Mamoru SAWAHASHI


Throughput Comparisons of 32/64APSK Schemes Based on Mutual Information Considering Cubic Metric
Reo KOBAYASHI  Teruo KAWAMURA  Nobuhiko MIKI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/12/01
Vol. E95-B  No. 12  pp. 3719-3727
Type of Manuscript: Special Section PAPER (Special Section on Coding and Coding Theory-Based Signal Processing for Wireless Communications)
Category: 
Keyword: 
APSKthroughputmutual informationcubic metric
  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

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

Performance Evaluation of Joint MLD with Channel Coding Information for Control Signals Using Cyclic Shift CDMA and Block Spread CDMA
Teruo KAWAMURA  Ryota TAKAHASHI  Hideyuki NUMATA  Nobuhiko MIKI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/12/01
Vol. E95-B  No. 12  pp. 3688-3698
Type of Manuscript: Special Section PAPER (Special Section on Coding and Coding Theory-Based Signal Processing for Wireless Communications)
Category: 
Keyword: 
CDMAcyclic shiftblock spreadMLDLTE
  Summary |  Full Text:PDF

Investigation of Inter-Node B Macro Diversity for Single-Carrier Based Radio Access in Evolved UTRA Uplink
Hiroyuki KAWAI  Akihito MORIMOTO  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/01/01
Vol. E93-B  No. 1  pp. 125-134
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
cellular systemspacket radio accessEvolved UTRAuplinkmacro diversitysoft handover
  Summary |  Full Text:PDF

Experiments on Handover Using Combination of Bicast and Forwarding of IP Packet for Future IP-Based RANs
Motohiro TANNO  Akihito MORIMOTO  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1735-1742
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
handoverbicastforwardingexperimentradio access network
  Summary |  Full Text:PDF

FOREWORD
Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1431-1431
Type of Manuscript: FOREWORD
Category: 
Keyword: 
  Summary |  Full Text:PDF

Performance Comparison between Turbo Code and Rate-Compatible LDPC Code for Evolved UTRA Downlink OFDM Radio Access
Naoto OKUBO  Nobuhiko MIKI  Yoshihisa KISHIYAMA  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1504-1515
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
Evolved UTRAturbo codeLDCP codeZigZag codeturbo SPC code
  Summary |  Full Text:PDF

Experimental Evaluation of Time Diversity Effect in Hybrid ARQ Considering Space and Path Diversity for Downlink OFDM-Based Broadband Radio Access
Nobuhiko MIKI  Hiroyuki ATARASHI  Kenichi HIGUCHI  Mamoru SAWAHASHI  Masao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1516-1526
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
time diversityhybrid ARQOFDMbroadband radio access
  Summary |  Full Text:PDF

Optimum Adaptive Modulation and Channel Coding Scheme for Frequency Domain Channel-Dependent Scheduling in OFDM Based Evolved UTRA Downlink
Nobuhiko MIKI  Yoshihisa KISHIYAMA  Kenichi HIGUCHI  Mamoru SAWAHASHI  Masao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1527-1537
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
Evolved UTRAadaptive modulation and channel codingOFDMfrequency-domain channel-dependent scheduling
  Summary |  Full Text:PDF

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
  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
  Summary |  Full Text:PDF

Cell Search Time Comparison Using Hierarchical and Non-hierarchical Synchronization Channels in OFDM Based Evolved UTRA Downlink
Satoshi NAGATA  Motohiro TANNO  Yoshihisa KISHIYAMA  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1608-1618
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
Evolved UTRAOFDMcell searchsynchronization channel
  Summary |  Full Text:PDF

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

Investigation on Optimum Control Interval for Intra-Cell Fractional TPC Using AMC for Shared Channel in Evolved UTRA Uplink
Daisuke NISHIKAWA  Yoshihisa KISHIYAMA  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1627-1633
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
Evolved UTRAfractional transmission power controladaptive modulation and codinguplink
  Summary |  Full Text:PDF

Investigation of Inter-Cell Transmission Power Control Using Overload Indicator for Selected Users for Evolved UTRA Uplink
Daisuke NISHIKAWA  Yoshihisa KISHIYAMA  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1634-1640
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
Evolved UTRAtransmission power controloverload indicatorinter-cell interference
  Summary |  Full Text:PDF

