IWAI Hisato
Faculty of Science and Engineering Department of Electronics
Professor
Last Updated :2021/08/05

Researcher Profile and Settings

Research Interests

  • wireless security
  • radio transmission technology
  • Radio wave propagations

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

Academic & Professional Experience

  • Faculty of Science and Engineering, Department of Electronics, Doshisha University, 2012/04 - Today
  • Faculty of Science and Engineering, Department of Electronics, Doshisha University, 2008/04 - 2012/03
  • Advanced Telecommunications Research Institute International, 2004/12 - 2005/03
  • KDDI R&D Laboratories Inc., 2002/05 - 2004/11

Education

  • Kyoto University, 1987/03 - 1989/04
  • Kyoto University, Graduate School, Division of Engineering, 1989
  • Kyoto University, Faculty of Engineering, 1983/04 - 1987/03
  • Kyoto University, Faculty of Engineering, 1987
  • Nara Women's University, Faculty of Letters, 1979/04 - 1982/03

Association Memberships

  • INFORMATION PROCESSING SOCIETY OF JAPAN
  • THE INSTITUTE OF ELECTRICAL ENGINEERS OF JAPAN

Published Papers

  • 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 paper (bulletin of university, 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
    Jan. 2021, Research paper (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
    Jan. 2021, Research paper (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
    Jan. 2021, Research paper (international conference proceedings)
  • 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, Japanese
  • Estimation of Propagation Properties at a Remote Location Using MUSIC Method in a 3-Dimensional Space
    Shunsuke Abe, Hisato Iwai, Hideichi Sasaoka
    Harris Science Research Institute of Doshisha University, 59(2)66 - 72, Jul. 2018, Japanese
  • Estimation of Channel State at a Different Radio Frequency Based on Impulse Response Estimation by Compressed Sensing
    Yuma Nakai, Hisato Iwai, Hideichi Sasaoka
    Harris Science Research Institute of Doshisha University, 59(2)81 - 89, Jul. 2018, Japanese
  • Secret Key Agreement Scheme Based on Phase Variation of Fading in Mobile Communications
    Hiroki Nakai, Hideichi Sasaoka, Hisato Iwai
    Harris Science Research Institute of Doshisha University, 59(2)113 - 124, Jul. 2018, Japanese
  • A Study on Blind Signal Separation Using Independent Component Analysis in Multiple Antenna Systems
    Yuki Norimatsu, Hideichi Sasaoka, Hisato Iwai
    Harris Science Research Institute of Doshisha University, 58(2)63 - 72, Jul. 2017, Japanese
  • 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, English, Research paper (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, English
  • 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, Japanese
  • Secret Information Transmission Scheme in MIMO System Using Time-variant Pre-coding
    Hideichi Sasaoka, Takuma Takimura, Hisato Iwai
    Harris Science Research Institute of Doshisha University, 57(1)7 - 17, Apr. 2016, Japanese
  • 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, English, Research paper (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, Japanese, Research paper (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, Japanese
  • A Study on Estimation Method of Communication Area using Cooperated Monitoring of Communication Quality in Cognitive Radio
    Tatsuya Murayama, Hideichi Sasaoka, Hisato Iwai
    Harris Science Research Institute of Doshisha University, 56(2)95 - 105, Jul. 2015, Japanese
  • Evaluation of Terminal Position Estimation by Position Fingerprinting Technique of Radio Wave Using Array Antenna
    Mayu Ohtani, Hisato Iwai, Hideichi Sasaoka
    Harris Science Research Institute of Doshisha University, 56(1)41 - 47, Apr. 2015, Japanese
  • 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, English, Research paper (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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, English
  • 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, English
  • 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, Japanese
  • 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, Japanese
  • 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, English
  • 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, English, Research paper (scientific journal)
  • 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, English
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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
  • Secret key agreement techniques based on radio propagation characteristics
    岩井 誠人
    Proceedings of Korea-Japan Technical Meeting on Antennas and Propagation, 2010
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese, Research paper (bulletin of university, 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, English, Research paper (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, Japanese
  • 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
  • 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, English
  • 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, Japanese
  • 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, Japanese
  • 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 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, Japanese
  • Study on satellite communications using ultra wideband (UWB) signals
    岩井 誠人
    Proc. 2003 Joint Conference on Satellite Communications, 185 - 189, 2003
  • 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., 76(B)103 - 112, May 1993, English, Research paper (scientific journal)
  • 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, English, Research paper (scientific journal)
  • 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, English, Research paper (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, English, Research paper (international conference proceedings)
  • 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, English, Research paper (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, English, Research paper (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, English, Research paper (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, Research paper (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, Research paper (international conference proceedings)
  • 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, English, Research paper (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, English, Research paper (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, English, Research paper (international conference proceedings)
  • 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, English, Research paper (international conference proceedings)
  • 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, English, Research paper (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, English, Research paper (international conference proceedings)
  • 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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (international conference proceedings)
  • 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, English, Research paper (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, English, Research paper (international conference proceedings)
  • 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, English, Research paper (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, English, Research paper (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, English, Research paper (scientific journal)
  • Multipath Delay Profile Models for ITS in 700MHz Band
    Hisato Iwai, Satoshi Goto
    2011 IEEE VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL), IEEE, 1 - 5, 2011, English, Research paper (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, English, Research paper (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, 281 - 285, 2011, English, Research paper (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, English
  • 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, English, Research paper (international conference proceedings)
  • 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, 69 - 70, 2010, English, Research paper (international conference proceedings)
  • 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, English, Research paper (international conference proceedings)
  • 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, 17148 - 159, 2009, English, Research paper (international conference proceedings)
  • 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, English, Research paper (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, English, Research paper (international conference proceedings)
  • 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, 4867173 - 187, 2007, English, Research paper (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, English, Research paper (international conference proceedings)
  • 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, English, Research paper (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, English, Research paper (international conference proceedings)
  • 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, English, Research paper (scientific journal)
  • 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, English, Research paper (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, 200653 - 53, 2006, English, Research paper (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, English, Research paper (international conference proceedings)
  • 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, 3741275 - 280, 2005, English, Research paper (scientific journal)
  • 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, English, Research paper (international conference proceedings)
  • 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, English, Research paper (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, English, Research paper (scientific journal)
  • 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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (scientific journal)
  • 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, English, Research paper (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, English, Research paper (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, English, Research paper (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, English, Research paper (scientific journal)

