaoka; Shinsuke Ibi
IEICE Tech. Rep, 119(228) 1 - 2, 17 Oct. 2019 - Reduction of Influence of Reflected Waves on Measurement of Human Body Shadowing Loss by Average Processing
Kenjiro Kubo; Hisato Iwai; Hideichi Sasaoka; Shinsuke Ibi
IEICE Tech. Rep, 119(168) 12 - 22, 21 Aug. 2019 - Prediction formula of propagation loss in an urban cellular environment based on physical considerations of dominant propagation paths
Kenjiro Kubo; Hisato Iwai; Hideichi Sasaoka; Shinsuke Ibi
IEICE Tech. Rep, 119(120) 123 - 128, 19 Jul. 2019 - Prediction Formula of Propagation Loss in Kokura Urban Cellular Environment
川崎 翔平; 杉本 智哉; 岩井 誠人; 笹岡 秀一; 衣斐 信介
Record of Joint Conference of Electrical and Electronics Engineers in Kyushu, Committee of Joint Conference of Electrical, Electronics and Information Engineers in Kyushu, 2019(0) 398 - 399, 2019 - 移動体の電波強度を利用した歩行者の位置精度向上手法の評価
西牧 佑哉; 岩井 誠人; 佐藤 健哉
マルチメディア，分散協調とモバイルシンポジウム2018論文集, (2018) 603 - 609, 27 Jun. 2018 - An OFDM system using nonlinear signal decomposition based on radio propagation characteristics and multiple antenna transmission
竹岡 達成; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(456) 87 - 92, 28 Feb. 2018 - Evaluation of Eavesdropping Resistance in Secret Information Transmission Scheme Using Signal Decomposition and Spatial Vector Composition
辻 和輝; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(394) 177 - 182, 22 Jan. 2018 - Trial of Propagation Model Contest
今井 哲朗; 岩井 誠人; 吉敷 由起子; チン ギルバート シー
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(382) 53 - 55, 18 Jan. 2018 - Modeling of Propagation Loss of Ray-Tracing Data in an Urban Cellular Environment Based on Physical Considerations of Dominant Arriving Waves
杉本 智哉; 岩井 誠人; 笹岡 秀一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(382) 57 - 62, 18 Jan. 2018 - Dependence on Antenna Height of Human Body Shadowing Loss in an Indoor Environment
伊藤 優希; 岩井 誠人; 笹岡 秀一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(181) 19 - 22, 24 Aug. 2017 - A Study on OFDM Transmission using Multi Antenna Transmission based on Vector Decomposition of Complex Modulation Signal and Spatial Vector Composition Reception
竹岡 達成; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(132) 31 - 36, 19 Jul. 2017 - A Study on Sampling Method of Independent Time Series and Evaluation of Secret Key Capacity in Secret key Agreement Based on Fading Variation
黒柳 啓太; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(132) 49 - 54, 19 Jul. 2017 - Performance Evaluation of Blind MIMO System Using Independent Component Analysis and Its Application to Secret Information Transmission
桐野 悟至; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(132) 209 - 214, 19 Jul. 2017 - Evaluation of Human Body Shadowing Loss in an Indoor Environment
伊藤 優希; 吉田 開; 岩井 誠人; 笹岡 秀一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 117(31) 85 - 90, 18 May 2017 - Analysis of Car-Cabin Propagation Characteristics by FDTD Method using a Vehicle 3D Model
森田 淳樹; 岩井 誠人; 笹岡 秀一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(397) 33 - 38, 19 Jan. 2017 - 歴代委員長に聞く:―B-plusの10年史―
岩井 誠人; 酒井 善則; 山尾 泰; 山崎 克之; 大橋 正良; 高橋 応明
電子情報通信学会 通信ソサイエティマガジン, 一般社団法人 電子情報通信学会, 10(4) 240 - 247, 2017 - Estimation of Propagation Properties at a Remote Location in a 3-Dimensional Space by a Planar Array Antenna
阿部 俊輔; 岩井 誠人; 笹岡 秀一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(317) 59 - 64, 24 Nov. 2016 - Secret Key Transmission Scheme using Products of Secret Signals and pseudo Gaussian Signals in MIMO system
市川 力; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(257) 53 - 58, 20 Oct. 2016 - Wireless Transmission Scheme using Signal Decomposition and Spatial Vector Composition Based on Radio Propagation Characteristics
辻 和輝; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(257) 59 - 64, 20 Oct. 2016 - Study on Secret Information Sharing with Propagation Coefficient and Public Transmission of Antenna Weight
樋口 拓己; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 116(257) 65 - 70, 20 Oct. 2016 - Prediction Formula of Propagation Loss in a Dense Human Body Shadowing Environment in 5GHz Wireless Communications
保海 佳佑; 岩井 誠人; 新保 宏之; 定 知生; 渡辺 伸吾
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(506) 37 - 42, 10 Mar. 2016 - B-1-5 Performance Evaluation of a Propagation Control Device for Active Propagation Control
Araki Ryo; Kamohara Kenichiro; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 5 - 5, 01 Mar. 2016 - B-1-22 Prediction Formula of Propagation Loss for 5GHz-band in a Crowded Crosswalk
HOKAII Keisuke; IWAI Hisato; SHINBO Hiroyuki; SADA Tomoki; WATANABE Shingo
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 22 - 22, 01 Mar. 2016 - B-1-34 Improvement of Correlation Characteristics of Delay Profile Estimation using Wireless LAN Signal by Carrier Frequency Offset Compensation
Morita Atsuki; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 34 - 34, 01 Mar. 2016 - B-1-189 Estimation of Received Signal at an Arbitrary Remote Location based on Estimation of Incoming Waves by Compressed Sensing
Sugimoto Tomoya; Tanaka Makoto; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 189 - 189, 01 Mar. 2016 - B-1-190 Evaluation of Estimation Performance of a Received Signal Estimation Method by Ray Tracing Analysis
Ma Jian; Tanaka Makoto; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 190 - 190, 01 Mar. 2016 - B-1-193 Extension of a Received Signal Estimation Method at a Remote Location using MUSIC Method to a 3-Dimensional Space
ABE Shunsuke; TANAKA Makoto; IWAI Hisato; SASAOKA Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 193 - 193, 01 Mar. 2016 - B-5-93 Blind Signal Separation Using Receiver Antennas by Independent Components Analysis
Norimatsu Yuki; Sasaoka Hideichi; Iwai Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 486 - 486, 01 Mar. 2016 - B-5-162 Wireless Steganography using Phase Variation of a Carrier
TSUJI Kazuki; SASAOKA Hideichi; IWAI Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 555 - 555, 01 Mar. 2016 - B-17-3 Evaluation of Reduction of Out-of-Band Emission Power and Transmission Performance by a Windowing Method in GFDM Transmission
Komizu Yasuhiro; Iwai Hisato; Shinbo Hiroyuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2016(1) 606 - 606, 01 Mar. 2016 - Wireless Steganography using Nonlinear Amplifier in OFDM system
保海 佳佑; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(394) 261 - 266, 18 Jan. 2016 - Secret Key Agreement Scheme Using Random Number Transmission over a Public Channel and Using Partial Sequence Selection Based on Radio Propagation Characteristics
松本 達矢; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(288) 13 - 18, 04 Nov. 2015 - Secret Key Agreement Scheme with Measuring Radio Wave Propagation Characteristics
樋口 拓己; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(288) 19 - 24, 04 Nov. 2015 - A Study on Improvement of eavesdropping tolerance in chaos communication
中濱 凌大; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(288) 25 - 30, 04 Nov. 2015 - Evaluation of Estimation Accuracy of a Terminal Position Estimation Method based on Position Fingerprint using Directional Antennas in an Indoor Environment
山田 遼; 岩井 誠人; 笹岡 秀一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(286) 185 - 188, 04 Nov. 2015 - An Analysis of Generation Method of OFDM Modulation Wave Using Spatial Composite of Quasi-constant Envelope Modulation Wave
溝口 修造; 笹岡 秀一; 岩井 誠人
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(288) 275 - 280, 04 Nov. 2015 - B-1-14 Extension of a Path Loss Estimation Formula in Non Line-of-Sight V2V communications Environment
Sugae Ippei; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2015(1) 14 - 14, 25 Aug. 2015 - B-1-120 Extension of Pre-Measurement Interval Required for Indoor Position Estimation Based on Radio Fingerprint by Directional Antennas
Yamada Ryo; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2015(1) 120 - 120, 25 Aug. 2015 - B-5-120 Secret Key Agreement Using Weight Control Based on Radio Wave Propagation Characteristics
Higuchi Takumi; Sasaoka Hideichi; Iwai Hisato
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2015(1) 382 - 382, 25 Aug. 2015 - An Accuracy Evaluation of Path Loss Models over Non Line-of-Sight Intersections in V2V communications
菅江 一平; 岩井 誠人; 笹岡 秀一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(113) 179 - 184, 24 Jun. 2015 - An Accuracy Improvement of a Path Loss Model for Over-the-corner Vehicle to Vehicle communications (V2V)