Performance Evaluations of MBMS Signals Using Transmit/Receiver Diversity with SFN in OFDM Based Evolved UTRA Downlink
Akihito MORIMOTO  Yoshihisa KISHIYAMA  Motohiro TANNO  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1649-1659
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
Evolved UTRAOFDMMBMSsingle-frequency networktransmit diversity
  Summary |  Full Text:PDF

Block-Wise Resource Block-Level Distributed Transmission for Shared Data Channel in OFDMA Evolved UTRA Downlink
Satoshi NAGATA  Yoshiaki OFUJI  Yoshihisa KISHIYAMA  Nobuhiko MIKI  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1660-1668
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
Evolved UTRAOFDMdistributed transmissionresource blockshared data channel
  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

Investigations on Physical Random Access Channel Structure in Evolved UTRA Uplink
Yoshihisa KISHIYAMA  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1688-1694
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
Evolved UTRAPRACHcoveragebandwidth
  Summary |  Full Text:PDF

Single-Carrier Based Multiplexing of Layer 1/Layer 2 Control Signals in Evolved UTRA Uplink Using DFT-Spread OFDM
Teruo KAWAMURA  Yoshihisa KISHIYAMA  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1695-1704
Type of Manuscript: Special Section PAPER (Special Section on Radio Access Techniques for 3G Evolution)
Category: 
Keyword: 
control signalmultiplexingsingle-carrier FDMAuplinkmobile communications
  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

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

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

Orthogonal Pilot Channel Using Combination of FDMA and CDMA in Single-Carrier FDMA-Based Evolved UTRA Uplink
Teruo KAWAMURA  Yoshihisa KISHIYAMA  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/07/01
Vol. E91-B  No. 7  pp. 2299-2309
Type of Manuscript: PAPER
Category: Wireless Communication Technologies
Keyword: 
single-carrier FDMAevolved UTRAuplinkorthogonal pilot
  Summary |  Full Text:PDF

Physical Channel Structures and Cell Search Method for Scalable Bandwidth for OFDM Radio Access in Evolved UTRA Downlink
Motohiro TANNO  Kenichi HIGUCHI  Satoshi NAGATA  Yoshihisa KISHIYAMA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/12/01
Vol. E90-B  No. 12  pp. 3622-3631
Type of Manuscript: PAPER
Category: Terrestrial Radio Communications
Keyword: 
OFDMevolved UTRAcell searchsynchronization channelscalable bandwidth
  Summary |  Full Text:PDF

Comparison of Throughput Employing Hybrid ARQ Packet Combining in Forward Link OFCDM Broadband Packet Wireless Access
Nobuhiko MIKI  Hiroyuki ATARASHI  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/02/01
Vol. E88-B  No. 2  pp. 594-603
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2)
Category: 
Keyword: 
OFCDMhybrid ARQincremental redundancyChase combining
  Summary |  Full Text:PDF

Accurate FFT Processing Window Timing Detection Based on Maximum SIR Criterion in OFCDM Wireless Access
Satoshi NAGATA  Noriyuki MAEDA  Hiroyuki ATARASHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/02/01
Vol. E88-B  No. 2  pp. 552-560
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2)
Category: 
Keyword: 
FFT window timingSIRinter-symbol interferenceOFCDM
  Summary |  Full Text:PDF

Variable Spreading Factor-OFCDM with Two Dimensional Spreading that Prioritizes Time Domain Spreading for Forward Link Broadband Wireless Access
Noriyuki MAEDA  Yoshihisa KISHIYAMA  Hiroyuki ATARASHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/02/01
Vol. E88-B  No. 2  pp. 487-498
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2)
Category: 
Keyword: 
VSF-OFCDMtwo dimensional spreadingtwo-dimensional orthogonal channelization code assignment
  Summary |  Full Text:PDF

Field Experiments on Throughput Performance above 100 Mbps in Forward Link for VSF-OFCDM Broadband Wireless Access
Yoshihisa KISHIYAMA  Noriyuki MAEDA  Kenichi HIGUCHI  Hiroyuki ATARASHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/02/01
Vol. E88-B  No. 2  pp. 604-614
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2)
Category: 
Keyword: 
broadband packet wireless accessforward linkVSF-OFCDMthroughputfield experiments
  Summary |  Full Text:PDF

