IEICE Trans

Takeshi ONIZAWA

Simple Weight Calculation Methods for Millimeter Wave Band Massive Antenna Array in Direct Wave Dominant Environment Mizuki SUGA Yushi SHIRATO Naoki KITA Takeshi ONIZAWA
Publication: Publication Date: 2021/07/01 Vol. E104-B No. 7 pp. 865-872 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: millimeter wave, massive antenna array, beamforming,
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Extension of ITU-R Site-General Path Loss Model in Urban Areas Based on Measurements from 2 to 66GHz Bands Motoharu SASAKI Mitsuki NAKAMURA Nobuaki KUNO Wataru YAMADA Naoki KITA Takeshi ONIZAWA Yasushi TAKATORI Hiroyuki NAKAMURA Minoru INOMATA Koshiro KITAO Tetsuro IMAI
Publication: Publication Date: 2021/07/01 Vol. E104-B No. 7 pp. 849-857 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: 5G, propagation, path loss model, UMa, IMT-2020, Rep. ITU-R M.2412,
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Comprehensive Feasibility Study on Direct Spectrum Division Transmission over Multiple Satellite Transponders Fumihiro YAMASHITA Daisuke GOTO Yasuyoshi KOJIMA Jun-ichi ABE Takeshi ONIZAWA
Publication: Publication Date: 2021/04/01 Vol. E104-B No. 4 pp. 446-454 Type of Manuscript: PAPER Category: Satellite Communications Keyword: satellite communications, direct spectrum division transmission, satellite transponders, auto gain control,
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Path Loss Model in Crowded Outdoor Environments Considering Multiple Human Body Shadowing of Multipath at 4.7GHz and 26.4GHz Mitsuki NAKAMURA Motoharu SASAKI Wataru YAMADA Naoki KITA Takeshi ONIZAWA Yasushi TAKATORI Masashi NAKATSUGAWA Minoru INOMATA Koshiro KITAO Tetsuro IMAI
Publication: Publication Date: 2019/08/01 Vol. E102-B No. 8 pp. 1676-1688 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: path loss model, human body shadowing, human blockage, crowded environment,
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Experimental Verification of 1-Tap Time Domain Beamforming for P-MP Relay System via 75 GHz Band Measured CSI Mizuki SUGA Atsushi OHTA Kazuto GOTO Takahiro TSUCHIYA Nobuaki OTSUKI Yushi SHIRATO Naoki KITA Takeshi ONIZAWA
Publication: Publication Date: 2019/08/01 Vol. E102-B No. 8 pp. 1751-1762 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: massive MIMO, 5G, millimeter waveband, time domain beamforming, channel measurement,
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Path Loss Model Considering Blockage Effects of Traffic Signs Up to 40GHz in Urban Microcell Environments Motoharu SASAKI Minoru INOMATA Wataru YAMADA Naoki KITA Takeshi ONIZAWA Masashi NAKATSUGAWA Koshiro KITAO Tetsuro IMAI
Publication: Publication Date: 2018/08/01 Vol. E101-B No. 8 pp. 1891-1902 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: 5G, propagation, path loss, high frequency, blockage, urban, microcell,
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Frequency Dependency of Path Loss Between Different Floors in An Indoor Office Environment at UHF and SHF Bands Motoharu SASAKI Minoru INOMATA Wataru YAMADA Naoki KITA Takeshi ONIZAWA Masashi NAKATSUGAWA Koshiro KITAO Tetsuro IMAI
Publication: Publication Date: 2018/02/01 Vol. E101-B No. 2 pp. 373-382 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2016) Category: Propagation Keyword: propagation, 5G, millimeter wave, UHF, SHF, high frequency bands, indoor office, floor penetration loss,
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Path Loss Model for Outdoor-to-Indoor Corridor Up to 40GHz Band in Microcell Environments Minoru INOMATA Motoharu SASAKI Wataru YAMADA Takeshi ONIZAWA Masashi NAKATSUGAWA Nobutaka OMAKI Koshiro KITAO Tetsuro IMAI Yukihiko OKUMURA
Publication: Publication Date: 2017/02/01 Vol. E100-B No. 2 pp. 242-251 Type of Manuscript: Special Section PAPER (Special Section on Antenna and Propagation Technologies Contributing to Realization of Next Generation Wireless Systems) Category: Keyword: propagation, 5G, outdoor-to-indoor path loss model, millimeter wave, high frequency bands, microcell environments,