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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • Prediction Formula of Propagation Loss in Kokura Urban Cellular Environment
    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, Japanese
  • An OFDM system using nonlinear signal decomposition based on radio propagation characteristics and multiple antenna transmission
    117(456)87 - 92, 28 Feb. 2018, Japanese
  • Evaluation of Eavesdropping Resistance in Secret Information Transmission Scheme Using Signal Decomposition and Spatial Vector Composition
    117(394)177 - 182, 22 Jan. 2018, Japanese
  • Trial of Propagation Model Contest
    117(382)53 - 55, 18 Jan. 2018, Japanese
  • Modeling of Propagation Loss of Ray-Tracing Data in an Urban Cellular Environment Based on Physical Considerations of Dominant Arriving Waves
    117(382)57 - 62, 18 Jan. 2018, Japanese
  • Dependence on Antenna Height of Human Body Shadowing Loss in an Indoor Environment
    117(181)19 - 22, 24 Aug. 2017, Japanese
  • A Study on OFDM Transmission using Multi Antenna Transmission based on Vector Decomposition of Complex Modulation Signal and Spatial Vector Composition Reception
    117(132)31 - 36, 19 Jul. 2017, Japanese
  • A Study on Sampling Method of Independent Time Series and Evaluation of Secret Key Capacity in Secret key Agreement Based on Fading Variation
    117(132)49 - 54, 19 Jul. 2017, Japanese
  • Performance Evaluation of Blind MIMO System Using Independent Component Analysis and Its Application to Secret Information Transmission
    117(132)209 - 214, 19 Jul. 2017, Japanese
  • Evaluation of Human Body Shadowing Loss in an Indoor Environment
    117(31)85 - 90, 18 May 2017, Japanese
  • Analysis of Car-Cabin Propagation Characteristics by FDTD Method using a Vehicle 3D Model
    116(397)33 - 38, 19 Jan. 2017, Japanese
  • Estimation of Propagation Properties at a Remote Location in a 3-Dimensional Space by a Planar Array Antenna
    116(317)59 - 64, 24 Nov. 2016, Japanese
  • Secret Key Transmission Scheme using Products of Secret Signals and pseudo Gaussian Signals in MIMO system
    116(257)53 - 58, 20 Oct. 2016, Japanese
  • Wireless Transmission Scheme using Signal Decomposition and Spatial Vector Composition Based on Radio Propagation Characteristics
    116(257)59 - 64, 20 Oct. 2016, Japanese
  • Study on Secret Information Sharing with Propagation Coefficient and Public Transmission of Antenna Weight
    116(257)65 - 70, 20 Oct. 2016, Japanese
  • Prediction Formula of Propagation Loss in a Dense Human Body Shadowing Environment in 5GHz Wireless Communications
    115(506)37 - 42, 10 Mar. 2016, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • Wireless Steganography using Nonlinear Amplifier in OFDM system
    115(394)261 - 266, 18 Jan. 2016, Japanese
  • Secret Key Agreement Scheme Using Random Number Transmission over a Public Channel and Using Partial Sequence Selection Based on Radio Propagation Characteristics
    115(288)13 - 18, 04 Nov. 2015, Japanese
  • Secret Key Agreement Scheme with Measuring Radio Wave Propagation Characteristics
    115(288)19 - 24, 04 Nov. 2015, Japanese
  • A Study on Improvement of eavesdropping tolerance in chaos communication
    115(288)25 - 30, 04 Nov. 2015, Japanese
  • Evaluation of Estimation Accuracy of a Terminal Position Estimation Method based on Position Fingerprint using Directional Antennas in an Indoor Environment
    115(286)185 - 188, 04 Nov. 2015, Japanese
  • An Analysis of Generation Method of OFDM Modulation Wave Using Spatial Composite of Quasi-constant Envelope Modulation Wave
    115(288)275 - 280, 04 Nov. 2015, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • An Accuracy Evaluation of Path Loss Models over Non Line-of-Sight Intersections in V2V communications
    115(113)179 - 184, 24 Jun. 2015, Japanese
  • An Accuracy Improvement of a Path Loss Model for Over-the-corner Vehicle to Vehicle communications (V2V)
    115(40)7 - 12, 21 May 2015, Japanese
  • Effect on Propagation Loss by Variations of Transmitter and Receiver Positions in Road Width Direction in Inter-Vehicle Communication Environments
    115(12)89 - 94, 22 Apr. 2015, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • FOREWORD
    IWAI Hisato
