IEICE Trans

Toshihiko NISHIMURA

Sub-Terahertz MIMO Spatial Multiplexing in Indoor Propagation Environments Yasutaka OGAWA Taichi UTSUNO Toshihiko NISHIMURA Takeo OHGANE Takanori SATO
Publication: Publication Date: 2022/10/01 Vol. E105-B No. 10 pp. 1130-1138 Type of Manuscript: INVITED PAPER (Special Section on Multidisciplinary and Innovative Key technologies in Advanced communication systems (MIKA)) Category: Keyword: 6G, sub-Terahertz band, hybrid MIMO system, spatial multiplexing, channel capacity, beam steering,
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Accuracy Improvement in DOA Estimation with Deep Learning Yuya KASE Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA Takanori SATO Yoshihisa KISHIYAMA
Publication: Publication Date: 2022/05/01 Vol. E105-B No. 5 pp. 588-599 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: DOA estimation, deep learning, machine learning,
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Radio Techniques Incorporating Sparse Modeling Toshihiko NISHIMURA Yasutaka OGAWA Takeo OHGANE Junichiro HAGIWARA
Publication: Publication Date: 2021/03/01 Vol. E104-A No. 3 pp. 591-603 Type of Manuscript: INVITED SURVEY PAPER Category: Digital Signal Processing Keyword: sparse modeling, compressed sensing, sparse Bayesian learning, DOA estimation, channel estimation,
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Fundamental Trial on DOA Estimation with Deep Learning Yuya KASE Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA Daisuke KITAYAMA Yoshihisa KISHIYAMA
Publication: Publication Date: 2020/10/01 Vol. E103-B No. 10 pp. 1127-1135 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: DOA estimation, deep learning, machine learning,
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Performance Evaluation of Beam Shapes in a Two-Step-Precoded Massive MIMO System Jumpei YAMAMOTO Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA Daiki TAKEDA Yoshihisa KISHIYAMA
Publication: Publication Date: 2020/06/01 Vol. E103-B No. 6 pp. 703-711 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: 5G, massive MIMO, higher frequency band, two-step beamforming,
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Serial and Parallel LLR Updates Using Damped LLR for LDPC Coded Massive MIMO Detection with Belief Propagation Shuhei TANNO Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA
Publication: Publication Date: 2017/08/01 Vol. E100-B No. 8 pp. 1277-1284 Type of Manuscript: Special Section PAPER (Special Section on Radio Access Technologies for 5G Mobile Communications System) Category: Wireless Communication Technologies Keyword: massive MIMO, belief propagation, LDPC code, factor graph, bipartite graph, tripartite graph,
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Node Selection for Belief Propagation Based Channel Equalization Mitsuyoshi HAGIWARA Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA
Publication: Publication Date: 2017/08/01 Vol. E100-B No. 8 pp. 1285-1292 Type of Manuscript: Special Section PAPER (Special Section on Radio Access Technologies for 5G Mobile Communications System) Category: Wireless Communication Technologies Keyword: belief propagation algorithm, log-likelihood ratio, interference canceller, equalization,
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A Throughput Evaluation of an Over-Distributed Antenna System with Limited Pilot Resources Yuki NAKANISHI Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA Yusuke OHWATARI Yoshihisa KISHIYAMA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2015/08/01 Vol. E98-B No. 8 pp. 1465-1473 Type of Manuscript: Special Section PAPER (Special Section on 5G Radio Access Networks―Part I: Radio Access Technologies and System Design) Category: Keyword: distributed antenna system, multiuser MIMO system, throughput, pilot resource,
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Channel Prediction Techniques for a Multi-User MIMO System in Time-Varying Environments Kanako YAMAGUCHI Huu Phu BUI Yasutaka OGAWA Toshihiko NISHIMURA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/12/01 Vol. E97-B No. 12 pp. 2747-2755 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: channel prediction, multi-user MIMO system, block diagonalization, eigenbeam-space division multiplexing, time-varying environments, AR model, lagrange extrapolation,
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DOA Estimation for Multi-Band Signal Sources Using Compressed Sensing Techniques with Khatri-Rao Processing Tsubasa TERADA Toshihiko NISHIMURA Yasutaka OGAWA Takeo OHGANE Hiroyoshi YAMADA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2014/10/01 Vol. E97-B No. 10 pp. 2110-2117 Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Measurement and Design Techniques on Antennas, Propagation and Wireless Systems) Category: Keyword: DOA estimation, multi-band signal, compressed sensing, Khatri-Rao product, sparse signal reconstruction,
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Behavior of a Multi-User MIMO System in Time-Varying Environments Yasutaka OGAWA Kanako YAMAGUCHI Huu Phu BUI Toshihiko NISHIMURA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2013/10/01 Vol. E96-B No. 10 pp. 2364-2371 Type of Manuscript: INVITED PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012) Category: Keyword: multi-user MIMO system, channel state information, time-varying environment, channel prediction, autoregressive (AR) model-based prediction,