菅江 一平; 岩井 誠人; 笹岡 秀一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(40) 7 - 12, 21 May 2015 - Effect on Propagation Loss by Variations of Transmitter and Receiver Positions in Road Width Direction in Inter-Vehicle Communication Environments
小澤 和生; 岩井 誠人; 笹岡 秀一
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 電子情報通信学会, 115(12) 89 - 94, 22 Apr. 2015 - A Calculation Formula of Propagation Path Loss for Vehicle to Vehicle Communications (V2V) in a Crank Road
HOSOKAWA Yuki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 114(522) 49 - 54, 19 Mar. 2015 - Performance Evaluation of Active Propagation Control in a Three-Dimensional Indoor Environment
KAMOHARA Kenichiro; IWAI Hisato; SASAOKA Hideichi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 114(522) 67 - 72, 19 Mar. 2015 - Transmission and Eavesdropping Characteristic in Chaos Phase Modulation
NAKAHAMA Ryota; SASAOKA Hideichi; IWAI Hisato
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 114(490) 333 - 338, 04 Mar. 2015 - Secret Key Agreement Scheme Based on Pre-measurement of Radio Wave Propagation Characteristics
HIGUCHI Takumi; SASAOKA Hideichi; IWAI Hisato
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 114(490) 339 - 344, 04 Mar. 2015 - Special Section on Position Papers Exploring Innovative Intelligence and Technologies in Communications FOREWORD
Hisato Iwai
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E98B(3) 387 - 387, Mar. 2015, Others - B-1-182 Eavesdropping Characteristics of Secret Key Agreement Scheme by a Received Signal Estimation Method of an Arbitrary Remote Location
Ma Jian; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 182 - 182, 24 Feb. 2015 - B-1-183 Estimation of Line of Sight by Cross Polarization Characteristic
Morita Atsuki; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 183 - 183, 24 Feb. 2015 - B-1-192 Extension of Required Measurement Interval of Location Fingerprint by Directional Antennas in Terminal Position Estimation based on Location Fingerprint
Yamada Ryo; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 192 - 192, 24 Feb. 2015 - B-5-170 Generation Method of Stego Key for Wireless Steganography using MIMO
Hokai Keisuke; Sasaoka Hideichi; Iwai Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 525 - 525, 24 Feb. 2015 - B-5-171 The Secret Key Agreement Based on Pre-measurement of Radio Wave Propagation Characteristics
Higuchi Takumi; Sasaoka Hideichi; Iwai Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 526 - 526, 24 Feb. 2015 - B-5-172 Secret Key Capacity of Key Agreement Based on Correlative Information Using Multiple Antenns
Iwamoto Naoki; Sasaoka Hideichi; Iwai Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 527 - 527, 24 Feb. 2015 - B-5-173 Eavesdropping Characteristic with Maximum Likelihood Estimation in Chaos Commmication
Nakahama Ryota; Sasaoka Hideichi; Iwai Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 528 - 528, 24 Feb. 2015 - B-17-21 Performance Evaluation of Wideband Non-Contiguous OFDM Technology by Field Experiment
Komizu Yasuhiro; Takakusaki Keiji; Kosaka Kazuhiro; Iwai Hisato; Shinbo Hiroyuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 568 - 568, 24 Feb. 2015 - B-17-22 Degradation Analysis for Transmission Performance of Wideband Non-Contiguous OFDM Technology in Field Experiment
Takakusaki Keiji; Komizu Yasuhiro; Kosaka Kazuhiro; Iwai Hisato; Shinbo Hiroyuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 569 - 569, 24 Feb. 2015 - B-17-23 Parameter Optimization of Constractic Time Windowing in Wideband Non-Contiguous OFDM
Kadota Kosuke; Takakusaki Keiji; Kanno Issei; Iwai Hisato; Shinbo Hiroyuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2015(1) 570 - 570, 24 Feb. 2015 - A Study on Estimation Method of Communication Area using Cooperated Monitoring of Communication Quality in Cognitive Radio
MURAYAMA Tatsuya; SASAOKA Hideichi; IWAI Hisato
IEICE technical report. SR, Smart radio, The Institute of Electronics, Information and Communication Engineers, 114(435) 35 - 40, 29 Jan. 2015 - FOREWORD
IWAI Hisato
IEICE Transactions on Communications, The Institute of Electronics, Information and Communication Engineers, 98(1) 134 - 134, 2015 - FOREWORD
IWAI Hisato
IEICE Transactions on Communications, The Institute of Electronics, Information and Communication Engineers, 98(3) 387 - 387, 2015 - Special Section on Position Papers Exploring Innovative Intelligence and Technologies in Communications FOREWORD
Hisato Iwai
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E98B(1) 134 - 134, Jan. 2015, Others - B-1-16 Study of Channel Capacity Improvement by Active Propagation Control
Kamohara Kenichiro; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 16 - 16, 09 Sep. 2014 - B-1-174 Evaluation of Estimation Performance of a Received Signal Estimation Method at an Arbitrary Remote Location
Tanaka Makoto; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 174 - 174, 09 Sep. 2014 - B-1-178 Improvement of Position Estimation Accuracy using Multiple Access Points in Terminal Position Estimation based on Position Fingerprint
OHTANI Mayu; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 178 - 178, 09 Sep. 2014 - B-5-8 Analysis of a Combined Iterative Interference Alignment Scheme for MIMO System
JU Feng; SASAOKA Hideichi; IWAI Hisato
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 279 - 279, 09 Sep. 2014 - B-5-23 An Analysis on Communication Area of Cognitive Radio by Using Pseudo Error Monitoring
Murayama Tatsuya; Sasaoka Hideichi; Iwai Hisato
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 294 - 294, 09 Sep. 2014 - B-5-43 An analysis of spatial composite OFDM modulation method using a quasi-constant envelope modulation
Mizoguchi Shuzo; Sasaoka Hideichi; Iwai Hisato
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 314 - 314, 09 Sep. 2014 - B-5-91 Secret Information Transmission Scheme with Gaussian Noise in MIMO System
Takimura Takuma; Sasaoka Hideichi; Iwai Hisato
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 362 - 362, 09 Sep. 2014 - B-5-92 Steganalysis for Wireless Steganography in MIMO System
Hokai Keisuke; Sasaoka Hideichi; Iwai Hisato
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 363 - 363, 09 Sep. 2014 - B-5-93 Secret Key Capacity of Key Agreement Based on the Rayleigh Distribution Signal in Radio Communication
Iwamoto Naoki; Sasaoka Hideichi; Iwai Hisato
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 364 - 364, 09 Sep. 2014 - B-17-5 Introduction of Contrastic Time Windowing method to Wideband Non-Contiguous OFDM System
Takakusaki Keiji; Kadota Kosuke; Kanno Issei; Iwai Hisato; Shinbo Hiroyuki
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 395 - 395, 09 Sep. 2014 - B-17-6 Relationship between out band power suppression and performance degradation with Constractic Time Windowing
Kadota Kosuke; Takakusaki Keiji; Kanno Issei; Iwai Hisato; Shinbo Hiroyuki
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2014(1) 396 - 396, 09 Sep. 2014 - Wireless Steganography in MIMO System
Hokai Keisuke; Sasaoka Hideichi; Iwai Hisato
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 114(86) 207 - 212, 17 Jun. 2014 - Secret Information Transmission Scheme in MIMO System
TAKIMURA Takuma; SASAOKA Hideichi; IWAI Hisato
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 114(86) 213 - 218, 17 Jun. 2014 - The Secret Key Capacity of Secret Key Agreement Scheme Using Multiple-Antenna
IWAMOTO Naoki; SASAOKA Hideichi; IWAI Hisato
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 114(86) 219 - 224, 17 Jun. 2014 - IEICE Transactions on Communications: Editor's Message
Hisato Iwai
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E97B(6) 1112 - 1112, Jun. 2014, Others - Evaluation of Measurement Interval of Location Fingerprint in Location Estimation Method Based on Propagation Characteristics
OHTANI Mayu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 114(62) 63 - 66, 29 May 2014 - Estimation of Received Signal at an Arbitrary Remote Location using MUSIC Method
TANAKA Makoto; IWAI Hisato; SASAOKA Hideichi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 114(5) 83 - 88, 17 Apr. 2014 - B-1-14 Evaluation of Dependency of Receiver Position in Road Width Direction in Inter-Vehicle Communication Environments
Ozawa Kazuo; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2014(1) 14 - 14, 04 Mar. 2014 - B-1-35 Analysis of Indoor Propagation Characteristics for Active Propagation Control
