Hidekazu MURATA


User Collaborated Reception of Spatially Multiplexed Signals: An Experimental Study in Group Mobility
Ilmiawan SHUBHI Yuji HAYASHI Hidekazu MURATA 
Publication:   
Publication Date: 2017/01/01
Vol. E100-A  No. 1  pp. 227-231
Type of Manuscript:  Special Section LETTER (Special Section on Wideband Systems)
Category: 
Keyword: 
collaborative interference cancellationfield experimentsMU-MIMOspatial multiplexing
 Summary | Full Text:PDF(3.6MB)

Radio Access Technologies for Fifth Generation Mobile Communications System: Review of Recent Research and Developments in Japan
Hidekazu MURATA Eiji OKAMOTO Manabu MIKAMI Akihiro OKAZAKI Satoshi SUYAMA Takamichi INOUE Jun MASHINO Tetsuya YAMAMOTO Makoto TAROMARU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/08/01
Vol. E99-B  No. 8  pp. 1638-1647
Type of Manuscript:  INVITED PAPER (Special Section on Advanced Information and Communication Technologies and Services in Conjunction with Main Topics of APCC2015)
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
fifth generation mobile communication systemshigher frequency bandmassive MIMOC-Plane/U-Plane splittingC-RAN
 Summary | Full Text:PDF(2.9MB)

An Error-Propagation Minimization Based Signal Selection Scheme for QRM-MLD
Ilmiawan SHUBHI Hidekazu MURATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/07/01
Vol. E99-B  No. 7  pp. 1566-1576
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
multi-user MIMOcollaborative interference cancellationsignal selectionQRM-MLD
 Summary | Full Text:PDF(3.5MB)

A Study on Dynamic Clustering for Large-Scale Multi-User MIMO Distributed Antenna Systems with Spatial Correlation
Ou ZHAO Hidekazu MURATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2016/04/01
Vol. E99-B  No. 4  pp. 928-938
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
dynamic clusteringmulti-user MIMOdistributed antenna systemsspatial correlationsum ratezero-forcing precoding
 Summary | Full Text:PDF(999.7KB)

FOREWORD
Hidekazu MURATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/09/01
Vol. E98-B  No. 9  pp. 1732-1732
Type of Manuscript:  FOREWORD
Category: 
Keyword: 
 Summary | Full Text:PDF(146.2KB)

An Iterative MIMO Receiver Employing Virtual Channels with a Turbo Decoder for OFDM Wireless Systems
Akihito TAYA Satoshi DENNO Koji YAMAMOTO Masahiro MORIKURA Daisuke UMEHARA Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/05/01
Vol. E98-B  No. 5  pp. 878-889
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
multiple-input multiple-outputvirtual channelsoft-input soft-outputlog likelihood ratioiterative scheme
 Summary | Full Text:PDF(1.5MB)

Sum-Rate Analysis for Centralized and Distributed Antenna Systems with Spatial Correlation and Inter-Cell Interference
Ou ZHAO Hidekazu MURATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/03/01
Vol. E98-B  No. 3  pp. 449-455
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
distributed antenna systemsspatial correlationspatially correlated shadowingcorrelated multi-path fadinginter-cell interferenceergodic sum-ratezero-forcing beamforming
 Summary | Full Text:PDF(776.7KB)

Experimental Evaluation of Low Complexity User Selection Schemes for Multi-User MIMO Systems
Satoshi NISHINO Hidekazu MURATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/02/01
Vol. E98-A  No. 2  pp. 606-610
Type of Manuscript:  Special Section LETTER (Special Section on Wideband Systems)
Category: 
Keyword: 
multi-user MIMOindoor experimentuser selection scheme
 Summary | Full Text:PDF(1.7MB)

Sum Rate Analysis of MU-MISO Systems with ZF Beamforming over Composite Fading Channels
Ou ZHAO Hidekazu MURATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/02/01
Vol. E98-A  No. 2  pp. 558-568
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
spatially correlated shadowingcorrelated rayleigh fadingsum ratezero-forcing beamformingMU-MISO
 Summary | Full Text:PDF(1.1MB)

