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Masahiro UMEHIRA

A Feasibility Study on the Safety Confirmation System Using NFC and UHF Band RFID Tags Shigeki TAKEDA Kenichi KAGOSHIMA Masahiro UMEHIRA
Publication: Publication Date: 2019/09/01 Vol. E102-D No. 9 pp. 1673-1675 Type of Manuscript: Special Section LETTER (Special Section on Log Data Usage Technology and Office Information Systems) Category: System Construction Techniques Keyword: safety confirmation system, disaster, NFC, UHF band RFID tag,
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Improving Performance by Countering Human Body Shadowing in 60GHz Band Wireless Systems by Using Two Transmit and Two Receive Antennas Tomoaki NAGAYAMA Shigeki TAKEDA Masahiro UMEHIRA Kenichi KAGOSHIMA Teruyuki MIYAJIMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2016/02/01 Vol. E99-B No. 2 pp. 422-429 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: 60GHz band, shadowing, human body, array antenna,
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Feasibility of Guard Band Utilization for Cognitive Radio Using TV White Space Noriyuki YAGINUMA Masahiro UMEHIRA Hiroshi HARADA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/02/01 Vol. E97-B No. 2 pp. 343-349 Type of Manuscript: Special Section PAPER (Special Section on Technologies for Effective Utilization of Spectrum White Space) Category: Keyword: Cognitive Radio, White Space, ISDB-T, Guard Band,
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Design and Performance of Overlap FFT Filter-Bank for Dynamic Spectrum Access Applications Motohiro TANABE Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/04/01 Vol. E95-B No. 4 pp. 1249-1255 Type of Manuscript: Special Section PAPER (Special Section on Cognitive Radio and Heterogeneous Wireless Networks in Conjunction with Main Topics of CrownCom2011) Category: Keyword: dynamic spectrum access, overlap FFT, filter-bank, adjacent channel interference,
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A Novel Dynamic Channel Access Scheme Using Overlap FFT Filter-Bank for Cognitive Radio Motohiro TANABE Masahiro UMEHIRA Koichi ISHIHARA Yasushi TAKATORI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/12/01 Vol. E92-B No. 12 pp. 3589-3596 Type of Manuscript: Special Section PAPER (Special Section on Dynamic Spectrum Access) Category: Spectrum Allocation Keyword: dynamic spectrum access, channel access, overlap FFT, filter-bank,
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Recent Japanese R&D in Satellite Communications Masahiro UMEHIRA Kiyoshi KOBAYASHI Yoshitsugu YASUI Masato TANAKA Ryutaro SUZUKI Hideyuki SHINONAGA Nobuyuki KAWAI
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/11/01 Vol. E92-B No. 11 pp. 3290-3299 Type of Manuscript: INVITED PAPER (Special Section on Satellite Communication Technologies in Conjunction with Main Topics of JC-SAT2008) Category: Keyword: satellite communications, R&D, Japan,
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Interference Analysis from Impulse Radio UWB Systems Using Simple Signal Models Yasuo SUZUKI Ichihiko TOYODA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2005/11/01 Vol. E88-A No. 11 pp. 3092-3099 Type of Manuscript: Special Section PAPER (Special Section on Wide Band Systems) Category: Keyword: UWB, impulse radio, interference, Dirac delta function, kurtosis, Gaussian noise,
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Implementation and Performance Evaluation of Simple SDM-COFDM Prototype Using Propagation Coefficient Matrix Tracking for Fast Fading MIMO Channels Takatoshi SUGIYAMA Satoshi KUROSAKI Daisei UCHIDA Yusuke ASAI Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/01/01 Vol. E88-B No. 1 pp. 58-65 Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1) Category: Space Division Multiplexing Keyword: SDM, OFDM, MIMO, ZF, frequency utilization efficiency,
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25 GHz Band Active Integrated Antenna for Broadband Mobile Wireless Access Systems Tomohiro SEKI Fusao NUNO Takeo ATSUGI Masahiro UMEHIRA Junji SATO Takashi ENOKI
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2003/08/01 Vol. E86-C No. 8 pp. 1520-1526 Type of Manuscript: Special Section PAPER (Special Issue on Microwave and Millimeter Wave Technology) Category: Keyword: active integrated antenna, MSL/slot transition, spatial power combining schemes, broadband mobile wireless access, quasi-millimeter and millimeter-wave frequency band,
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A SDM-COFDM Scheme Employing a Simple Feed-Forward Inter-Channel Interference Canceller for MIMO Based Broadband Wireless LANs Satoshi KUROSAKI Yusuke ASAI Takatoshi SUGIYAMA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2003/01/01 Vol. E86-B No. 1 pp. 283-290 Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications) Category: Keyword: SDM-COFDM, MIMO, propagation matrix, likelihood-weighting, soft decision Viterbi decoding,
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OFDM/CDMA Technologies for Future Broadband Mobile Communication Systems Masahiro UMEHIRA Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2002/12/01 Vol. E85-A No. 12 pp. 2804-2812 Type of Manuscript: INVITED PAPER (Special Section on Spread Spectrum Techniques and Applications) Category: Keyword: CDMA, OFDM, SDM, MIMO, link adaptation,