Kamohara Kenichiro; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2014(1) 35 - 35, 04 Mar. 2014 - B-1-222 Estimation of Propagation Characteristics at Remote Location using MUSIC Method
Tanaka Makoto; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2014(1) 222 - 222, 04 Mar. 2014 - B-5-30 A Combined Iterative Interference Alignment Scheme for MIMO System
JU Feng; SASAOKA Hideichi; IWAI Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2014(1) 425 - 425, 04 Mar. 2014 - B-5-111 Study of the Secret Key Capacity of Secret Key Agreement Scheme Using Multiple Antenna
Iwamoto Naoki; Sasaoka Hideichi; Iwai Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2014(1) 506 - 506, 04 Mar. 2014 - B-5-112 Examination of Secret Information Transmission Scheme Using Plurality Antenna
Takimura Takuma; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2014(1) 507 - 507, 04 Mar. 2014 - B-5-113 Evaluation of Wireless Steganography using Multiple Antennas
Hokai Keisuke; Sasaoka Hideichi; Iwai Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2014(1) 508 - 508, 04 Mar. 2014 - Scheme of interference cancelling for an external interference signal using interference alignment in MIMO systems
SASAKI Satoshi; SASAOKA Hideichi; IWAI Hisato
IEICE technical report. Signal processing, The Institute of Electronics, Information and Communication Engineers, 113(385) 293 - 298, 23 Jan. 2014 - Improvement of Receiving Performance by Active Propagation Control in Wireless Communications
IWAI Hisato; KAMOHARA Kenichiro; SASAOKA Hideichi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 113(384) 163 - 168, 22 Jan. 2014 - Improvement of Transmission Performance by Variable Precoding in MIMO Transmission
OZAKI Tatsuya; IWAI Hisato; SASAOKA Hideichi
IEICE technical report. Signal processing, The Institute of Electronics, Information and Communication Engineers, 113(385) 47 - 51, 16 Jan. 2014 - MESSAGE
IWAI Hisato
IEICE Transactions on Communications, The Institute of Electronics, Information and Communication Engineers, 97(6) 1112 - 1112, 2014 - Evaluation of degradation of the bit error rate characteristic by the clock interference in wireless terminal
OSAKI Kouhei; SASAOKA Hideichi; IWAI Hisato
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 113(361) 95 - 100, 18 Dec. 2013 - Wireless Steganography using Spectrum Spreading Technique
TAKAI Akihito; SASAOKA Hideichi; IWAI Hisato
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 113(361) 195 - 200, 18 Dec. 2013 - Bit error rate characteristic of OFDM scheme for various interference wave
Osaki Kouhei; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2013(1) 441 - 441, 03 Sep. 2013 - ワイヤレスシステムを支える技術を融合するアンテナ・伝搬技術論文特集の発行にあたって(<特集>ワイヤレスシステムを支える技術を融合するアンテナ・伝搬技術論文)
岩井 誠人
電子情報通信学会論文誌. B, 通信, 一般社団法人電子情報通信学会, 96(9) 879 - 880, 01 Sep. 2013 - Study on Spatial Modulation in Multipath Environment
MAEDA Nozomu; SASAOKA Hideichi; HISATO Iwai
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 113(130) 1 - 6, 17 Jul. 2013 - Propagation Models for Simulation Scenario of ITS V2V Communications
YOSHIDA Ryoji; IWAI Hisato; SASAOKA Hideichi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 113(79) 13 - 18, 13 Jun. 2013 - Evaluation of terminal position estimation by location fingerprinting technique using array antenna
OHTANI Mayu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 113(3) 31 - 36, 18 Apr. 2013 - B-1-203 Terminal Position Detection based on Signal Level Variation using Array Antennas
大谷 真由; 岩井 誠人; 笹岡 秀一
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2013(1) 203 - 203, 05 Mar. 2013 - BK-2-1 論文の書き方講座(BK-2.論文の書き方講座,ソサイエティ特別企画,ソサイエティ企画)
高橋 応明; 岩井 誠人; 上原 秀幸
電子情報通信学会総合大会講演論文集, 一般社団法人電子情報通信学会, 2013(1) "SS - 1"-"SS-2", 05 Mar. 2013 - Evaluation of Propagation Loss Difference between the 5.8GHz and 700MHz bands in V2V Environments
YOSHIDA Ryoji; IWAI Hisato; SASAOKA Hideichi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 112(384) 87 - 92, 23 Jan. 2013 - 日本発・世界に広がる二次元コード：QRコード
原 昌宏; 岩井 誠人; 佐波 孝彦; 菊間 信良
電子情報通信学会 通信ソサイエティマガジン, 一般社団法人 電子情報通信学会, 7(2) 126 - 132, 2013 - B-8-7 Study on Precoding for MIMO-MLD Transmission in Broadcast Communication
Aoyama Yuki; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2012(2) 261 - 261, 06 Mar. 2012 - B-5-6 Secre Commnications Using Interference Alignment in MIMO Interference Channels
Sasaki Satoshi; Shimizu Takayuki; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2012(1) 405 - 405, 06 Mar. 2012 - BK-1 Lectures on How to Write Papers
Takahashi Masaharu; Iwai Hisato; Uehara Hideyuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2012(2) "SS - 1"-"SS-2", 06 Mar. 2012 - Application of Interference Alignment to Inter-Vehicle Communications with Simultaneous Multi-User Transmission and Its Performance Evaluation
SHIMIZU Takayuki; YOKOYAMA Akihisa; IWAI Hisato
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 111(451) 253 - 258, 29 Feb. 2012 - Evaluation of Fundamental Characteristics of Wireless Terminal Authentication Scheme Based on Radio Propagation Characteristics
OTANI Naoki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 111(429) 13 - 18, 02 Feb. 2012 - Evaluation of Fundamental Characteristics of Wireless Terminal Authentication Scheme Based on Radio Propagation Characteristics
尾谷 尚宣; 岩井 誠人; 笹岡 秀一
映像情報メディア学会技術報告, 映像情報メディア学会, 36(6) 13 - 18, Feb. 2012 - Experimental Evaluation of Wireless Terminal Authentication Scheme Based on Radio Propagation Characteristics
OTANI Naoki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 111(231) 19 - 24, 06 Oct. 2011 - B-5-89 Secret Key Agreement Based on Radio Propagation Characteristics Using Cooperative Terminal
UMEYAMA Tomomichi; SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2011(1) 468 - 468, 30 Aug. 2011 - Evaluation of Tolerance of Eavesdropping of Wireless Secret Key Agreement Using Array Antennas by FDTD Method
NISHIDA Akira; SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(128) 47 - 50, 06 Jul. 2011 - Channel Capacity of Interference Alignment in MIMO Interference Channels with Channel Estimation Error and Channel Time-Variation
SHIMIZU Takayuki; YOKOYAMA Akihisa; IWAI Hisato
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(94) 55 - 60, 16 Jun. 2011 - Radio Propagation Models for Inter-Vehicle Communications in 700MHz Band
IWAI Hisato
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(94) 91 - 96, 16 Jun. 2011 - Propagation Characteristics in Road to Vehicle and Vehicle to Vehicle Communications in 5.8GHz Band
IWAI Hisato; IBA Hayato; GOTOH Satoshi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(63) 25 - 30, 19 May 2011 - Secret Key Agreement for Multiple Terminals Based on Radio Propagation Characteristics in Wireless Relaying Systems
SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 111(12) 35 - 40, 14 Apr. 2011 - B-5-97 A Study on Selective Reception of MLD and Spatial Filtering According to Channel State in MIMO Systems
Okada Tatsuya; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2011(1) 483 - 483, 28 Feb. 2011 - B-5-102 A Study on Feedback Method of Transmission Weight Information in MIMO E-SDM
UTSUNOMIYA Michihito; KITANO Takayasu; TANAKA Satoshi; SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2011(1) 488 - 488, 28 Feb. 2011 - A Secret Key Agreement Scheme with Interference Avoidance for MIMO Systems
KITAURA Akito; KANI Yuki; IWAI Hisato; SHIBATA Tatsuo; OBANA Sadao; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(440) 245 - 250, 24 Feb. 2011 - Secret Information Transmission Scheme Using Information Dispersal in MIMO System
TANAKA Satoshi; SHIMIZU Takayuki; KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(433) 195 - 200, 23 Feb. 2011 - Development of Secret Key Agreement and Radio Source Localization Experimental System Based on Radio Propagation Characteristics Using Array Antennas
OTANI Naoki; KITANO Takayasu; SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(371) 31 - 36, 13 Jan. 2011 - Propagation Analysis of Interference Avoidance based on Multi-Frequency RTS/CTS Cognitive Radio
TIAN Tian; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(371) 91 - 96, 13 Jan. 2011 - BS-2-8 Experimental Evaluation of Wireless Terminal Authentication Scheme Based on Radio Propagation Characteristics Using Array Antennas
Otani Naoki; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, "S - 21"-"S-22", 2011 - Guest Editorial Special Issue on Using the Physical Layer for Securing the Next Generation of Communication Systems.