Variable Spreading and Chip Repetition Factors (VSCRF)-CDMA in Reverse Link for Broadband Packet Wireless Access
Yoshikazu GOTO  Teruo KAWAMURA  Hiroyuki ATARASHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/02/01
Vol. E88-B  No. 2  pp. 509-519
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part2)
Category: 
Keyword: 
broadband packet wireless accessreverse linkVSCRF-CDMAchip repetitionspreading
  Summary |  Full Text:PDF

Cell Selection Based on Shadowing Variation for Forward Link Broadband OFCDM Packet Wireless Access
Akihito MORIMOTO  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/01/01
Vol. E88-B  No. 1  pp. 150-158
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1)
Category: Cell Selection
Keyword: 
broadband packet wireless accessOFCDMcell selectionhard handovershadowing
  Summary |  Full Text:PDF

Unified Packet Scheduling Method Considering Delay Requirement in OFCDM Forward Link Broadband Wireless Access
Yoshiaki OFUJI  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/01/01
Vol. E88-B  No. 1  pp. 170-182
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1)
Category: Scheduling
Keyword: 
fast packet schedulingOFCDMQoSdelay
  Summary |  Full Text:PDF

Fast Cell Search Algorithm for Overlay System with Cellular and Isolated Cells in Forward Link for OFCDM Broadband Wireless Access
Motohiro TANNO  Hiroyuki ATARASHI  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/01/01
Vol. E88-B  No. 1  pp. 159-169
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1)
Category: Cell Selection
Keyword: 
OFCDMcell searchcellular cellisolated celloverlay
  Summary |  Full Text:PDF

Likelihood Function for QRM-MLD Suitable for Soft-Decision Turbo Decoding and Its Performance for OFCDM MIMO Multiplexing in Multipath Fading Channel
Hiroyuki KAWAI  Kenichi HIGUCHI  Noriyuki MAEDA  Mamoru SAWAHASHI  Takumi ITO  Yoshikazu KAKURA  Akihisa USHIROKAWA  Hiroyuki SEKI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/01/01
Vol. E88-B  No. 1  pp. 47-57
Type of Manuscript: Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1)
Category: MIMO
Keyword: 
MIMOOFCDMQR decompositionmaximum likelihood detectionturbo coding
  Summary |  Full Text:PDF

Antenna Verification Method for Multipath Interference Canceller Based on Replica Generation per Transmit Antenna with Phase Control Transmit Diversity in W-CDMA Forward Link
Akhmad Unggul PRIANTORO  Heiichi YAMAMOTO  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/08/01
Vol. E87-B  No. 8  pp. 2250-2263
Type of Manuscript: PAPER
Category: Terrestrial Radio Communications
Keyword: 
DS-CDMAinterference cancellertransmit diversityantenna verification
  Summary |  Full Text:PDF

Radio Link Capacity Comparison between MC/DS-CDMA and MC-CDMA in Reverse Link Broadband Wireless Access
Shingo SUWA  Hiroyuki ATARASHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/07/01
Vol. E86-A  No. 7  pp. 1645-1655
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
broadband packet wireless accessreverse linkmulti-carrier/DS-CDMAmulti-carrier CDMA
  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

Efficient Random Access Channel Transmission Method Using Packet Retransmission According to QoS
Yousuke IIZUKA  Motohiro TANNO  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2003/07/01
Vol. E86-A  No. 7  pp. 1669-1675
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
broadband packet wireless accessmulticarrier/DS-CDMArandom accessQoS control
  Summary |  Full Text:PDF

Experimental Evaluations on Throughput Performance of Adaptive Modulation and Channel Coding and Hybrid ARQ in HSDPA
Takahiro ASAI  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. 1656-1668
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
high speed downlink packet accessadaptive modulation and channel codinghybrid ARQ
  Summary |  Full Text:PDF

Variable Spreading Factor-Orthogonal Frequency and Code Division Multiplexing (VSF-OFCDM) for Broadband Packet Wireless Access
Hiroyuki ATARASHI  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 291-299
Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
broadband packet wireless accessOFCDMOFDMvariable spreading factorVSF-OFCDM
  Summary |  Full Text:PDF

Multipath Interference Canceller Employing Multipath Interference Replica Generation with Previously Transmitted Packet Combining for Incremental Redundancy in HSDPA
Nobuhiko MIKI  Sadayuki ABETA  Hiroyuki ATARASHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 142-153
Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
multipath interference cancellerhybrid ARQsoft-decisionhigh-speed downlink packet access
  Summary |  Full Text:PDF