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Frame Collision Reduction Method Employing Adaptive Transmission Control for IEEE802.11 Wireless LAN System Akira KISHIDA Masashi IWABUCHI Toshiyuki SHINTAKU Takeshi ONIZAWA Tetsu SAKATA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/09/01 Vol. E97-B No. 9 pp. 1790-1799 Type of Manuscript: Special Section PAPER (Special Section on Ambient Intelligence and Sensor Networks) Category: Keyword: CSMA/CA, IEEE802.11, collision reduction, dense, IFS,
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A New Simple Packet Combining Scheme Employing Maximum Likelihood Detection for MIMO-OFDM Transmission in Relay Channels Takeshi ONIZAWA Hiroki SHIBAYAMA Masashi IWABUCHI Akira KISHIDA Makoto UMEUCHI Tetsu SAKATA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/05/01 Vol. E97-B No. 5 pp. 1094-1102 Type of Manuscript: PAPER Category: Terrestrial Wireless Communication/Broadcasting Technologies Keyword: relay channel, decode-and-forward, packet combining, cyclic shift delay, MIMO-OFDM, MLD,
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A New Ordered Decision Feedback Equalization Algorithm for Spatial Multiplexing Systems in MIMO Channel Wenjie JIANG Yusuke ASAI Takeshi ONIZAWA Satoru AIKAWA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2007/11/01 Vol. E90-A No. 11 pp. 2546-2555 Type of Manuscript: PAPER Category: Communication Theory and Signals Keyword: BLAST, complexity reduction, ordering, sequential detector,
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Experimental Studies on a Decision-Feedback Channel Tracking Scheme Implemented in FPGA for MIMO-OFDM Systems Yusuke ASAI Wenjie JIANG Takeshi ONIZAWA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2007/11/01 Vol. E90-A No. 11 pp. 2423-2430 Type of Manuscript: Special Section PAPER (Special Section on Wideband Systems) Category: MIMO-OFDM Keyword: MIMO, OFDM, channel tracking, channel estimation, Doppler shift, IEEE 802.11n, wireless LAN, frame aggregation,
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A Simple and Feasible Decision-Feedback Channel Tracking Scheme for MIMO-OFDM Systems Yusuke ASAI Wenjie JIANG Takeshi ONIZAWA Atsushi OHTA Satoru AIKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/05/01 Vol. E90-B No. 5 pp. 1052-1060 Type of Manuscript: Special Section PAPER (Special Section on Advanced Transfer Technologies for the Next Generation Network) Category: Keyword: MIMO, OFDM, channel tracking, channel estimation, Doppler frequency, IEEE 802.11n, wireless LAN, frame aggregation,
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A Synchronization Scheme for Packet Mode MIMO-OFDM Signals in Wireless LAN Takeshi ONIZAWA Takafumi FUJITA Yusuke ASAI Daisei UCHIDA Atsushi OHTA Satoru AIKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/01/01 Vol. E90-B No. 1 pp. 92-104 Type of Manuscript: PAPER Category: Terrestrial Radio Communications Keyword: wireless LAN, MIMO, OFDM, packet mode, synchronization,
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FPGA Implementation of Eigenbeam MIMO-OFDM for Wireless LAN and Its Experimental Performance Takeshi ONIZAWA Atsushi OHTA Yusuke ASAI Satoru AIKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2006/12/01 Vol. E89-B No. 12 pp. 3233-3241 Type of Manuscript: Special Section PAPER (Special Section on Software Defined Radio Technology and Its Applications) Category: Keyword: software-defined radio, field programmable gate array, MIMO-OFDM, eigenbeam, wireless LAN,
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A Simplified Maximum Likelihood Detector for OFDM-SDM Systems in Wireless LAN Wenjie JIANG Takeshi ONIZAWA Atsushi OHTA Satoru AIKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/06/01 Vol. E88-B No. 6 pp. 2427-2437 Type of Manuscript: Special Section PAPER (Special Section on 2004 International Symposium on Antennas and Propagation) Category: Keyword: OFDM-SDM, MLD, ZF, complexity reduction, WLAN,