Wade Trappe; H. Vincent Poor; Hisato Iwai; Aylin Yener; Paul R. Prucnal; João Barros
IEEE Trans. Inf. Forensics Secur., IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 6(3-1) 521 - 522, 2011, Others - A Path Loss Model for Over-the-Corner Vehicle to Vehicle Communications : An improvement of empirical path loss model based on theoretical analysis
SUGAE Ippei; IWAI Hisato
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(267) 25 - 30, 03 Nov. 2010 - B-20-8 Location estimation method by SOM algorithm based on distance and angle information
KOJIMA Yuya; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2010(2) 411 - 411, 31 Aug. 2010 - Joint Multiuser Detection and Decoding in Coded MC-CDMA System : A Study on Quasi-Maximum-Likelihood Decoding using Ordered Statistics Algorithm
SHIBATA Naoya; SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(175) 123 - 128, 19 Aug. 2010 - Secret Information Transmission in MIMO Eigenbeam-Space Division Multiplexing
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(77) 85 - 90, 10 Jun. 2010 - Preliminary Analysis of Terminal Authentication Scheme Based on Radio Propagation
OTANI Naoki; KAWAMURA Shunichi; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(77) 145 - 150, 10 Jun. 2010 - Path Loss and Delay Profile Models for ITS in 700MHz Band
IWAI Hisato; SUGAE Ippei
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 110(1) 35 - 40, 02 Apr. 2010 - A Study of Accuracy Improvement of Location Estimation Method Using SOM Algorithm
TAKAYA YUKI; IWAI HISATO; TAKIZAWA YASUHISA; SASAOKA HIDEITI
情報処理学会研究報告. CSEC, [コンピュータセキュリティ], 情報処理学会, 48(33) g1 - g8, 04 Mar. 2010 - B-5-91 Preliminary Analysis of Mutual Authentication System Based on Radio Propagation
Otani Naoki; Kawamura Shunichi; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2010(1) 523 - 523, 02 Mar. 2010 - B-5-92 A Study on Secret Information Transmission using MIMO E-SDM
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2010(1) 524 - 524, 02 Mar. 2010 - B-5-93 Improvement of Security in Secret Key Agreement Scheme Using ESPAR Antenna by Linear Combination of Complex Signals
KAWAMURA Shunichi; SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2010(1) 525 - 525, 02 Mar. 2010 - B-5-113 A Study on Performance of Multi-Site Cooperative MIMO Transmission considering Transmission Time Difference between Base Stations
Yamamoto Toshiaki; Iwai Hisato; Ueda Tetsuro; Obana Sadao
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2010(1) 545 - 545, 02 Mar. 2010 - A-17-9 Evaluation of Transmission Characteristic of Inter-Vehicle Communications at 700MHz Band based on Measured Delay Profile
GOTOH Satoshi; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 155 - 155, 2010 - B-5-129 A Study on Signal Hiding in Secret Communication System Using Multi-Antenna Transmission
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2009(1) 479 - 479, 01 Sep. 2009 - A Study on Signal Hiding in Secret Communication System Using Multi-Antenna Transmission
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 109(183) 125 - 130, 27 Aug. 2009 - Improvement of Tolerance for Eavesdropping in Wireless Key Agreement Scheme using ESPAR Antenna based on Interference Transmission
ONISHI Masahiro; KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 109(117) 59 - 64, 01 Jul. 2009 - Position Dependence of Key Capacity in Secrete Key Agreement Scheme Using ESPAR Antenna
KAWAMURA Shunichi; SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 109(105) 37 - 42, 18 Jun. 2009 - Modeling and Verification of Secret Key Agreement System Using Variable Directional Antenna
MAEDA Masahiko; UMABA Takayuki; HARADA Yosuke; UEBA Masazumi; AIKAWA Satoru; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 109(77) 37 - 42, 04 Jun. 2009 - BP-1-4 Secret Information obtainable from Fading Channels
IWAI Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2009(1) "SS - 15"-"SS-16", 04 Mar. 2009 - B-5-128 Research and Development of Multi-Gigabit Wireless LAN System : The Adequate Parameter Selection Method of Key Agreement System
Umaba Takayuki; Harada Yosuke; Ueba Masazumi; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2009(1) 561 - 561, 04 Mar. 2009 - Practical Methodology of Secret Key Agreement System Using Variable Directional Antenna
UMABA Takayuki; MAEDA Masahiko; HARADA Yosuke; UEBA Masazumi; AIKAWA Satoru; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(474) 79 - 84, 02 Mar. 2009 - A study on Secret Key Agreement Scheme in Multi-Antenna System Based on Radio Propagation Characteristics
NISHINO Futoshi; SASAOKA Hideichi; IWAI Hisato
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(445) 373 - 378, 25 Feb. 2009 - A Study of the Effect of Power, Timing, and Frequency Offset Differences on Multi-Site Cooperative MIMO Systems
YAMAMOTO Toshiaki; IWAI Hisato; UEDA Tetsuro; OBANA Sadao
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(445) 77 - 82, 25 Feb. 2009 - Study of Multiuser Interference Canceller for Asynchronous OFDMA
HARADA Yosuke; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(391) 89 - 94, 15 Jan. 2009 - Security Evaluation of Secret Communication System using Multi-Antenna Interference Transmission
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(386) 7 - 12, 14 Jan. 2009 - B-17-8 Technical Issues of Multi-Site Cooperative MIMO Transmission for Public-Private Cooperative Cognitive Radio Access Networks
Yamamoto Toshiaki; Iwai Hisato; Ueda Tetsuro; Obana Sadao
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 614 - 614, 2009 - An Experimental Analysis of Propagation Loss Characteristics at Urban NLOS V2V Intersections
SUGAE Ippei; NIWA Eiji; CAI Shengwei; IWAI Hisato; KIZU Masafumi; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(341) 1 - 6, 04 Dec. 2008 - A Study on Secret Communication System utilizing Multi-Antenna Interference Transmission
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(305) 89 - 94, 12 Nov. 2008 - B-5-94 Research and Development of Multi-Gigabit Wireless LAN System : Simulation Evaluation of Key Generation time in Situation of Sector Antenna
Umaba Takayuki; Harada Yosuke; Ueba Masazumi; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2008(1) 407 - 407, 02 Sep. 2008 - B-5-93 Research and Development of Multi-Gigabit Wireless LAN System : Simulation Evaluation of Privacy Amplify about Key Generation System in Millimeter Waveband
Harada Yosuke; Umaba Takayuki; Ueba Masazumi; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2008(1) 406 - 406, 02 Sep. 2008 - B-21-13 Tree-based Multicast Routing in Wireless Mesh Networks
Matsuda Tomoki; Nori-Shirazi Mehdad; Zhang Bing; Iwai Hisato
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2008(2) 371 - 371, 02 Sep. 2008 - Experimental Results and Evaluation By Ray-tracing on Received Signal Level in V2V Environments
SUGAE Ippei; IWAI Hisato; SASAOKA Hideichi; CAI Shengwei; SASAKI Kunihiko; HORIMATSU Tetsuo
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(148) 13 - 16, 16 Jul. 2008 - A Study on Improvement of Tolerance for Eavesdropping in Key Agreement Scheme Using ESPAR Antenna
SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 108(148) 41 - 46, 16 Jul. 2008 - Simplified Prediction Scheme of Propagation Loss over Non Line-of-Sight Intersections in V2V Communications
TANGO Toshihiro; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(543) 1 - 6, 13 Mar. 2008 - A Study on Information Embedding Scheme to Transmission Signal
ISHIZAKI Shunsuke; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(519) 51 - 58, 06 Mar. 2008 - B-1-2 Spatial Correlation of Secret Information Sharing Technique Based on Propagation Characteristics
IWAI Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2008(1) 2 - 2, 05 Mar. 2008 - B-1-60 Prediction of Propagation Loss over Non Line-of-Sight Intersections in Vehicle to Vehicle Communications
Tango Toshihiro; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2008(1) 60 - 60, 05 Mar. 2008 - B-5-67 A Study of Wireless Steganography in MC-CDMA System
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2008(1) 453 - 453, 05 Mar. 2008 - B-5-146 Research and Development of Multi-Gigabit Wireless LAN Systems (21) : A Study of Data Deletion Process in Procedure of Key Generation