Comparison of Packet Scheduling Algorithms Focusing on User Throughput in High Speed Downlink Packet Access
Yoshiaki OFUJI  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 132-141
Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
packet schedulingHSDPAuser throughputcoverage
  Summary |  Full Text:PDF

Field Experiments on Pilot Symbol-Assisted Coherent Multistage Interference Canceller in DS-CDMA Reverse Link
Kenichi HIGUCHI  Koichi OKAWA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 181-190
Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
mobile radio communicationDS-CDMAinterference cancellertransmit power controlchannel estimation
  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

Performance Comparison of Channel Interleaving Methods in Frequency Domain for VSF-OFCDM Broadband Wireless Access in Forward Link
Noriyuki MAEDA  Hiroyuki ATARASHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 300-313
Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
channel interleavingbit interleavingsymbol interleavingchip interleavingVSF-OFCDM
  Summary |  Full Text:PDF

Adaptive Radio Parameter Control Considering QoS for Forward Link OFCDM Wireless Access
Atsushi HARADA  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 314-324
Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
broadband packet wireless accessforward linkQoS controlHARQadaptive modulation and channel coding
  Summary |  Full Text:PDF

Three-Step Cell Search Algorithm Exploiting Common Pilot Channel for OFCDM Broadband Wireless Access
Motohiro TANNO  Hiroyuki ATARASHI  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 325-334
Type of Manuscript: Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
mobile radiobroadband packet wireless accessOFCDMinitial cell search
  Summary |  Full Text:PDF

Experimental Evaluation of High Rate Data Transmission Using Turbo/Convolutional Coding in W-CDMA Mobile Communications
Kenichi HIGUCHI  Takehiro IKEDA  Satoru FUKUMOTO  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/12/01
Vol. E85-B  No. 12  pp. 2750-2759
Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
mobile radio communicationDS-CDMAturbo codingconvolutional codingfast transmission power control
  Summary |  Full Text:PDF

Investigation of Channel Estimation Method for Adaptive Antenna Array Transmit Diversity in W-CDMA Forward Link
Shinya TANAKA  Mamoru SAWAHASHI  Heiichi YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/12/01
Vol. E85-B  No. 12  pp. 2630-2639
Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
DS-CDMAadaptive antenna arrayinterference suppressionchannel estimation
  Summary |  Full Text:PDF

Three-Step Cell Search Algorithm Employing Synchronization and Common Pilot Channels for OFCDM Broadband Wireless Access
Yukiko ISHII  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/12/01
Vol. E85-B  No. 12  pp. 2672-2683
Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
mobile radiobroadband packet wireless accessOFCDMinitial cell search
  Summary |  Full Text:PDF

Investigation of Inter-Carrier Interference due to Doppler Spread in OFCDM Broadband Packet Wireless Access
Hiroyuki ATARASHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/12/01
Vol. E85-B  No. 12  pp. 2684-2693
Type of Manuscript: Special Section PAPER (Special Issue on Software Defined Radio Technology and Its Applications)
Category: 
Keyword: 
broadband packet wireless accessOFCDMDoppler spreadinter-carrier interference
  Summary |  Full Text:PDF

Antenna Diversity Reception Appropriate for MMSE Combining in Frequency Domain for Forward Link OFCDM Packet Wireless Access
Noriyuki MAEDA  Hiroyuki ATARASHI  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/10/01
Vol. E85-B  No. 10  pp. 1966-1977
Type of Manuscript: Special Section PAPER (Special Issue on Mobile Multimedia Communications)
Category: 
Keyword: 
broadband wireless accessforward linkOFCDMantenna diversity
  Summary |  Full Text:PDF

Performance of Fast Cell Selection Coupled with Fast Packet Scheduling in High-Speed Downlink Packet Access
Akihito MORIMOTO  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/10/01
Vol. E85-B  No. 10  pp. 2021-2031
Type of Manuscript: Special Section PAPER (Special Issue on Mobile Multimedia Communications)
Category: 
Keyword: 
mobile radiohigh-speed downlink packet accesshandoverfast cell selectionpacket scheduling
  Summary |  Full Text:PDF