Convex Approximated Weighted Sum-Rate Maximization for Multicell Multiuser OFDM
Mirza Golam KIBRIA Hidekazu MURATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/08/01
Vol. E97-A  No. 8  pp. 1800-1805
Type of Manuscript:  LETTER
Category: Numerical Analysis and Optimization
Keyword: 
coordinated downlink beamformingsum-rate maximizationconvex approximationmulticell MU-OFDM
 Summary | Full Text:PDF(386.4KB)

Performance of Partitioned Vector Quantization with Optimized Feedback Budget Allocation
Mirza Golam KIBRIA Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/06/01
Vol. E97-B  No. 6  pp. 1184-1194
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
partitioned vector quantizationfeedback budget optimizationmultiuser-MISONonlinear precoding
 Summary | Full Text:PDF(1.3MB)

An Efficient Algorithm for Weighted Sum-Rate Maximization in Multicell OFDMA Downlink
Mirza Golam KIBRIA Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/01/01
Vol. E97-A  No. 1  pp. 69-77
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: Resource Allocation
Keyword: 
weighted sum-rate maximizationcoordinated linear precodingconvex approximationsecond-order cone programming
 Summary | Full Text:PDF(873.3KB)

An Adaptive Fairness and Throughput Control Approach for Resource Scheduling in Multiuser Wireless Networks
Lin SHAN Sonia AISSA Hidekazu MURATA Susumu YOSHIDA Liang ZHAO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/02/01
Vol. E96-B  No. 2  pp. 561-568
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
multiuser diversitymultiuser schedulingproportional fairnessfairness indexadaptive fairnessthroughput control
 Summary | Full Text:PDF(1.8MB)

Software Radio-Based Distributed Multi-User MIMO Testbed: Towards Green Wireless Communications
Hidekazu MURATA Susumu YOSHIDA Koji YAMAMOTO Daisuke UMEHARA Satoshi DENNO Masahiro MORIKURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/01/01
Vol. E96-A  No. 1  pp. 247-254
Type of Manuscript:  INVITED PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
green wirelessmulti-user MIMOsoftware radiodistributed antenna systemfield experiment
 Summary | Full Text:PDF(2.8MB)

Opportunistic Scheduling for Hybrid Network Coding and Cooperative Relaying Techniques in Wireless Networks
Lin SHAN Hidekazu MURATA Sonia AISSA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/05/01
Vol. E95-B  No. 5  pp. 1751-1760
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
cooperative relayingnetwork codingopportunistic schedulingasymmetric traffic
 Summary | Full Text:PDF(753.9KB)

Evolutionary Game Based Access Control Protocol in Wireless Networks with Mobile Routers
Ippei AOKI Koji YAMAMOTO Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/08/01
Vol. E94-B  No. 8  pp. 2225-2234
Type of Manuscript:  Special Section PAPER (Special Section on Deployment and Operation of New Internet Technology: Challenges and Approaches)
Category: 
Keyword: 
mobile routerevolutionary game theorygame theoryCSMA/CA
 Summary | Full Text:PDF(701.6KB)

Resource Reduction Method for the LTE-Advanced Uplink ACK/NACK Signal and SR
Seigo NAKAO Kenji TAKAGI Masaru FUKUOKA Daichi IMAMURA Hidekazu MURATA Koji YAMAMOTO Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/01/01
Vol. E94-B  No. 1  pp. 364-367
Type of Manuscript:  LETTER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
LTE-Advancedspace orthogonal resource transmit diversityphase rotationACK/NACK signalscheduling request
 Summary | Full Text:PDF(280.4KB)

Potential Game Approach for Spectrum Sharing in Distributed Cognitive Radio Networks
I Wayan MUSTIKA Koji YAMAMOTO Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/12/01
Vol. E93-B  No. 12  pp. 3284-3292
Type of Manuscript:  Special Section PAPER (Special Section on Wireless Distributed Networks)
Category: 
Keyword: 
spectrum sharinginterference managementcognitive radiogame theorypotential game
 Summary | Full Text:PDF(780.5KB)

Impact and Use of the Asymmetric Property in Bi-directional Cooperative Relaying under Asymmetric Traffic Conditions
Takaaki SAEKI Koji YAMAMOTO Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/08/01
Vol. E93-B  No. 8  pp. 2126-2134
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
cooperative relayingasymmetric trafficoptimal relay positionopportunistic scheduling
 Summary | Full Text:PDF(827.8KB)