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Impact on Inter-Cell Interference of Reference Signal for Interference Rejection Combining Receiver in LTE-Advanced Downlink Yousuke SANO Yusuke OHWATARI Nobuhiko MIKI Yuta SAGAE Yukihiko OKUMURA Yasutaka OGAWA Takeo OHGANE Toshihiko NISHIMURA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/12/01 Vol. E95-B No. 12 pp. 3728-3738 Type of Manuscript: Special Section PAPER (Special Section on Coding and Coding Theory-Based Signal Processing for Wireless Communications) Category: Keyword: LTE-Advanced, interference rejection combining, inter-cell interference, reference signal, turbo equalizer,
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Time-Reversal MUSIC Imaging with Time-Domain Gating Technique Heedong CHOI Yasutaka OGAWA Toshihiko NISHIMURA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2012/07/01 Vol. E95-B No. 7 pp. 2377-2385 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: time-reversal (TR) technique, TR-MUSIC imaging, ultra wideband (UWB), gating technique,
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Performance Evaluation of MIMO-UWB Systems Using Measured Propagation Data and Proposal of Timing Control Scheme in LOS Environments Masaki TAKANASHI Toshihiko NISHIMURA Yasutaka OGAWA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/08/01 Vol. E92-B No. 8 pp. 2698-2707 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: MIMO-UWB, LOS (line-of-sight) environment, frequency-domain equalization, transmit and receive timing control,
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Performance Evaluation of Multiuser MIMO E-SDM Systems in Time-Varying Fading Environments Huu Phu BUI Yasutaka OGAWA Toshihiko NISHIMURA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/07/01 Vol. E92-B No. 7 pp. 2374-2388 Type of Manuscript: PAPER Category: Fundamental Theories for Communications Keyword: multiuser MIMO systems, eigenbeam-space division multiplexing E-SDM, channel extrapolation, time-varying fading environments,
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Subblock Processing for Frequency-Domain Turbo Equalization under Fast Fading Environments Keiichi KAMBARA Hiroshi NISHIMOTO Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2009/05/01 Vol. E92-B No. 5 pp. 1466-1474 Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution) Category: Keyword: fast fading, single carrier transmission, SC/MMSE-FDTE, unique word, subblock processing,
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Precise DOA Estimation Using SAGE Algorithm with a Cylindrical Array Masaki TAKANASHI Toshihiko NISHIMURA Yasutaka OGAWA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2008/11/01 Vol. E91-B No. 11 pp. 3784-3787 Type of Manuscript: LETTER Category: Antennas and Propagation Keyword: DOA estimation, cylindrical array, coherent signals, SAGE algorithm,
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Soft Decision Directed Channel Estimation with Interference Cancellation for a MIMO System Using Iterative Equalization and Decoding Masatsugu HIGASHINAKA Hiroshi KUBO Akihiro OKAZAKI Yasutaka OGAWA Takeo OHGANE Toshihiko NISHIMURA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2008/10/01 Vol. E91-A No. 10 pp. 2787-2797 Type of Manuscript: Special Section PAPER (Special Section on Information Theory and Its Applications) Category: Communication Theory Keyword: MIMO, frequency domain equalization, iterative equalization, channel estimation, interference cancellation,
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Performance of MIMO E-SDM Systems Using Channel Prediction in Actual Time-Varying Indoor Fading Environments Huu Phu BUI Hiroshi NISHIMOTO Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2008/06/01 Vol. E91-B No. 6 pp. 1713-1723 Type of Manuscript: Special Section PAPER (Special Section on 2007 International Symposium on Antennas and Propagation) Category: Smart Antennas & MIMO Keyword: MIMO systems, eigenbeam-space division multiplexing (E-SDM), transmit beamforming, channel prediction, time-varying fading environments,
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Measurement-Based Performance Evaluation of Coded MIMO-OFDM Spatial Multiplexing with MMSE Spatial Filtering in an Indoor Line-of-Sight Environment Hiroshi NISHIMOTO Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2008/05/01 Vol. E91-B No. 5 pp. 1648-1652 Type of Manuscript: LETTER Category: Wireless Communication Technologies Keyword: MIMO, OFDM, spatial multiplexing, MMSE spatial filtering, indoor channel measurement, line-of-sight environments, space-frequency diversity,
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Studies on an Iterative Frequency Domain Channel Estimation Technique for MIMO-UWB Communications Masaki TAKANASHI Yasutaka OGAWA Toshihiko NISHIMURA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2008/04/01 Vol. E91-B No. 4 pp. 1084-1094 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: MIMO-UWB, MMSE-FDE, least square channel estimation, iterative frequency domain channel estimation,