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Software Defined Radio Prototype for PHS and IEEE 802.11 Wireless LAN Hiroyuki SHIBA Takashi SHONO Yushi SHIRATO Ichihiko TOYODA Kazuhiro UEHARA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2002/12/01 Vol. E85-B No. 12 pp. 2694-2702 Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio Technology and Its Applications) Category: Keyword: software defined radio (SDR), PHS, wireless LAN, multiprocessor architecture, over-the-air download,
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PRIME ARQ: A Novel ARQ Scheme for High-Speed Wireless ATM Atsushi OHTA Masafumi YOSHIOKA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2001/03/01 Vol. E84-B No. 3 pp. 474-483 Type of Manuscript: Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21^st Century) Category: Keyword: ARQ, wireless ATM, quality of service (QoS), selective repeat ARQ, error compensation,
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A Path Loss Model in Residential Areas Based on Measurement Studies Using a 5.2-GHz/2.2-GHz Dual Band Antenna Naoki KITA Shuta UWANO Akio SATO Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2001/03/01 Vol. E84-B No. 3 pp. 368-376 Type of Manuscript: Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21^st Century) Category: Keyword: 2.2 GHz, 5.2 GHz, 5.2-GHz/2.2-GHz dual band antenna, path loss, residential areas,
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FOREWORD Susumu YOSHIDA Fumiyuki ADACHI Jun HORIKOSHI Masahiro UMEHIRA Shingo OHMORI Yasutaka OGAWA Takahiko OGINO Tadashi FUJINO Yukitsuna FURUYA Koichi HONMA Yasushi YAMAO Yoshihide YAMADA Fumio WATANABE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2001/03/01 Vol. E84-B No. 3 pp. 355-358 Type of Manuscript: FOREWORD Category: Keyword:
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Design and Performance of ATM Wireless Access Prototype Hideaki MATSUE Masahiro UMEHIRA Takehiro MURASE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2000/08/25 Vol. E83-B No. 8 pp. 1731-1739 Type of Manuscript: Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications) Category: Keyword: wireless, access, ATM, multimedia, AWA, portable terminal,
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Linearized Constant Peak-Power Coded OFDM Transmission for Broadband Wireless Access Systems Shuta UWANO Yoichi MATSUMOTO Masato MIZOGUCHI Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1999/12/25 Vol. E82-B No. 12 pp. 1932-1938 Type of Manuscript: Special Section PAPER (Special Issue on Multimedia Mobile Communication Systems) Category: Keyword: OFDM, PAPR, nonlinear distortion, predistorter, out-of-band emission,
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A Novel FEC Scheme for Differentially Detected QPSK Signals in Mobile Computing Using High-Speed Wireless Access Takatoshi SUGIYAMA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1997/08/25 Vol. E80-B No. 8 pp. 1153-1159 Type of Manuscript: Special Section PAPER (Special Issue on Mobile Computing) Category: Keyword: mobile computing, high-speed wireless access, differential detection, nonredundant error correction, double symbol error, parallel encoding random FEC, rician fading,
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Dynamic Time-Slot Assignment Schemes for TDMA-Based Wireless ATM Makoto UMEUCHI Atsushi OHTA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1997/08/25 Vol. E80-B No. 8 pp. 1182-1191 Type of Manuscript: Special Section PAPER (Special Issue on Mobile Computing) Category: Keyword: ATM, wireless access, TDMA, time-slot assignment,
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New DQPSK Simultaneous Carrier and Bit-Timing Recovery Coherent Demodulator for Wireless Broadband Communication Systems Yoichi MATSUMOTO Takeyuki NAGURA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1997/08/25 Vol. E80-B No. 8 pp. 1145-1152 Type of Manuscript: Special Section PAPER (Special Issue on Mobile Computing) Category: Keyword: coherent demodulator, carrier recovery, bit-timing recovery, DQPSK, broadband communication,
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Design and Performance of a New OQPSK Coherent Demodulator Using an Advanced Simultaneous Carrier and Bit-Timing Recovery SchemeApplication to Wireless ATM Systems Yoichi MATSUMOTO Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1997/07/25 Vol. E80-A No. 7 pp. 1175-1182 Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Network) Category: Keyword: coherent detection, carrier recover, bit-timing recovery, OQPSK, wireless ATM,
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A New AFC Circuit Employing Double-Product Type Frequency Discriminator in Very-Low CNR Environments Nobuaki MOCHIZUKI Takatoshi SUGIYAMA Masahiro UMEHIRA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1997/01/25 Vol. E80-B No. 1 pp. 25-32 Type of Manuscript: Special Section PAPER (Special Issue on Advances in Satellite Communications toward Multimedia Era) Category: Modem and Coding Keyword: multimedia satellite communication, high coding gain FEC, very-low CNR environments, AFC, double-product type frequency discriminator, click noise,
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Reverse Modulation Carrier Recovery for Offset QPSK Burst Signals Masahiro UMEHIRA Shuzo KATO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1995/04/25 Vol. E78-B No. 4 pp. 616-624 Type of Manuscript: PAPER Category: Satellite Communication Keyword: satellite communication, offset QPSK, carrier recovery, reverse modulation, burst,
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