Experimental Evaluation of Three-Step Cell Search Method in W-CDMA Mobile Communications
Kenichi HIGUCHI  Yukiko HANADA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1511-1523
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
DS-CDMAasynchronous cell sitecell searchcode acquisitionscrambling code
  Summary |  Full Text:PDF

FOREWORD
Mamoru SAWAHASHI  Jae Hong LEE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1435-1435
Type of Manuscript: FOREWORD
Category: 
Keyword: 
  Summary |  Full Text:PDF

SIR Measurement with Data Channel Transmission Gap Using Multipath Interference Canceller for High-Speed Packet Transmission in W-CDMA Forward Link
Akihiro FUJIWARA  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1546-1556
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
DS-CDMAmultipath interferencepacket transmissionadaptive modulationSIR measurement
  Summary |  Full Text:PDF

Multipath Interference Canceller for Orthogonal Code-Multiplexed Channels and Its Performance in W-CDMA Forward Link
Akhmad Unggul PRIANTORO  Heiichi YAMAMOTO  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1524-1535
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
W-CDMAforward linkorthogonal variable spreading factormultipath interference canceller
  Summary |  Full Text:PDF

Comparison of Hybrid ARQ Packet Combining Algorithm in High Speed Downlink Packet Access in a Multipath Fading Channel
Nobuhiko MIKI  Hiroyuki ATARASHI  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1557-1568
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
hybrid ARQadaptive modulation and codingmultipath interference cancellerhigh speed downlink packet access
  Summary |  Full Text:PDF

Evaluation of Optimum Adaptive Antenna Array Beam Forming Configuration Considering Diversity Effect in W-CDMA Forward Link
Satoru FUKUMOTO  Taisuke IHARA  Mamoru SAWAHASHI  Iwao SASASE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1594-1603
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
W-CDMAadaptive antenna array beam formingtransmit diversityfast transmission power controlmobile radio
  Summary |  Full Text:PDF

Experiments on Adaptive Antenna Array Transmit Diversity in W-CDMA Forward Link
Atsushi HARADA  Shinya TANAKA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1612-1623
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
adaptive antenna arrayDS-CDMAmobile radio
  Summary |  Full Text:PDF

Optimum Bandwidth per Sub-Carrier of Multicarrier/DS-CDMA for Broadband Packet Wireless Access in Reverse Link
Shingo SUWA  Hiroyuki ATARASHI  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1624-1634
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
broadband packet wireless accessreverse linkmulticarrier/DS-CDMAoptimum bandwidth
  Summary |  Full Text:PDF

Pilot Channel Assisted MMSE Combining in Forward Link for Broadband OFCDM Packet Wireless Access
Noriyuki MAEDA  Hiroyuki ATARASHI  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2002/07/01
Vol. E85-A  No. 7  pp. 1635-1646
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
broadband packet wireless accessforward linkOFCDMpilot channel assisted MMSE combining
  Summary |  Full Text:PDF

Experiments on Space Time Block Coding Transmit Diversity (STTD) in W-CDMA Forward Link
Satoru FUKUMOTO  Kenichi HIGUCHI  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Vol. E84-A  No. 12  pp. 3045-3057
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
mobile radio communicationW-CDMAtransmit diversityfast transmit power control
  Summary |  Full Text:PDF

Experiments on Parallel-Type Coherent Multistage Interference Canceller with Iterative Channel Estimation for W-CDMA Mobile Radio
Yoshihisa KISHIYAMA  Koichi OKAWA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Vol. E84-A  No. 12  pp. 3000-3011
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
mobile radioW-CDMAparallel-type coherent multistage interference cancelleriterative channel estimationdecision-feedback data symbol
  Summary |  Full Text:PDF

Experiments on Inter-Sector Diversity Using Maximal Ratio Combining in W-CDMA Reverse Link
Akihito MORIMOTO  Kenichi HIGUCHI  Satoru FUKUMOTO  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Vol. E84-A  No. 12  pp. 3012-3025
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
W-CDMAsite diversitytransmit power controlRake combining
  Summary |  Full Text:PDF

Optimum Weight Generation Method for Adaptive Antenna Array Transmit Diversity in W-CDMA Forward Link
Shinya TANAKA  Taisuke IHARA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Vol. E84-A  No. 12  pp. 3035-3044
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
DS-CDMAadaptive antenna arrayinterference suppressioncarrier frequency calibration
  Summary |  Full Text:PDF