Sadamatsu Hirokazu; Harada Yosuke; Hashimoto Toru; Ueba Masazumi; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2008(1) 532 - 532, 05 Mar. 2008 - B-5-147 Research and Development of Multi-Gigabit Wireless LAN Systems (22) : Simulation Evaluation of Error Correction Process about Key Generation System in Millimeter Waveband
Harada Yosuke; Sadamatsu Hirokazu; Hashimoto Toru; Ueba Masazumi; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2008(1) 533 - 533, 05 Mar. 2008 - B-5-148 Research and Development of Multi-Gigabit Wireless LAN Systems (23) : Ralationship between a Situation of Sector Antenna and Characteristics of Generatad Key
Hashimoto Toru; Sadamatsu Hirokazu; Ueba Masazumi; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2008(1) 534 - 534, 05 Mar. 2008 - Improvement of BER Performance in OFDM Systems with PAPR Reduction
MATSUZAWA Hirofumi; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(518) 223 - 228, 05 Mar. 2008 - A Study on Error Correction Using Block Turbo Codes in Key Agreement Scheme Based on Radio Propagation
SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(498) 49 - 54, 28 Feb. 2008 - Multiuser Detection with Quasi-Maximum Likelihood Estimation for MC-CDMA System
SHIBATA Toyonobu; SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(440) 133 - 138, 17 Jan. 2008 - An Accurate Error Rate Detection Scheme by Pseudo Error Monitoring
ISHIZAKI Shunsuke; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(431) 1 - 6, 16 Jan. 2008 - 無線通信シミュレーションのための電波伝搬基礎
岩井誠人
アンテナ 伝搬における設計 解析手法ワークショップ (第35回), Sep. 2008, 電子情報通信学会 アンテナ 伝播研究専門委員会, 2008 - Adaptive Multiplexing Control Scheme of MC-CDMA by Link Quality Estimation Considering Multipath Distortion Deterioration in MIMO System
SADAMATSU Hirokazu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(402) 109 - 114, 13 Dec. 2007 - Study on Delay Wave Canceller and Application to OFDMA System
HARADA Yosuke; YAMADA Shogo; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(306) 25 - 30, 01 Nov. 2007 - Experimental Evaluation of Distance Measurement by Radio Communications
TAKAYA Yuki; KATO Makoto; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(260) 81 - 85, 11 Oct. 2007 - Wireless Steganography by Embedded MC-CDMA Signals for OFDM Systems
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(262) 49 - 54, 11 Oct. 2007 - An analysis on estimation characteristics of propagation channel based on received signals at different locations
INOUE Keisuke; TANGO Toshihiro; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(210) 1 - 6, 30 Aug. 2007 - A-6-1 Soft-Input Soft-Output Iterative Decoding for Product Codes Using Table-Aided Soft-Decision Decoding
SHIMIZU Takayuki; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2007 144 - 144, 29 Aug. 2007 - B-1-173 An analysis on estimation characteristics of propagation channel based on received signals at different locations
INOUE Keisuke; TANGO Toshihiro; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2007(1) 173 - 173, 29 Aug. 2007 - B-5-85 Wireless Steganography by Embedded MC-CDMA Signal in Digital Mobile Communications
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2007(1) 407 - 407, 29 Aug. 2007 - B-5-108 Research and Development of Multi-Gigabit Wireless LAN System : Simulation Evaluation of Key Generation System in Millimeter Waveband
Sadamatsu Hirokazu; Hashimoto Toru; Itoh Takashi; Ueda Masazumi; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2007(1) 430 - 430, 29 Aug. 2007 - B-5-109 Research and Development of Multi-Gigabit Wireless LAN Systems : A Study on Security Improvement about Key Generation System in Millimeter Waveband
Hashimoto Toru; Sadamatsu Hirokazu; Itoh Takashi; Ueda Masazumi; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2007(1) 431 - 431, 29 Aug. 2007 - B-5-132 A Study of Key Generation Using FFT and Multi-Level Quantization in Secret Key Agreement Scheme
安川 真平; 岩井 誠人; 笹岡 秀一
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2007(1) 454 - 454, 29 Aug. 2007 - FH Interference Wave Countermeasures in Scheme of Secret Key Agreement Based on the Channel Characteristics of OFDM
KITAURA Akito; IWAI Hisato; SASAOKA Hideichi
The IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences (Japanese edition) A, The Institute of Electronics, Information and Communication Engineers, 90(5) 488 - 491, 01 May 2007 - An analysis of propagation loss characteristic for inter-vehicle communications in non-line of sight intersections using ray-tracing technique
TANGO Toshihiro; IWAI Hisato; MURAKAMI Yuichi; SASAKI Kunihiko; HORIMATSU Tetsuo
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 107(3) 31 - 36, 19 Apr. 2007 - Method for Reducing Computational Complexity of Soft-Decision Decoding Based on Ordered Statistics
SHIMIZU Takayuki; HORAI Kenya; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(595) 167 - 172, 09 Mar. 2007 - Estimation of Fading Characteristics Based on Received Signals at Multiple Different Locations
IWAI Hisato; INOUE Keisuke; TANGO Toshihiro; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(561) 81 - 84, 08 Mar. 2007 - Multi-signal Detection Technique using Interference Canceller in Undersampling Systems
YAMASAKI Kazuhiro; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(557) 49 - 56, 08 Mar. 2007 - Wireless Steganography by Embed Predistortion Spectrum Spread Signal in Digital Mobile Communication
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(594) 129 - 134, 08 Mar. 2007 - A-6-10 Method for reducing computational complexity of soft-decision decoding based on ordered statistics
SHIMIZU Takayuki; HORAI Kenya; IWAI Hisato; SASAOKA Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2007 203 - 203, 07 Mar. 2007 - B-1-35 Estimation of Channel Characteristics Based on Received Signals at Different Locations
INOUE Keisuke; TANGO Toshihiro; IWAI Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2007(1) 35 - 35, 07 Mar. 2007 - B-5-1 Hidden Communication System Based on Wireless Channel Characteristic
KITANO Takayasu; IWAI Hisato; SASAOKA Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2007(1) 415 - 415, 07 Mar. 2007 - B-5-23 An Adaptive Multiplexing Control Scheme Based on Instantaneous SNR in MIMO-MC-CDMA Systems
Sadamatsu Hirokazu; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2007(1) 437 - 437, 07 Mar. 2007 - B-5-131 Research and Development of Multi-Gigabit Wireless LAN Systems : Characteristic Evaluation of Secret Key Generation System in Millimeter Waveband
Hashimoto Toru; Sadamatsu Hirokazu; Itoh Takashi; Ueba Masazumi; Ohira Takashi; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2007(1) 545 - 545, 07 Mar. 2007 - B-7-103 Development of Sensor Networks for outdoor Data Collecting System
Kobayashi Yuma; Gotoh Shigeo; Iwai Hisato; Sasaoka Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2007(2) 193 - 193, 07 Mar. 2007 - Development of Sensor Networks for Outdoor Data Collecting System
KOBAYASHI Yuma; GOTOH Shigeo; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(555) 41 - 44, 28 Feb. 2007 - Soft-Decision Decoding of Product Codes Based on Table-aided Scheme
HORAI Kenya; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(516) 31 - 36, 23 Jan. 2007 - Evaluation of channel characteristics estimation accuracy based on received signals at different locations by computer simulations
INOUE Keisuke; TANGO Toshihiro; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(491) 13 - 18, 18 Jan. 2007 - A Secret Communication System Based on Fading Fluctuation in Mobile Radio Channel
SUMI Takenori; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(491) 19 - 24, 18 Jan. 2007 - B-5-69 Improvement of BER Performance in OFDM Systems with PAPR Suppression using Clipping
MATSUZAWA Hirofumi; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 391 - 391, 2007 - B-17-18 A Study on Information Embedding Scheme by Perturbation of Tap Coefficients of Digital Filters
ISHIZAKI Shunsuke; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 496 - 496, 2007 - Security Evaluation of Wireless Secret Key Generation System Using ESPAR Antenna