FPGA Implementation of STBC Based Cooperative Relaying System
Hidekazu MURATA Yuji OISHI Koji YAMAMOTO Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/08/01
Vol. E93-B  No. 8  pp. 1988-1992
Type of Manuscript:  Special Section PAPER (Special Section on Implementation, Experiments, and Practice for Ad Hoc and Mesh Networks)
Category: 
Keyword: 
multi-hop wireless networkscooperative relayinglaboratory experimentsFPGA implementation
 Summary | Full Text:PDF(924.8KB)

Cell Edge Capacity Improvement by Using Adaptive Base Station Cooperation in Cellular Networks with Fractional Frequency Reuse
Liang XU Koji YAMAMOTO Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/07/01
Vol. E93-B  No. 7  pp. 1912-1918
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
base station cooperationcell edgefractional frequency reuseinter-cell interference
 Summary | Full Text:PDF(1MB)

Channel-Gain-Based Transmission Scheduling for Cooperative Relaying
Naotaka SHIBATA Koji YAMAMOTO Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/03/01
Vol. E93-B  No. 3  pp. 776-779
Type of Manuscript:  LETTER
Category: Terrestrial Radio Communications
Keyword: 
cooperative relayingtransmission schedulingspectral efficiency
 Summary | Full Text:PDF(228.5KB)

Capacity Analysis of Cooperative Relaying Networks with Adaptive Relaying Scheme Selection
Kunihiko TESHIMA Koji YAMAMOTO Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/12/01
Vol. E92-B  No. 12  pp. 3744-3752
Type of Manuscript:  PAPER
Category: Network
Keyword: 
cooperative relayingmultihopspectral efficiencyadaptive controlgame theory
 Summary | Full Text:PDF(529KB)

Performance Improvement of Wireless Mesh Networks by Using a Combination of Channel-Bonding and Multi-Channel Techniques
Liang XU Koji YAMAMOTO Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/10/01
Vol. E91-B  No. 10  pp. 3103-3112
Type of Manuscript:  Special Section PAPER (Special Section on Next-Generation Mobile Multimedia Communications)
Category: 
Keyword: 
IEEE 802.11nchannel-bondingmulti-channelCSMA/CAwireless mesh network
 Summary | Full Text:PDF(554.4KB)

Spectral Efficiency of Fundamental Cooperative Relaying in Interference-Limited Environments
Koji YAMAMOTO Hirofumi MARUYAMA Takashi SHIMIZU Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/08/01
Vol. E91-B  No. 8  pp. 2674-2682
Type of Manuscript:  PAPER
Category: Terrestrial Radio Communications
Keyword: 
cooperative relayingmultihoparea spectral efficiencybandwidth efficiency
 Summary | Full Text:PDF(681.7KB)

Interference Information Based Power Control for Cognitive Radio with Multi-Hop Cooperative Sensing
Youngjin YU Hidekazu MURATA Koji YAMAMOTO  Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/01/01
Vol. E91-B  No. 1  pp. 70-76
Type of Manuscript:  Special Section PAPER (Special Section on Cognitive Radio and Spectrum Sharing Technology)
Category: Spectrum Sensing
Keyword: 
cognitive radiocooperative sensingshadowinginterference informationmulti-hop transmission
 Summary | Full Text:PDF(692.1KB)

Prototype Implementation of Real-Time ML Detectors for Spatial Multiplexing Transmission
Toshiaki KOIKE Yukinaga SEKI Hidekazu MURATA Susumu YOSHIDA Kiyomichi ARAKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/03/01
Vol. E89-B  No. 3  pp. 845-852
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
multiple-input multiple-output (MIMO)spatial multiplexingmaximum-likelihood detection (MLD)field programmable gate array (FPGA)real-time MIMO detector
 Summary | Full Text:PDF(770.2KB)

Experimental Evaluation of Spatial Interleaving in Trellis-Coded MIMO Transmission
Toshiaki KOIKE Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2006/03/01
Vol. E89-B  No. 3  pp. 985-989
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
TCMMLSEMIMOlaboratory experiment
 Summary | Full Text:PDF(402.5KB)