Performance Evaluation of Coherent High-Speed TD-OFCDM Broadband Packet Wireless Access in Forward Link Employing Multi-Level Modulation and Hybrid ARQ
Hiroyuki ATARASHI  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/07/01
Vol. E84-A  No. 7  pp. 1670-1680
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
broadband packet wireless accessforward linkTD-OFCDMmulti-level modulationhybrid ARQ
  Summary |  Full Text:PDF

Comparison of Hybrid ARQ Schemes and Optimization of Key Parameters for High-Speed Packet Transmission in W-CDMA Forward Link
Nobuhiko MIKI  Hiroyuki ATARASHI  Sadayuki ABETA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/07/01
Vol. E84-A  No. 7  pp. 1681-1690
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
mobile radioW-CDMAhigh-speed downlink packet accesshybrid ARQ
  Summary |  Full Text:PDF

Outer Loop Control of Fast Transmit Power Control Based on Intermediate Block Error Rate in Concatenated Channel Coding for DS-CDMA Mobile Radio
Koichi OKAWA  Kenichi HIGUCHI  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/07/01
Vol. E84-A  No. 7  pp. 1691-1701
Type of Manuscript: Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
mobile radioW-CDMAconcatenated channel codingtransmit power controlouter loop control
  Summary |  Full Text:PDF

Comparison of Coherent Adaptive Antenna Array Diversity and Multi-Beam Receivers for Packet Transmission in W-CDMA Reverse Link
Naoki NAKAMINAMI  Shinya TANAKA  Taisuke IHARA  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/07/01
Vol. E84-B  No. 7  pp. 1823-1834
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 array diversityinterference suppressionmulti-beam
  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

Fast Two-Step Beam Tracking Algorithm of Coherent Adaptive Antenna Array Diversity Receiver in W-CDMA Reverse Link
Taisuke IHARA  Shinya TANAKA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/07/01
Vol. E84-B  No. 7  pp. 1835-1848
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 arraybeam trackingmobile radio communication
  Summary |  Full Text:PDF

Experiments on Inter-Cell Site Diversity Using Two-Step Selection Combining in W-CDMA Reverse Link
Akihito MORIMOTO  Kenichi HIGUCHI  Satoru FUKUMOTO  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 435-445
Type of Manuscript: Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21st Century)
Category: 
Keyword: 
DS-CDMAsite diversitytransmit power controlCRCSIR
  Summary |  Full Text:PDF

Performance of Coherent Multi-Carrier/DS-CDMA and MC-CDMA for Broadband Packet Wireless Access
Sadayuki ABETA  Hiroyuki ATARASHI  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 406-414
Type of Manuscript: Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21st Century)
Category: 
Keyword: 
broadband packet wireless accesssingle-carrier/DS-CDMAmulti-carrier/DS-CDMAmulticarrier CDMA
  Summary |  Full Text:PDF

Experimental Evaluation of Coherent Rake Combining for Broadband Single-Carrier DS-CDMA Wireless Communications
Takehiro IKEDA  Koichi OKAWA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 415-424
Type of Manuscript: Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21st Century)
Category: 
Keyword: 
wireless communicationbroadband DS-CDMARake combiningtransmit power control
  Summary |  Full Text:PDF

Combined Effect of Coherent Adaptive Antenna Array Diversity and SINR-Based Fast Transmit Power Control in W-CDMA Reverse Link
Shinya TANAKA  Atsushi HARADA  Taisuke IHARA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 425-434
Type of Manuscript: Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21st Century)
Category: 
Keyword: 
mobile communicationW-CDMAadaptive antenna arrayfast transmit power control
  Summary |  Full Text:PDF

Parallel-Type Coherent Multi-Stage Interference Canceller with Iterative Channel Estimation Using Both Pilot and Decision-Feedback Data Symbols for W-CDMA Mobile Radio
Koichi OKAWA  Kenichi HIGUCHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/03/01
Vol. E84-B  No. 3  pp. 446-456
Type of Manuscript: Special Section PAPER (Special Issue on Innovative Mobile Communication Technologies at the Dawn of the 21st Century)
Category: 
Keyword: 
mobile radioW-CDMAparallel-type coherent multistage interference cancelleriterative channel estimationdecision-feedback data symbol
  Summary |  Full Text:PDF