HASHIMOTO Toru; ITOH Takashi; OHIRA Takashi; IWAI Hisato; SASAOKA Hideichi; KOBARA Kazukuni; IMAI Hideki
情報理論とその応用シンポジウム予稿集 = The proceedings of the Symposium on Information Theory and Its Applications, 29(2) 669 - 672, 28 Nov. 2006 - A Private Key Agreement Scheme Based on Multipath Time Delay in UWB Systems
KITAURA Akito; SUMI Takenori; TANGO Toshihiro; IWAI Hisato; SASAOKA Hideichi
情報理論とその応用シンポジウム予稿集 = The proceedings of the Symposium on Information Theory and Its Applications, 29(2) 755 - 758, 28 Nov. 2006 - B-1-44 An analysis of propagation loss characteristics in indoor short range wireless communications using ray-tracing technique
Tango Toshihiro; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2006(1) 44 - 44, 07 Sep. 2006 - B-5-59 A Secret Key Agreement Scheme Based on Multipath Time Delay in UWB System
KITAURA Akito; SUMI Takenori; TANGO Toshihiro; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2006(1) 419 - 419, 07 Sep. 2006 - B-5-60 A Secret Communication System Based on Noise and Irregularity of Radio Channel
Sumi Takenori; Iwai Hisato; Sasaoka Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2006(1) 420 - 420, 07 Sep. 2006 - B-5-61 A Private Key Sharing Scheme Based on BER Fluctuations Using Multiple Antennas
KITANO Takayasu; KITAURA Akito; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2006(1) 421 - 421, 07 Sep. 2006 - B-5-119 Measurement of Operation Area and Success Rate of Key Generation of ESPARSKey
HORAI Kenya; HASHIMOTO Toru; ITOH Takashi; OHIRA Takashi; IWAI Hisato; SASAOKA Hideichi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2006(1) 479 - 479, 07 Sep. 2006 - A Study on Error Correction in Secret Key Agreement Scheme Using ESPAR Antenna
HORAI Kenya; IWAI Hisato; SASAOKA Hideichi; OHIRA Takashi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(235) 105 - 110, 06 Sep. 2006 - An analysis of propagation loss characteristics in indoor short range wireless communications using ray-tracing technique
TANGO Toshihiro; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(209) 7 - 12, 17 Aug. 2006 - An Analysis on Error Rate Detection by Pseudo Error Monitoring
IWAI Hisato; WATANABE Takashi; TAKAI Makoto; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 106(40) 35 - 40, 11 May 2006 - A study on authentic method using a scheme of secret key agreement based on the radio channel characteristics
KITAURA Akito; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 105(666) 129 - 134, 17 Mar. 2006 - A high-efficiency Hybrid-ARQ scheme using channel quality estimation
TAKAI Makoto; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 105(666) 217 - 222, 17 Mar. 2006 - B-5-127 Cognitive Communication System Architecture for Spectral Efficient Wireless Networks
Aust Stefan; Taniguchi Noriyuki; Hasegawa Akio; Davis Peter; Yamaguchi Akira; Iwai Hisato; Obana Sadao
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2006(1) 480 - 480, 08 Mar. 2006 - B-1-22 A Study on path loss characteristics in urban environments
SHIOTA Ayako; IWAI Hisato; SASAOKA Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2006(1) 22 - 22, 08 Mar. 2006 - B-5-183 Study on Error Correction Scheme in MIMO Systems
YAMANAKA Yusaku; IWAI Hisato; SASAOKA Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2006(1) 536 - 536, 08 Mar. 2006 - Evaluation of Multiple Interface Wireless Access Point for Cognitive Broadband Networks
AUST Stefan; HASEGAWA Akio; DAVIS Peter; YAMAGUCHI Akira; IWAI Hisato; OBANA Sadao
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 105(624) 31 - 36, 02 Mar. 2006 - Study on delay wave canceller for OFDM system in land mobile communication
YAMADA Shogo; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 105(623) 145 - 150, 01 Mar. 2006 - A scheme of Private Key Agreement Based on Fluctuations of BER in Land Mobile Radio
KITANO Takayasu; KITAURA Akito; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 105(623) 235 - 240, 01 Mar. 2006 - Maximum Likelihood Multi-User Detection for MC-CDMA Systems
MIYAMOTO Yusuke; IWAI Hisato; SASAOKA Hideichi
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 105(559) 161 - 166, 19 Jan. 2006 - B-5-126 Wireless Routing Control for Cognitive Wireless Access Network
Yamaguchi Akira; Taniguchi Noriyuki; Hasegawa Akio; Aust Stefan; Fukuhara Tadayuki; Takizawa Yasuhisa; Davis Peter; Zhang Bing; Iwai Hisato; Obana Sadao
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 479 - 479, 2006 - B-5-180 A Study of OFDM Adaptive Modulation with Pseudo Error Estimation Method
WATANABE Takashi; IWAI Hisato; SASAOKA Hideichi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 533 - 533, 2006 - Interaction between Ad Hoc Forwarding and The 802.11 MAC in Ad Hoc Mobile Networks using Directional Antenna
UEDA Tetsuro; SUGIYAMA Keizo; IWAI Hisato; OBANA Sadao; ROY Siuli; CHATTERJEE Sanjay; BANDYOPADHYAY Somprakash
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 105(405) 67 - 70, 17 Nov. 2005 - A Study on Location Accuracy of Autonomous Self Location Estimation Method using Received-Signal Strength
TAKIZAWA YASUHISA; DAVIS PETER; IWAI HISATO; KAWAI MAKOTO; YAMAGUCHI AKIRA; OBANA SADAO
IPSJ SIG technical reports, Information Processing Society of Japan (IPSJ), 35(113) 1 - 8, 17 Nov. 2005 - A Study on Multi-Hop Terminal Cooperation for Cognitive Radio Network
TAKIZAWA Yasuhisa; TANIGUCHI Noriyuki; HASEGAWA Akio; DAVIS Peter; YAMAGUCHI Akira; ZHANG BING; IWAI Hisato; OBANA Sadao
ITE technical report, 映像情報メディア学会, 29(50) 79 - 84, 15 Sep. 2005 - A Study on Multi-Hop Terminal Cooperation for Cognitive Radio Network
TAKIZAWA Yasuhisa; TANIGUCHI Noriyuki; HASEGAWA Akio; DAVIS Peter; YAMAGUCHI Akira; Zhang BING; IWAI Hisato; OBANA Sadao
IEICE technical report, The Institute of Electronics, Information and Communication Engineers, 105(283) 79 - 84, 15 Sep. 2005 - A Scheme of Secret Key Agreement Based on Delay Profiles in the UWB System
SUMI Takenori; KITAURA Akito; TACHIBANA Kei; IWAI Hisato; SASAOKA Hideichi
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 105(240) 19 - 24, 18 Aug. 2005 - Avoiding Asymmetric Link and Link Break by Using RSSI Information
TANG Suhua; ZHANG Bing; WATANABE Masahiro; IWAI Hisato; OBANA Sadao
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 105(88) 35 - 40, 19 May 2005 - End-toEnd Fair Channel Access in Mobile Ad Hoc Networks
SHAGDAR Oyunchimeg; ZHANG Bing; IWAI Hisato; OBANA Sadao
IEICE technical report. Information networks, The Institute of Electronics, Information and Communication Engineers, 105(87) 47 - 50, 19 May 2005 - Proposal for node location measurement at communication distance : Distance measurement procedure due to phase difference of multi carriers
WATANABE Masahiro; IWAI Hisato; OBANA Sadao
Technical report of IEICE. RCS, The Institute of Electronics, Information and Communication Engineers, 105(88) 41 - 45, 19 May 2005 - An Autonomous Terminal Location Estimation using Wireless Ad-hoc Network
TAKIZAWA YASUHISA; DAVIS PETER; IWAI HISATO; OBANA SADAO; KAWAI MAKOTO
IPSJ SIG technical reports, Information Processing Society of Japan (IPSJ), 2005(32) 171 - 178, 17 Mar. 2005 - B-21-25 Directional MAC Protocol in Wireless Ad Hoc Networks with Location tracking
Ueda Tetsuro; Iwai Hisato; Obana Sadao; Roy Siuli; Bandyopadhyay Somprakash
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2005(2) 614 - 614, 07 Mar. 2005 - B-21-42 LHA-AODV with Optimized Local Update
TANG Suhua; ZHANG Bing; WATANABE Masahiro; IWAI Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2005(2) 631 - 631, 07 Mar. 2005 - B-21-43 Experiment of the LHA-AODV routing protocol
TANG Suhua; WATANABE Masahiro; IWAI Hisato; YAMASHITA Makoto; YASUKAWA Koji
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2005(2) 632 - 632, 07 Mar. 2005 - Sampling Frequency Selection Scheme in Undersampling Systems
SAHARA Naohiro; KUNISAWA Yoshio; IWAI Hisato; SHIRAI Hiroshi
IEICE technical report. Communication systems, The Institute of Electronics, Information and Communication Engineers, 104(594) 91 - 96, 19 Jan. 2005 - B-21-14 Experimental result of ad hoc routing protocol due to the received signal strength on the road environment
WATANABE Masahiro; TANG Suhua; IWAI Hisato; IGAWA Eitetsu; KUMAMOTO Kazuo; YASUKAWA Koji
