Masanori HAMAMURA


Approximately-Zero Correlation Zone Sequence Set
Sayuri FUKUI Masanori HAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2016/01/01
Vol. E99-A  No. 1  pp. 159-166
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
FC/DS-CDMAZCZ sequencecorrelation functionperfect sequence
 Summary | Full Text:PDF(1.6MB)

Continuous-Phase, Unmodulated Parallel-Combinatory High-Compaction Multicarrier Modulation
Ryuji HAYASHI Masanori HAMAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/03/01
Vol. E94-B  No. 3  pp. 802-805
Type of Manuscript:  LETTER
Category: Transmission Systems and Transmission Equipment for Communications
Keyword: 
PC signalingHC-MCMcontinuous-phase modulationspectral efficiency
 Summary | Full Text:PDF(812.7KB)

Iterative Algorithm for Reducing the Peak-to-Average Power Ratio of Feedback-Controlled Multitone-Hopping CDMA Signals
Kazuki CHIBA Masanori HAMAMURA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/11/01
Vol. E93-B  No. 11  pp. 3072-3082
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
CDMAasynchronousmultipathfeedbackmultitonePAR
 Summary | Full Text:PDF(1.6MB)

ISI-Free Power Roll-Off Pulse
Masayuki MOHRI Masanori HAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/10/01
Vol. E92-A  No. 10  pp. 2495-2497
Type of Manuscript:  Special Section LETTER (Special Section on Information Theory and Its Applications)
Category: Communication Theory
Keyword: 
intersymbol interferencepulse analysispulse shapingtiming error
 Summary | Full Text:PDF(161.8KB)

Multitone-Hopping CDMA Using Feedback-Controlled Hopping Pattern for Decentralized Multiple Access
Kazuki CHIBA Masanori HAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2008/12/01
Vol. E91-A  No. 12  pp. 3723-3730
Type of Manuscript:  Special Section PAPER (Special Section on Signal Design and its Applications in Communications)
Category: Spread Spectrum Communications
Keyword: 
CDMAdecentralizedasynchronousmultipathfeedbackmultitone
 Summary | Full Text:PDF(756.1KB)

Asynchronous, Decentralized DS-CDMA Using Feedback-Controlled Spreading Sequences for Time-Dispersive Channels
Teruhiko MIYATAKE Kazuki CHIBA Masanori HAMAMURA Shin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/01/01
Vol. E91-B  No. 1  pp. 53-61
Type of Manuscript:  Special Section PAPER (Special Section on Cognitive Radio and Spectrum Sharing Technology)
Category: Spectrum Sharing
Keyword: 
spectrum sharingspread spectrumspreading sequencedirect sequencemultipathCOFRAKE
 Summary | Full Text:PDF(990.2KB)

A Novel Modulation with Parallel Combinatory and High Compaction Multi-Carrier Modulation
Yafei HOU Masanori HAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/11/01
Vol. E90-A  No. 11  pp. 2556-2567
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
PC-OFDMHC-MCMbandwidth efficiencymultiple accessfrequency hoppingPAPR reduction
 Summary | Full Text:PDF(924.6KB)

Collision Recovery for OFDM System over Wireless Channel
Yafei HOU Masanori HAMAMURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/07/01
Vol. E90-A  No. 7  pp. 1312-1322
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
OFDMcollision recoverycapture effectmultipacket receptionhidden terminalsad hoc networks
 Summary | Full Text:PDF(769.3KB)

Sequence Interference Suppression Characteristics of Code-Diversity DS/CDMA over Multipath Fading Channels
Ricardo MANZANILLA Masanori HAMAMURA Shin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Vol. E84-A  No. 12  pp. 2983-2990
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
DS-CDMAcode-diversitymultiple access interferencenear-far problemadaptive weight control
 Summary | Full Text:PDF(528.8KB)

An Acquisition Method Using Correlation Mapping with False Alarm Penalty in M-ary/SS Systems
Yuuki OKAZAKI Masanori HAMAMURA Shin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/06/01
Vol. E84-A  No. 6  pp. 1572-1580
Type of Manuscript:  PAPER
Category: Spread Spectrum Technologies and Applications
Keyword: 
M-ary/SScorrelation mappingfalse alarm penaltyaverage acquisition timereliability
 Summary | Full Text:PDF(21.2MB)

A Modified Acquisition Method Using Code-Orthogonalizing Filters in Asynchronous DS/CDMA
Chiyo NAKANO Masaaki TAHARA Masanori HAMAMURA Shin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2000/11/25
Vol. E83-A  No. 11  pp. 2143-2146
Type of Manuscript:  Special Section LETTER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
DS/CDMAcode-orthogonalizing filtersynchronous acquisition methodcorrelation function
 Summary | Full Text:PDF(5.6MB)

Suppression Effects of Multiple Access Interference in DS/CDMA with Code-Diversity
Tetsuya SEKI Masanori HAMAMURA Shin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/12/25
Vol. E82-A  No. 12  pp. 2720-2727
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
code-diversityDS/CDMAnear-far problemmultiple access interferencemaximal ratio combining
 Summary | Full Text:PDF(487.1KB)

A Proposed DS/CDMA System Using Analog PN Sequences Produced by Adaptive Filters
Seiji HAMADA Masanori HAMAMURA Hitoshi SUZUKI Shin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/11/25
Vol. E81-A  No. 11  pp. 2261-2268
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
asynchronous DS/CDMAadaptive filteranalog PN sequencemultiple access interference
 Summary | Full Text:PDF(733.4KB)

Double M-Ary/Spread Spectrum Communication Systems
Kentaro TAKEUCHI Masanori HAMAMURA Sin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1998/10/25
Vol. E81-A  No. 10  pp. 2064-2072
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Spread Spectrum System
Keyword: 
spread spectrumM-ary/SSdouble M-ary/SSspectral efficiency
 Summary | Full Text:PDF(739KB)

Performance Evaluation for Vehicular Speed Response Phase Locked Loop in Ricean Fading Environment
Masanori HAMAMURA Shin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 1998/03/25
Vol. E81-B  No. 3  pp. 609-615
Type of Manuscript:  PAPER
Category: Radio Communication
Keyword: 
mobile communicationRicean fadingmillimeter wavePLLQPSKfrequency offsetirreducible bit error rate
 Summary | Full Text:PDF(429.3KB)

The Effects of Odd-Correlation and Band-Limitation in Direct-Wave Reception Systems Using Broadband Spread-Spectrum Techniques
Masanori HAMAMURA Shin'ichi TACHIKAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1996/12/25
Vol. E79-A  No. 12  pp. 1972-1981
Type of Manuscript:  Special Section PAPER (Special Secton on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
land mobile radio communicationbroadband spread-spectrumdirect-wave reception systemodd-correlation functionband-limitation
 Summary | Full Text:PDF(644KB)