Experiments on Fast Cell Search Algorithm Using Scrambling Code Masking for Inter-Cell Asynchronous W-CDMA System
Kenichi HIGUCHI  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/11/20
Vol. E83-A  No. 11  pp. 2102-2109
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
cell searchinter-cell asynchronous systemDS-CDMAmobile radio
  Summary |  Full Text:PDF

Experimental Evaluations on Array Antenna Configuration of Adaptive Antenna Array Diversity Receiver in W-CDMA Reverse Link
Taisuke IHARA  Shinya TANAKA  Atsushi HARADA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/11/20
Vol. E83-A  No. 11  pp. 2120-2128
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
mobile radio communicationDS-CDMAadaptive antenna arrayinterference suppressing
  Summary |  Full Text:PDF

Path Search Performance and Its Parameter Optimization of Pilot Symbol-Assisted Coherent Rake Receiver for W-CDMA Mobile Radio
Satoru FUKUMOTO  Koichi OKAWA  Kenichi HIGUCHI  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/11/20
Vol. E83-A  No. 11  pp. 2110-2119
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
mobile radio communicationDS-CDMARake receiverpath search
  Summary |  Full Text:PDF

Experiments on 2-Mbps Data Transmission Applying Antenna Diversity Reception over 5-MHz W-CDMA Mobile Radio Link
Koichi OKAWA  Satoru FUKUMOTO  Kenichi HIGUCHI  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/08/20
Vol. E83-B  No. 8  pp. 1602-1609
Type of Manuscript: Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications)
Category: 
Keyword: 
mobile radioW-CDMA2-Mbps data transmissionantenna diversityTPC
  Summary |  Full Text:PDF

Fast Cell Search Algorithm in Idle Mode for Inter-Cell Asynchronous W-CDMA Mobile Radio
Yukiko HANADA  Kenichi HIGUCHI  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2000/08/20
Vol. E83-B  No. 8  pp. 1610-1618
Type of Manuscript: Special Section PAPER (Special Issue on Personal, Indoor and Mobile Radio Communications)
Category: 
Keyword: 
mobile radioDS-CDMAtarget cell searchinter-cell asynchronous system
  Summary |  Full Text:PDF

Adaptive Channel Estimation for Coherent DS-CDMA Mobile Radio Using Time-Multiplexed Pilot and Parallel Pilot Structures
Sadayuki ABETA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1999/09/20
Vol. E82-B  No. 9  pp. 1505-1513
Type of Manuscript: PAPER
Category: Mobile Communication
Keyword: 
adaptive channel estimationDS/CDMApilot channelcoherent RAKE
  Summary |  Full Text:PDF

Promising Techniques to Enhance Radio Link Performance of Wideband Wireless Access Based on DS-CDMA
Fumiyuki ADACHI  Mamoru SAWAHASHI  Hirohito SUDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/11/20
Vol. E81-A  No. 11  pp. 2242-2250
Type of Manuscript: INVITED PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
DS-CDMAwireless accessmobile communications
  Summary |  Full Text:PDF

Fast Cell Search Algorithm in Inter-Cell Asynchronous DS-CDMA Mobile Radio
Kenichi HIGUCHI  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/07/20
Vol. E81-B  No. 7  pp. 1527-1534
Type of Manuscript: PAPER
Category: Mobile Communication
Keyword: 
cell searchinter-cell asynchronous systemDS-CDMAmobile radio
  Summary |  Full Text:PDF

Wideband Wireless Access Based on DS-CDMA
Fumiyuki ADACHI  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/07/20
Vol. E81-B  No. 7  pp. 1305-1316
Type of Manuscript: INVITED PAPER (Special Issue on Third Generation Land Mobile Communication Systems)
Category: 
Keyword: 
DS-CDMAwideband wireless accessmobile communications
  Summary |  Full Text:PDF

Performance Comparison between Time-Multiplexed Pilot Channel and Parallel Pilot Channel for Coherent Rake Combining in DS-CDMA Mobile Radio
Sadayuki ABETA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/07/20
Vol. E81-B  No. 7  pp. 1417-1425
Type of Manuscript: Special Section PAPER (Special Issue on Third Generation Land Mobile Communication Systems)
Category: 
Keyword: 
DS-CDMAchannel estimationpilot channeltransmitter power control
  Summary |  Full Text:PDF