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 603 - 603, 2005 - B-1-5 Comparison of Path Loss Characteristics in 5 GHz with 800 MHz
Yonezawa Kenya; Maeyama Toshiyuki; Iwai Hisato; Harada Hiroshi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2004(1) 5 - 5, 08 Mar. 2004 - B-5-119 A Proposal of Multi-hopped Mobile Communications System based on Multi-carrier Transmission Techniques
Ohseki Takeo; Fuke Naoki; Maeshima Osamu; Iwai Hisato; Nohara Mitsuo
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2004(1) 606 - 606, 08 Mar. 2004 - B-5-123 A Study on Connection Rate in Multihop Cellular Networks using Peer-to-Peer Connection Method
FUKE Naoki; MAESHIMA Osamu; IWAI Hisato; SUGIYAMA Keizo; NOHARA Mitsuo
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2004(1) 610 - 610, 08 Mar. 2004 - B-17-16 A Study on Effect of Sampling-Jitter in an Undersampling System
SAHARA Naohiro; KUNISAWA Yoshio; IWAI Hisato; SHIRAI Hiroshi
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2004(1) 851 - 851, 08 Mar. 2004 - Study on Satellite Communications using Ultra Wideband (UWB) Signals
KUNISAWA Yoshio; ISHIKAWA Hiroyasu; IWAI Hisato; SHINONAGA Hideyuki
Technical report of IEICE. SAT, The Institute of Electronics, Information and Communication Engineers, 103(386) 91 - 95, 24 Oct. 2003 - A propagation experiment supposing between terminal relaying in 5GHz band
Maeyama Toshiyuki; Yonezawa Kenya; Iwai Hisato; Harada Hiroshi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2003(1) 38 - 38, 10 Sep. 2003 - A Study on Software Defined Radio for CDMA2000 1xEV-DO Transmission System
Kunisawa Yoshio; Iwai Hisato
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2003(1) 434 - 434, 10 Sep. 2003 - ホットライン KDDI研究所による第4世代移動通信の研究開発
鈴木 利則; 石川 博康; 岩井 誠人
ITUジャーナル, 日本ITU協会, 33(8) 36 - 40, Aug. 2003 - A Measurement of Propagation Loss for 5GHz Band Macro Cell System
YONEZAWA Kenya; MAEYAMA Toshiyuki; IWAI Hisato; SHINONAGA Hideyuki; HARADA Hiroshi; FUJISE Masayuki
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 103(64) 21 - 25, 23 May 2003 - An Experimental Study on Penetration Characteristics from Outdoor to Indoor at 5GHz Band
Yonezawa Kenya; Maeyama Toshiyuki; Iwai Hisato; Shinonaga Hideyuki; Harada Hiroshi; Fujise Masayuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2003(1) 44 - 44, 03 Mar. 2003 - A propagation experiment for 5GHz band NWA system
Maeyama Toshiyuki; Yonezawa Kenya; Iwai Hisato; Shinonaga Hideyuki; Harada Hiroshi; Fujise Masayuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2003(1) 45 - 45, 03 Mar. 2003 - Multipath Propagation Characteristics in 5 GHz Macro-Cellular Environments
Harada Hiroshi; Fujise Masayuki; Yonezawa Kenya; Maeyama Toshiyuki; Iwai Hisato; Shinonaga Hideyuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2003(1) 47 - 47, 03 Mar. 2003 - An Experimental Study on Service-area Size of 5GHz Wireless Access Systems
Kunisawa Yoshio; Yonezawa KenYa; Maeyama Toshiyuki; Iwai Hisato; Shinonaga Hideyuki; Harada Hiroshi; Fujise Masayuki
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2003(1) 684 - 684, 03 Mar. 2003 - Delay spread measurements in a 5GHz macro-cellar system
Yonezawa Kenya; Maeyama Toshiyuki; Iwai Hisato; Harada Hiroshi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 39 - 39, 2003 - A study on path loss model in 5GHz band
Yonezawa Kenya; Maeyama Toshiyuki; Iwai Hisato; Harada Hiroshi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 41 - 41, 2003 - Analysis of Received Perch Channel Data on Field Experiments of Wideband CDMA System
MORIKAWA Daisuke; IWAI Hisato; INOUE Takashi; NAKANISHI Masato; TAKEUCHI Yoshio; WATANABE Fumio
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 1999(1) 243 - 243, 16 Aug. 1999 - Field Experimental Results of RAKE Receiver Performance on Wideband CDMA System
Amano Yoshiaki; Morikawa Daisuke; Iwai Hisato; Inoue Takashi; Nakanishi Masato; Takeuchi Yoshio; Watanabe Fumio
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 1999(1) 270 - 270, 16 Aug. 1999 - B-5-132 Experimental results on RAKE Receiver Performance of Wideband CDMA Testbed System
IWAI Hisato; NIIDA Sumaru; SUZUKI Toshinori; TAKEUCHI Yoshio; WATANABE Fumio
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 1999(1) 483 - 483, 08 Mar. 1999 - B-5-140 Experimental results on Transmission Power Control of Wideband CDMA Testbed System
NIIDA Sumaru; SUZUKI Toshinori; IWAI Hisato; TAKEUCHI Yoshio; WATANABE Fumio
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 1999(1) 491 - 491, 08 Mar. 1999 - Soft Handover Characteristics of Wideband CDMA Testbed System
YAMAGUCHI Akira; MUKAI Tetsuo; MORIKAWA Daisuke; IWAI Hisato; WATANABE Fumio
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 98(604) 57 - 61, 18 Feb. 1999 - Experimental results on receiver performance of Wideband CDMA testbed system
NIIDA Sumaru; SUZUKI Toshinori; IWAI Hisato; INOUE Takashi; TAKEUCHI Yoshio; WATANABE Fumio
IEICE technical report. Microwaves, The Institute of Electronics, Information and Communication Engineers, 98(604) 63 - 68, 18 Feb. 1999 - B-5-133 Soft Handover Indoor Experiment with Wideband CDMA Testbed System
YAMAGUCHI Akira; MUKAI Tetsuo; MORIKAWA Daisuke; IWAI Hisato; WATANABE Fumio
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 484 - 484, 1999 - More about the ETP model
KARASAWA Yoshio; IWAI Hisato
IEICE technical report. Communication systems, The Institute of Electronics, Information and Communication Engineers, 98(88) 1 - 6, 29 May 1998 - Spatial Correlation Statistics of Wideband Signal in Nakagami-Rice Fading Environments
KARASAWA Yoshio; IWAI Hisato
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 97(490) 29 - 36, 22 Jan. 1998 - A Study on Transmission Diversity Performance in CDMA/FDD Mobile Radio
IWAI Hisato; WATANABE Fumio
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 472 - 472, 1998 - Development of Wideband CDMA Testbed System
NIIDA Sumaru; YAMAGUCHI Akira; SUZUKI Toshinori; IWAI Hisato; TAKEUCHI Yoshio; WATANABE Fumio
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 281 - 281, 1998 - IMT-2000 Field Trial with Wide-band CDMA Testbed System
YAMAGUCHI Akira; NIIDA Sumaru; IWAI Hisato; SUZUKI Toshinori; TAKEUCHI Yoshio; WATANABE Fumio
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 282 - 282, 1998 - Analysis of cycle slip in clock recovery on frequency-selective Nakagami-Rice fading channels based on the equivalent transmission-path model
Y Karasawa; T Kuroda; H Iwai
IEICE TRANSACTIONS ON COMMUNICATIONS, IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, E79B(12) 1900 - 1910, Dec. 1996 - Indoor Propagation and High-Speed Signal Transmission Experiments in the 60-GHz Band III: Effects of Antenna Pointing
IWAI Makoto; KUBOYAMA Haruhiro; YAMADA Mitsutoshi; KONISHI Yoshihiko; NAKAMURA Masaru; OHMI Norichika; SATO Katsuyoshi
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 1996(1) 31 - 31, 18 Sep. 1996 - A Study of Reception Diversity Structure on CDMA/TDD System
MIYA Kazuyuki; WATANACE Masatoshi; HAYASHI Masaki; KATO Osamu; NOMMA Koichi; ASANUMA Yutaka; IWAI Hisato
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 1996(1) 335 - 335, 18 Sep. 1996 - lnterference Reduction Performance Using A Time Alignment Technique for CDMA Mobile Communication Systems
ASANUMA Y; TAKAHISHI H; IWAI H; MIYA K; KATO O; HOMMA K
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 1996(1) 336 - 336, 18 Sep. 1996 - A Study on Effect of Power-Control Error for User-Capacity in a CDMA/TDD system
IWAI Hisato; TAKEUCHI Yoshio; MIYA Kazuyuki; KATO Osamu; HOMMA Koichi; ASANUMA Yutaka; TAKAHASHI Hidehiro
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 1996(1) 337 - 337, 18 Sep. 1996 - A study on user capacity characteristics in mobile CDMA/TDD system : Spatial diversity performance
IWAI Hisato; MIYA Kazuyuki; KATO Osamu; HOMMA Koichi; ASANUMA Yutaka; TANAKA Hirokazu; TAKAHASHI Hidehiro
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 1996(1) 408 - 408, 11 Mar. 1996 - A study on user capacity characteristics in CDMA/TDD system : FEC performance
TAKAHASHI H.; TANAKA H.; ASANUMA Y.; IWAI H.; MIYA K.; KATO O.; HOMMA K.
