Hidekazu TAOKA


Performance of Outer-Loop Control for Adaptive Modulation and Coding Based on Mutual Information in OFDM MIMO SDM
Teppei EBIHARA Yasuhiro KUGE Hidekazu TAOKA Nobuhiko MIKI Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/08/01
Vol. E98-B  No. 8  pp. 1506-1517
Type of Manuscript:  Special Section PAPER (Special Section on 5G Radio Access Networks―Part I: Radio Access Technologies and System Design)
Category: 
Keyword: 
OFDMMIMOAMCmutual informationchannel coding
 Summary | Full Text:PDF

Performance of Open-Loop Transmit Diversity with Intra-Subframe Frequency Hopping and Iterative Decision-Feedback Channel Estimation for DFT-Precoded OFDMA
Lianjun DENG Teruo KAWAMURA Hidekazu TAOKA Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/08/01
Vol. E98-B  No. 8  pp. 1492-1505
Type of Manuscript:  Special Section PAPER (Special Section on 5G Radio Access Networks―Part I: Radio Access Technologies and System Design)
Category: 
Keyword: 
transmit diversityspace-time block codesingle-carrier FDMAchannel estimationturbo frequency domain equalizer
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Comparative Study of Open-Loop Transmit Diversity Schemes with Four Antennas in DFT-Precoded OFDMA Using Turbo FDE and Iterative Channel Estimation
Lianjun DENG Teruo KAWAMURA Hidekazu TAOKA Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/06/01
Vol. E98-B  No. 6  pp. 1065-1077
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
transmit diversityspace-time block codesingle-carrier FDMAchannel estimationturbo frequency domain equalizer
 Summary | Full Text:PDF

Investigation on Frequency Diversity Effects of Various Transmission Schemes Using Frequency Domain Equalizer for DFT-Precoded OFDMA
Lianjun DENG Teruo KAWAMURA Hidekazu TAOKA Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2014/01/01
Vol. E97-A  No. 1  pp. 30-39
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: Foundations
Keyword: 
single-carrier FDMAfrequency diversityfrequency domain equalizerfrequency mean square covarianceDFT-precoded OFDMA
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Experiments on Asymmetric Carrier Aggregation Associated with Control Signaling Reception Quality in LTE-Advanced
Keisuke SAITO Yuichi KAKISHIMA Teruo KAWAMURA Yoshihisa KISHIYAMA Hidekazu TAOKA Hidehiro ANDOH 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/11/01
Vol. E96-A  No. 11  pp. 2106-2113
Type of Manuscript:  Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category: Communication Theory and Signals
Keyword: 
LTE-Advancedasymmetric carrier aggregationcontrol signalingexperiment
 Summary | Full Text:PDF

Effect of Intra-Subframe Frequency Hopping on Codebook Based Closed-Loop Transmit Diversity for DFT-Precoded OFDMA
Lianjun DENG Teruo KAWAMURA Hidekazu TAOKA Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/12/01
Vol. E95-B  No. 12  pp. 3699-3707
Type of Manuscript:  Special Section PAPER (Special Section on Coding and Coding Theory-Based Signal Processing for Wireless Communications)
Category: 
Keyword: 
transmit diversityprecodingfrequency hoppingfrequency-selective fading
 Summary | Full Text:PDF

Comparative Study of Open-Loop Transmit Diversity Schemes for DFT-Precoded OFDMA in Frequency-Selective Fading Channels
Lianjun DENG Teruo KAWAMURA Hidekazu TAOKA Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/12/01
Vol. E95-B  No. 12  pp. 3708-3718
Type of Manuscript:  Special Section PAPER (Special Section on Coding and Coding Theory-Based Signal Processing for Wireless Communications)
Category: 
Keyword: 
transmit diversityspace-time block codespace-frequency block codesingle-carrier FDMA
 Summary | Full Text:PDF

Performance of Interference Rejection Combining Receiver to Suppress Inter-Cell Interference in LTE-Advanced Downlink
Yusuke OHWATARI Nobuhiko MIKI Takahiro ASAI Tetsushi ABE Hidekazu TAOKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/12/01
Vol. E94-B  No. 12  pp. 3362-3369
Type of Manuscript:  Special Section PAPER (Special Section on Cooperative Communications for Cellular Networks)
Category: 
Keyword: 
LTE-Advancedinterference rejection combininginter-cell interferencecoordinated multipoint transmission/reception
 Summary | Full Text:PDF

Partially Non-orthogonal Block Diagonalization-Based Precoding in Downlink Multiuser MIMO with Limited Channel State Information Feedback
Yuki TAJIKA Hidekazu TAOKA Kenichi HIGUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/12/01
Vol. E94-B  No. 12  pp. 3280-3288
Type of Manuscript:  Special Section PAPER (Special Section on Cooperative Communications for Cellular Networks)
Category: 
Keyword: 
multiuser MIMObase station cooperationprecodingblock diagonalizationchannel state information
 Summary | Full Text:PDF