Coherent Delay-Locked Code Tracking Loop Using Time-Multiplexed Pilot for DS-CDMA Mobile Radio
Mamoru SAWAHASHI  Fumiyuki ADACHI  Heiichi YAMAMOTO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/07/20
Vol. E81-B  No. 7  pp. 1426-1432
Type of Manuscript: Special Section PAPER (Special Issue on Third Generation Land Mobile Communication Systems)
Category: 
Keyword: 
delay-locked loopDS-CDMAmobile radio
  Summary |  Full Text:PDF

Channel Estimation Filter Using Time-Multiplexed Pilot Channel for Coherent RAKE Combining in DS-CDMA Mobile Radio
Hidehiro ANDOH  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/07/20
Vol. E81-B  No. 7  pp. 1517-1526
Type of Manuscript: PAPER
Category: Mobile Communication
Keyword: 
DS-CDMAmobile radiochannel estimationRAKE combining
  Summary |  Full Text:PDF

1. 92 Mbps Data Transmission Experiments over a Coherent W-CDMA Radio Link
Koichi OKAWA  Yukihiko OKUMURA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/07/20
Vol. E81-B  No. 7  pp. 1330-1336
Type of Manuscript: Special Section PAPER (Special Issue on Third Generation Land Mobile Communication Systems)
Category: 
Keyword: 
wideband CDMAmobile radioorthogonal multicode transmission
  Summary |  Full Text:PDF

Matched Filter-Based RAKE Combiner for Wideband DS-CDMA Mobile Radio
Satoru FUKUMOTO  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/07/20
Vol. E81-B  No. 7  pp. 1384-1391
Type of Manuscript: Special Section PAPER (Special Issue on Third Generation Land Mobile Communication Systems)
Category: 
Keyword: 
mobile radio communicationDS-CDMAmatched filterRAKE combining
  Summary |  Full Text:PDF

Interference Rejection Weight Control for Pilot Symbol-Assisted Coherent Multistage Interference Canceller Using Recursive Channel Estimation in DS-CDMA Mobile Radio
Mamoru SAWAHASHI  Hidehiro ANDOH  Kenichi HIGUCHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/05/20
Vol. E81-A  No. 5  pp. 957-972
Type of Manuscript: PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
mobile radio communicationDS-CDMAinterference cancellerpilot symbolchannel estimation
  Summary |  Full Text:PDF

Performance of Pilot Symbol-Assisted Coherent Orthogonal Filter Based Rake Receiver Using Fast Transmit Power Control for DS-CDMA Mobile Radio
Hidehiro ANDOH  Mamoru SAWAHASHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/12/20
Vol. E80-A  No. 12  pp. 2455-2463
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
mobile radio communicationDS-CDMAinterference cancellerpilot symbolchannel estimation
  Summary |  Full Text:PDF

Pilot Symbol-Assisted Decision-Directed Coherent Adaptive Array Diversity for DS-CDMA Mobile Radio Reverse Link
Shinya TANAKA  Mamoru SAWAHASHI  Fumiyuki ADACHI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/12/20
Vol. E80-A  No. 12  pp. 2445-2454
Type of Manuscript: Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
adaptive antenna arrayDS-CDMAmobile radio
  Summary |  Full Text:PDF

Low-Power Consuming Analog-Type Matched Filter for DS-CDMA Mobile Radio
Mamoru SAWAHASHI  Fumiyuki ADACHI  Guoliang SHOU  Changming ZHOU 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/12/20
Vol. E79-A  No. 12  pp. 2071-2077
Type of Manuscript: Special Section PAPER (Special Secton on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
DS-CDMAmatched filteranalog signal processing
  Summary |  Full Text:PDF

Pilot Symbol-Assisted Coherent Multistage Interference Canceller Using Recursive Channel Estimation for DS-CDMA Mobile Radio
Mamoru SAWAHASHI  Yoshinori MIKI  Hidehiro ANDOH  Kenichi HIGUCHI 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1996/09/20
Vol. E79-B  No. 9  pp. 1262-1270
Type of Manuscript: Special Section PAPER (Special Issue on Personal Communications)
Category: Modulation, Equalization and interference cancellation technologies
Keyword: 
mobile radio communicationDS/CDMAinterference cancellerpilot symbolchannel estimation
  Summary |  Full Text:PDF