Genetic Design Method for Near-Optimal Training Sequences in Wideband Spatial Multiplexing Systems
Toshiaki KOIKE Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/08/01
Vol. E88-B  No. 8  pp. 3488-3492
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
channel estimationmultiple-antenna systemgenetic algorithms (GA)
 Summary | Full Text:PDF(298.1KB)

Evaluation of HARQ Scheme with Antenna Permutation and TCM Reassignment for Space-Time Transmission in Slow Nakagami-Rice Fading MIMO Channel
Toshiaki KOIKE Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/06/01
Vol. E87-B  No. 6  pp. 1487-1494
Type of Manuscript:  PAPER
Category: Wireless Communication Technology
Keyword: 
hybrid ARQmultiple antenna techniquespatial multiplexingtrellis-coded modulationspace-time transmissionMIMO channelconstellation diversity
 Summary | Full Text:PDF(551.7KB)

Uniquely Decodable Code for Two-User Multiple-Access Channel Using Complex-Valued Signal
Yuan LI Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 581-588
Type of Manuscript:  PAPER
Category: Fundamental Theories
Keyword: 
multiple-accessuniquely decodable codecochannel interference (CCI)trellis-coded modulation
 Summary | Full Text:PDF(557.4KB)

Dynamic Channel Assignment Algorithms with Adaptive Array Antennas in Cellular Systems
Lan CHEN Hidekazu MURATA Susumu YOSHIDA Shouichi HIROSE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/07/25
Vol. E82-A  No. 7  pp. 1202-1209
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
dynamic channel assignmentcellular systemadaptive array antennablocking probabilityforced termination probability
 Summary | Full Text:PDF(943.3KB)

A Dynamic Timeslot Assignment Algorithm for Asymmetric Traffic in Multimedia TDMA/TDD Mobile Radio
Lan CHEN Susumu YOSHIDA Hidekazu MURATA Shouichi HIROSE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/07/25
Vol. E81-A  No. 7  pp. 1358-1366
Type of Manuscript:  Special Section PAPER (Special Section on Fundamentals of Multi-dimensional Mobile Information Network)
Category: 
Keyword: 
mobile communicationmultimediadynamic timeslot assignmentblocking probabilityforced termination probabilitytransmission delay
 Summary | Full Text:PDF(710KB)

Theoretical Analysis of BER Performance Bounds of Trellis-Coded Co-channel Interference Canceller
Yuan LI Hidekazu MURATA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/04/25
Vol. E81-B  No. 4  pp. 754-761
Type of Manuscript:  PAPER
Category: Mobile Communication
Keyword: 
mobile radio communicationco-channel interferencemulti-user detectioninterference cancellertrellis-coded modulation
 Summary | Full Text:PDF(681.8KB)

A Dynamic Channel Assignment Algorithm for Voice and Data Integrated TDMA Mobile Radio
Lan CHEN Susumu YOSHIDA Hidekazu MURATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/07/25
Vol. E80-A  No. 7  pp. 1204-1210
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Network)
Category: 
Keyword: 
mobile communicationintegrated trafficdynamic channel assignmentblocking probabilityforced termination probability
 Summary | Full Text:PDF(561.6KB)

Computational Complexity Reduction of Trellis-Coded Co-channel Interference Canceller
Hidekazu MURATA Atsushi FUJIWARA Susumu YOSHIDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/03/25
Vol. E79-B  No. 3  pp. 342-352
Type of Manuscript:  Special Section PAPER (Special Issue on Advanced Adaptive Radio Communication Technologies)
Category: Modulation, Demodulation
Keyword: 
digital cellular radioco-channel interferenceinterference cancellertrellis coded modulation
 Summary | Full Text:PDF(803.2KB)

Adaptive Receiver Consisting of MLSE and Sector-Antenna Diversity for Mobile Radio Communications
Hidekazu MURATA Susumu YOSHIDA Tsutomu TAKEUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1994/05/25
Vol. E77-B  No. 5  pp. 573-579
Type of Manuscript:  Special Section PAPER (Special Issue on Adaptive Signal Processing in Mobile Radio Communications)
Category: 
Keyword: 
mobile radio communicationdiversity receptionadaptive equalizermultipath propagationco-channel interference
 Summary | Full Text:PDF(547KB)