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A Reduced-Complexity Signal Detection Scheme Employing ZF and K-Best Algorithms for OFDM/SDM Takafumi FUJITA Atsushi OHTA Takeshi ONIZAWA Takatoshi SUGIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/01/01 Vol. E88-B No. 1 pp. 66-75 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: OFDM, SDM, MIMO, MLD, Zero-Forcing, K-best, M-algorithm, IEEE 802.11a,
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A New Very High-Rate Wireless LAN System Employing OFDM and MC/CDMA Signals Takeshi ONIZAWA Takafumi FUJITA Tetsu SAKATA Masahiro MORIKURA Satoru AIKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2004/05/01 Vol. E87-B No. 5 pp. 1227-1234 Type of Manuscript: Special Section PAPER (Special Section on Mobile Multimedia Communications) Category: Wireless LAN Keyword: wireless LAN, multiple-cell environment, universal frequency reuse, OFDM, MC/CDMA, fallback,
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A Scheme to Evaluate Cell Throughput of Multi-Rate Wireless LAN Systems with CSMA/CA Takafumi FUJITA Takeshi ONIZAWA Satoru HORI Atsushi OHTA Satoru AIKAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2004/04/01 Vol. E87-B No. 4 pp. 880-890 Type of Manuscript: PAPER Category: Wireless Communication Technology Keyword: wireless LANs, OFDM, CSMA/CA, cell throughput, system capacity,
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A New Simple Adaptive Phase Tracking Scheme Employing Phase Noise Estimation for OFDM Signals Takeshi ONIZAWA Masato MIZOGUCHI Tetsu SAKATA Masahiro MORIKURA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2003/01/01 Vol. E86-B No. 1 pp. 247-256 Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications) Category: Keyword: wireless LAN, OFDM, phase tracking, residual carrier frequency error, phase noise,
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A Novel Channel Estimation Scheme Employing Adaptive Selection of Frequency-Domain Filters for OFDM Systems Takeshi ONIZAWA Masato MIZOGUCHI Masahiro MORIKURA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1999/12/25 Vol. E82-B No. 12 pp. 1923-1931 Type of Manuscript: Special Section PAPER (Special Issue on Multimedia Mobile Communication Systems) Category: Keyword: wireless LAN, OFDM, QAM, coherent detection, channel estimation, adaptive filter, bit shifter,
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A Novel Coherent Preambleless Demodulator Employing Sequential Processing for PSK Packet Signals--AFC and Carrier Recovery Circuits-- Takeshi ONIZAWA Kiyoshi KOBAYASHI Masahiro MORIKURA Toshiaki TANAKA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1999/03/25 Vol. E82-B No. 3 pp. 542-550 Type of Manuscript: PAPER Category: Mobile Communication Keyword: packet, AFC, preambleless, phase signals, sequential, carrier recovery, sample hold,
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A Fast Synchronization Scheme of OFDM Signals for High-Rate Wireless LAN Takeshi ONIZAWA Masato MIZOGUCHI Masahiro MORIKURA Toshiaki TANAKA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 1999/02/25 Vol. E82-B No. 2 pp. 455-463 Type of Manuscript: PAPER Category: Mobile Communication Keyword: wireless LAN, packet transmission, OFDM, multi-carrier modulation, AFC, symbol timing detection, carrier frequency error,
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The Spread Spectrum Code Hopping System Takeshi ONIZAWA Takaaki HASEGAWA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1995/07/25 Vol. E78-A No. 7 pp. 795-804 Type of Manuscript: Special Section PAPER (Special Section on Mobile Information Network) Category: Keyword: spread spectrum, code hopping, code interference, mobile, consumer,
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