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Arrangement of Scattering Points in Jakes' Model for i.i.d. Time-Varying MIMO Fading Hiroshi NISHIMOTO Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/11/01 Vol. E90-B No. 11 pp. 3311-3314 Type of Manuscript: LETTER Category: Antennas and Propagation Keyword: MIMO, time-varying Rayleigh fading, Jakes' model, scattering points,
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Pseudo Eigenbeam-Space Division Multiplexing (PE-SDM) in Frequency-Selective MIMO Channels Hiroshi NISHIMOTO Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/11/01 Vol. E90-B No. 11 pp. 3197-3207 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: MIMO system, frequency-selective fading, transmit beamforming, effective channel, frequency continuity, singular value decomposition (SVD), pseudo eigenvector, pseudo eigenbeam-space division multiplexing (PE-SDM), channel estimation,
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MIMO E-SDM Transmission Performance in an Actual Indoor Environment Hiroshi NISHIMOTO Yasutaka OGAWA Toshihiko NISHIMURA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2007/06/01 Vol. E90-B No. 6 pp. 1474-1486 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: MIMO, eigenbeam space division multiplexing, array element pattern, eigenvalue distribution, channel capacity, bit error rate,
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Channel Extrapolation Techniques for E-SDM System in Time-Varying Fading Environments Huu Phu BUI Yasutaka OGAWA Takeo OHGANE Toshihiko NISHIMURA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2006/11/01 Vol. E89-B No. 11 pp. 3083-3092 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: multiple-input multiple-output (MIMO) system, eigenbeam space division multiplexing (E-SDM), time-varying fading environment, maximum Doppler frequency estimation, channel extrapolation,
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Direction-of-Arrival Estimation of Coherent Signals Using a Cylindrical Array Masaki TAKANASHI Toshihiko NISHIMURA Yasutaka OGAWA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/06/01 Vol. E88-B No. 6 pp. 2588-2596 Type of Manuscript: PAPER Category: Antennas and Propagation Keyword: circular array, cylindrical array, UCA-Root MUSIC, superresolution technique, coherent signals,
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Applications of Space Division Multiplexing and Those Performance in a MIMO Channel Takeo OHGANE Toshihiko NISHIMURA Yasutaka OGAWA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/05/01 Vol. E88-B No. 5 pp. 1843-1851 Type of Manuscript: INVITED PAPER (Special Section on Recent Progress in Antennas and Propagation Researches--Selected Papers Translated from the IEICE Transactions on Communications (Japanese Edition)--) Category: Keyword: MIMO, spatial multiplexing, BLAST,
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Channel Estimation and Signal Detection for Space Division Multiplexing in a MIMO-OFDM System Yasutaka OGAWA Keisuke NISHIO Toshihiko NISHIMURA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2005/01/01 Vol. E88-B No. 1 pp. 10-18 Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1) Category: MIMO Keyword: orthogonal frequency division multiplexing (OFDM), multiple-input multiple-output (MIMO), space division multiplexing (SDM), channel estimation, condition number, ordered successive detection,
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A Study on an Antenna Selection Scheme for Space-Time Turbo Code for OFDM Systems Masayuki HOSHINO Mitsuru UESUGI Takeo OHGANE Yasutaka OGAWA Toshihiko NISHIMURA
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2003/12/01 Vol. E86-B No. 12 pp. 3476-3482 Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio Technology and Its Applications) Category: Keyword: Space-Time code, antenna selection, Turbo code,
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A Spatial Domain Interference Canceller Using a Multistage Adaptive Array with Precise Timing Estimation Toshihiko NISHIMURA Yasuhiko TANABE Takeo OHGANE Yasutaka OGAWA Yoshiharu DOI Jun KITAKADO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2001/07/01 Vol. E84-B No. 7 pp. 1735-1742 Type of Manuscript: Special Section PAPER (Special Issue on Adaptive Array Antenna Techniques for Advanced Wireless Communications) Category: Adaptive Algorithms and Experiments Keyword: SDMA, multistage interference canceller, adaptive array, FER, PHS,
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Space Domain Multistage Interference Canceller for SDMA Toshihiko NISHIMURA Takeo OHGANE Yasutaka OGAWA Yoshiharu DOI Jun KITAKADO
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2001/03/01 Vol. E84-B No. 3 pp. 377-382 Type of Manuscript: Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21^st Century) Category: Keyword: SDMA, multistage interference canceller, adaptive array, FER, PHS,
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Combining Techniques for Spatial-Domain Path-Diversity Using an Adaptive Array Kenzaburoh FUJISHIMA Yasuhiko TANABE Toshihiko NISHIMURA Yasutaka OGAWA Takeo OHGANE
Publication: IEICE TRANSACTIONS on Communications Publication Date: 2000/12/25 Vol. E83-B No. 12 pp. 2593-2599 Type of Manuscript: PAPER Category: Wireless Communication Technology Keyword: adaptive antenna, path-diversity, mobile communications, multipath propagation, maximal ratio combining,
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