    IEICE Transactions on Communications, The Institute of Electronics, Information and Communication Engineers, 98(1)134 - 134, 2015, English
  • FOREWORD
    IWAI Hisato
    IEICE Transactions on Communications, The Institute of Electronics, Information and Communication Engineers, 98(3)387 - 387, 2015, English
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, English
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, English
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • MESSAGE
    IWAI Hisato
    IEICE Transactions on Communications, The Institute of Electronics, Information and Communication Engineers, 97(6)1112 - 1112, 2014, English
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • B-1-203 Terminal Position Detection based on Signal Level Variation using Array Antennas
    Proceedings of the IEICE General Conference, The Institute of Electronics, Information and Communication Engineers, 2013(1)203 - 203, 05 Mar. 2013, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • Evaluation of Fundamental Characteristics of Wireless Terminal Authentication Scheme Based on Radio Propagation Characteristics
    36(6)13 - 18, Feb. 2012, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, English
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • A Study of Accuracy Improvement of Location Estimation Method Using SOM Algorithm
    TAKAYA YUKI, IWAI HISATO, TAKIZAWA YASUHISA, SASAOKA HIDEITI
    48g1 - g8, 04 Mar. 2010, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, 2007144 - 144, 29 Aug. 2007, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • B-5-132 A Study of Key Generation Using FFT and Multi-Level Quantization in Secret Key Agreement Scheme
    Proceedings of the Society Conference of IEICE, The Institute of Electronics, Information and Communication Engineers, 2007(1)454 - 454, 29 Aug. 2007, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, English
  • 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, Japanese
  • 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, Japanese
  • 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, 2007203 - 203, 07 Mar. 2007, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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
    29(2)669 - 672, 28 Nov. 2006, Japanese
  • A Private Key Agreement Scheme Based on Multipath Time Delay in UWB Systems
    KITAURA Akito, SUMI Takenori, TANGO Toshihiro, IWAI Hisato, SASAOKA Hideichi
    29(2)755 - 758, 28 Nov. 2006, English
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, English
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, 29(50)79 - 84, 15 Sep. 2005, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, English
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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
    94(497)1 - 6, 16 Feb. 1995, Japanese
  • A Measurement on Propagation Characteristics in Urban Microcellular System
    Iwai Hisato, Matsudo Takashi, Watanabe Fumio, Mizuno Toshio
    The Institute of Electronics, Information and Communication Engineers, 1994(1)15 - 15, 26 Sep. 1994, Japanese
  • 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, Japanese
  • 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, Japanese
  • 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, 9341 - 47, 1993, Japanese
  • 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, English, Other
  • 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, English, Other
  • 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, English, Other
  • 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, English, Other
  • 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, English

Research cooperation among industry, academia and government

  • Joint Research Theme:Study on radio wave propagations, adhoc radio communications and software-defined radio
    Keywordradio wave propagations, adhoc radio communications, software-defined radio

Research Seeds

  • Propagation analysis by ray-tracing method in radio communications
    Research Fields: Information and Communication
    Affiliation/Name: Hisato Iwai

  • Information security in wireless communication at physical layer based on radio propagation
    Research Fields: Information and Communication
    Affiliation/Name: Hideichi Sasaoka:Hisato Iwai