A Multi-Stage Hybrid Scheduler for Codebook-Based MU-MIMO System
Jingxiu LIU Xiaoming SHE Lan CHEN Hidekazu TAOKA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/06/01
Vol. E92-B  No. 6  pp. 2303-2307
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
precodingmulti-user schedulingcodebookMax C/IPF
 Summary | Full Text:PDF

Field Experiments on Real-Time 1-Gbps High-Speed Packet Transmission in MIMO-OFDM Broadband Packet Radio Access
Hidekazu TAOKA Kenichi HIGUCHI Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1725-1734
Type of Manuscript:  Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
OFDMMIMOdownlinkAMCQRM-MLDASESS
 Summary | Full Text:PDF

Layered OFDMA and Its Radio Access Techniques for LTE-Advanced
Motohiro TANNO Yoshihisa KISHIYAMA Hidekazu TAOKA Nobuhiko MIKI Kenichi HIGUCHI Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1743-1750
Type of Manuscript:  Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
IMT-AdvancedLTE-AdvancedLayered OFDMAEvolved-UTRA
 Summary | Full Text:PDF

Coverage Performance of Common/Shared Control Signals Using Transmit Diversity in Evolved UTRA Downlink
Hidekazu TAOKA Akihito MORIMOTO Hiroyuki KAWAI Kenichi HIGUCHI Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1589-1599
Type of Manuscript:  Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
OFDMtransmit diversityEvolved UTRAdownlinkcontrol signal
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Influence of Channel Estimation Error on MIMO Multiplexing Using Precoding in Downlink OFDM Radio Access
Takashi ISOGAI Mamoru SAWAHASHI Hidekazu TAOKA Kenichi HIGUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1553-1562
Type of Manuscript:  Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
OFDMMIMOprecodingchannel estimationdownlink
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Experiments on Frequency Error Compensation Using Synchronization Channel in OFDM Radio Access
Hidekazu TAOKA Fumiaki ITO Keiji TAKAKUSAKI Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1619-1626
Type of Manuscript:  Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
OFDMAFCSCHdownlinkEvolved UTRA
 Summary | Full Text:PDF

Field Experiments on Open-Loop Type Transmit Diversity in OFDM Radio Access
Shohei TSUCHIDA Mamoru SAWAHASHI Hidekazu TAOKA Kenichi HIGUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1705-1713
Type of Manuscript:  Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
OFDMtransmit diversitySFBCSFBC+FSTD
 Summary | Full Text:PDF

Comparisons between Common and Dedicated Reference Signals for MIMO Multiplexing Using Precoding in Evolved UTRA Downlink
Hidekazu TAOKA Yoshihisa KISHIYAMA Kenichi HIGUCHI Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1669-1679
Type of Manuscript:  Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
Evolved UTRAOFDMMIMOprecoding reference signaldownlink
 Summary | Full Text:PDF

Adaptive Selection of Surviving Symbol Replica Candidates for Quasi-Maximum Likelihood Detection Using M-Algorithm with QR-Decomposition for OFDM MIMO Multiplexing
Kenichi HIGUCHI Hiroyuki KAWAI Hidekazu TAOKA Noriyuki MAEDA Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/04/01
Vol. E92-B  No. 4  pp. 1258-1271
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
OFDMMIMOspatial multiplexingmaximum likelihood detectionM-algorithm
 Summary | Full Text:PDF

Multi-Codebook Based Beamforming and Scheduling for MIMO-OFDM Systems with Limited Feedback
Xiaoming SHE Jingxiu LIU Lan CHEN Hidekazu TAOKA Kenichi HIGUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/11/01
Vol. E91-B  No. 11  pp. 3745-3748
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
transmit beamforminglimited feedbackmulti-user diversityMIMO-OFDM
 Summary | Full Text:PDF

Experimental Evaluation of Coherent Adaptive Antenna Array Diversity Receiver Employing Optical Fiber Interface in IF Stage
Taisuke IHARA Hidekazu TAOKA Kenichi HIGUCHI Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/07/01
Vol. E86-A  No. 7  pp. 1676-1688
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
optical fiber feederadaptive antenna arrayinterference suppressionW-CDMA
 Summary | Full Text:PDF

Experiments on Coherent Adaptive Antenna Array Diversity Receiver Based on Antenna-Weight Generation Common to Paths in W-CDMA Reverse Link
Hidekazu TAOKA Shinya TANAKA Taisuke IHARA Kenichi HIGUCHI Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 191-205
Type of Manuscript:  Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
DS-CDMAadaptive antenna arrayinterference suppression
 Summary | Full Text:PDF

Experiments on Decision Feedback Type Coherent Adaptive Antenna Array Diversity Receiver in W-CDMA Reverse Link
Shinya TANAKA Hidekazu TAOKA Taisuke IHARA Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/07/01
Vol. E84-B  No. 7  pp. 1849-1860
Type of Manuscript:  Special Section PAPER (Special Issue on Adaptive Array Antenna Techniques for Advanced Wireless Communications)
Category: Application to CDMA
Keyword: 
DS-CDMAadaptive antenna arrayinterference suppressiondecision feedback data
 Summary | Full Text:PDF