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 1996(1) 409 - 409, 11 Mar. 1996 - Theoretical Consideration on Wideband Channel Modeling in Nakagami-Rice Fading Environment
KARASAWA Y.; IWAI H.
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 95(535) 67 - 72, 26 Feb. 1996 - An Evaluation of Open Loop Transmission Power Control on CDMA/TDD Systems
MIYA Kazuyuki; HAYASHI Masaki; KATO Osamu; HOMMA Koichi; ASANUMA Yutaka; TANAKA Hirokazu; TAKAHASHI Hidehiro; IWAI Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 407 - 407, 1996 - An Investigation on Channel Capacity Characteristics in CDMA Radio with Space-Path Hybrid Diversity Combination System : High Capacity System without Precise Power Control for Multipath Fading
IWAI Hisato; WATANABE Fumio
Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 1995(1) 368 - 368, 05 Sep. 1995 - An Experimental Study on Basestation Antenna Height Dependence of Propagation Characteristics in Residential Micro-Cellular Mobile Radio
IWAI Hisato; WATANABE Fumio; MIZUNO Toshio
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 1995(1) 6 - 6, 27 Mar. 1995 - BER Floor Characteristics due to ISI in Nakagami-Rice Fading Environments based on Equivalent Transmission-Path Model
KARASAWA Yoshio; IWAI Hisato
Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 1995(1) 365 - 365, 27 Mar. 1995 - An Experimental Study on Antenna Height Dependence of Service Area in Residential Micro-Cellular Mobile Radio
IWAI Hisato; YAMAGUCHI Akira; TAKEUCHI Yoshio; OHTA Shinji; WATANABE Fumio; MIZUNO Toshio
電子情報通信学会技術研究報告. EMCJ, 環境電磁工学, 94(497) 1 - 6, 16 Feb. 1995 - 移動通信伝搬路における広帯域伝送信号の強度変動特性に関する検討
岩井誠人
第393回URSI-F分科会, 1995-01, 1995 - A Measurement on Propagation Characteristics in Urban Microcellular System
Iwai Hisato; Matsudo Takashi; Watanabe Fumio; Mizuno Toshio
電子情報通信学会秋季大会講演論文集, The Institute of Electronics, Information and Communication Engineers, 1994(1) 15 - 15, 26 Sep. 1994 - The Key Parameters in Fequency Selective Fading -Key parameters in Nakagami-Rice Fading Environment and - characteristics of Errors due to Inter-Symbol Interference.
Kuroda Tomonori; Iwai Hisato; Karasawa Yoshio
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 93(129) 29 - 33, 08 Jul. 1993 - An equivalent transmission path model for frequency-selective fading and its application to analysis of BER due to intersymbol interference
Karasawa Yoshio; Kuroda Tomonori; Iwai Hisato
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, A P93 - 78, 1993 - A space-path hybrid diversity scheme for base-station reception in CDMA mobile radio communication systems
Karasawa Yoshio; Iwai Hisato; Shiokawa Takayasu
IEICE technical report. Antennas and propagation, The Institute of Electronics, Information and Communication Engineers, 93 41 - 47, 1993 - CDMA移動通信用高耐フェージング基地局アンテナシステム
岩井誠人
信学技報, 92 17 - 22, 1992 - 移動通信広帯域伝送特性評価用電波伝搬モデル-特にCDMA方式評価に適した-
岩井誠人
信学技報, 1991
Books etc
- 情報通信工学
佐藤, 亨
オーム社, Oct. 2021, Contributor - 電波伝搬
朝倉書店, Nov. 2018, Contributor - ワイヤレス通信工学
オーム社, Mar. 2014, Contributor - 移動通信における電波伝搬
コロナ社, 2012, Single work - Securing Wireless Communications at the Physical Layer
Secret Key Agreement Techniques Based on Multipath Propagation Characteristics, Springer, 2012, Contributor - アンテナ工学ハンドブック
オーム社, 2008, Contributor
Industrial Property Rights
Research Projects
- マルチパスフェージングの局所性を超える遠地点伝搬特性推定技術の開発
岩井 誠人
無線通信環境において一般的となるマルチパスフェージング環境においては、フェージングによる伝搬特性の変動が高相関となる離隔距離である相関距離以上に離れた遠方地点の伝搬特性の推定は不可能と考えられてきた。つまり、マルチパスフェージング環境では、電波伝搬特性に「局所性」があると言える。これに対して本研究では、アレーアンテナ構成と到来方向推定技術を応用した信号処理との組み合わせにより、フェージングの相関距離を超えた地点での伝搬特性推定を実現する技術を開発する。 まず、本研究の初年度にあたる令和3年度においては、シミュレーションを中心とした検討を進めた。同じ目的を有する従来検討では、主には、MUSIC法による到来方向推定に最小二乗法による複素振幅推定を組み合わせた方式を用いていたが、両者を一括して実現可能であり、また、処理自体もシンプルである、圧縮センシングを採用した方式を検討した。シミュレーション評価では、検討に着手する最初のステップとしてまず平面波環境における推定特性の確認を行った。その結果を年度内にまとめて口頭発表を行った。その方式を拡張して球面波環境への対応を検討したが、強度が低下する遠方波源からの到来波が検出できなくなる課題が明らかとなり、その対策を検討した。 シミュレーション検討以外にも、令和4年度から実施予定である、実測による評価の準備を進めた。複数アンテナを用いる測定の要としてRFスイッチを用いる構成を検討し、測定システム全体の検討を行った。, 日本学術振興会, 科学研究費助成事業, 2021/04 -2024/03, 基盤研究(C), 同志社大学 - ITS Network Model for Security and Privacy
Sato Kenya
The requirement of security and privacy in ITS networks is different from the general Internet. Specifically, each vehicle periodically broadcasts vehicle ID, position and speed information as it moves, and surrounding vehicles receive the information to improve safety such as collision avoidance. Using this characteristic, we developed a method for detecting vehicle misbehavior and detecting illegal data, and showed its effectiveness by simulation. In our research, it was shown that the detection rate of malicious data is improved by increasing the threshold value by taking measures against vehicle information disguise. We also developed a method for tracking malicious information when a malicious vehicle is found, even if the vehicle moves., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2016/04 -2020/03, Grant-in-Aid for Scientific Research (B), Doshisha University - Development of propagation loss estimation formula for ITS systems
Iwai Hisato
A propagation path loss estimation formula in ITS communication environments such as inter-vehicle communications was developed. In the formula, the propagation loss between a transmitter and a receiver is predicted based on road parameters. It is established based on the results of the theoretical analysis and the measured data. While the formula is a simple one, it realizes the comparable estimation accuracy as the ray-tracing method which is a typical existing prediction method., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2013/04 -2016/03, Grant-in-Aid for Scientific Research (C), Doshisha University - Radio Signal Hiding Scheme Based on Fluctuation of Radio Propagation Characteristics Using Multiple Transmitting and Receiving Antenna
SASAOKA Hideichi; IWAI Hisato
Feasibility of radio signal hiding scheme using multiple transmitting and receiving antenna is studied in a radio-layer information security. As a result, it is found that the scheme of the separated signal transmission using multiple antenna system is useful for signal hiding. It also found that improvement of anti-attack performance against eavesdropper is further studies., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2010 -2012, Grant-in-Aid for Scientific Research (C), Doshisha University - Study on the monitor system for space electromagnetic environment
KOJIMA Hirotsugu; YAMAKAWA Hiroshi; IWAI Hisato; USUI Hideyuki; YAGITANI Satoshi; UEDA Yoshikatsu
We succeeded in developing the very small plasma wave receiver chip using the analogue ASIC. The very small plasma wave receiver chip is the essential component in a sensor node which the Monitor system for space electromagnetic environment (MSEE) consists of. Using this chip, we developed the business card size waveform capture receiver. We also succeeded in developing the small electromagnetic sensors with high sensitivities, which are installed to the MSEE sensor node. Furthermore, we developed the computer simulation code, which can calculate microscopic plasma processes under the spatial anisotropy., Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, 2007 -2010, Grant-in-Aid for Scientific Research (A), Kyoto University
Media Coverage
Research cooperation among industry, academia and government
- Joint Research Theme：Study on radio wave propagations, adhoc radio communications and software-defined radioKeywordradio wave propagations, adhoc radio communications, software-defined radio
Research Seeds
- Propagation analysis by ray-tracing method in radio communicationsResearch Fields: Information and CommunicationAffiliation/Name: Hisato Iwai
- Information security in wireless communication at physical layer based on radio propagationResearch Fields: Information and CommunicationAffiliation/Name: Hideichi Sasaoka:Hisato Iwai
