Fumihito SASAMORI


Optimization of Learning Time for Learning-Assisted Rendezvous Channel in Cognitive Radio System
Osamu TAKYU Takayuki YAMAKITA Takeo FUJII Mai OHTA Fumihito SASAMORI Shiro HANDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/02/01
Vol. E98-B  No. 2  pp. 360-369
Type of Manuscript:  PAPER
Category: Terrestrial Wireless Communication/Broadcasting Technologies
Keyword: 
cognitive radiorendezvous channelChannel Occupancy Rate (COR)
 Summary | Full Text:PDF(1.9MB)

Precise BER Analysis of Repetition Coded OFDM Systems over Time- and Frequency-Selective Rayleigh Fading Channels
Fumihito SASAMORI Satoru ASADA Osamu TAKYU Shiro HANDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2015/01/01
Vol. E98-B  No. 1  pp. 88-98
Type of Manuscript:  Special Section PAPER (Special Section on Quality of Diversifying Communication Networks and Services)
Category: 
Keyword: 
OFDMrepetition codingmaximal ratio combiningfading correlationclosed-form equation
 Summary | Full Text:PDF(2.6MB)

Resource Block Assignment to Reduce Peak to Average Power Ratio in Multi-User OFDM
Osamu TAKYU Yohtaro UMEDA Fumihito SASAMORI Shiro HANDA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2014/08/01
Vol. E97-B  No. 8  pp. 1689-1700
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
multiuser OFDMPAPRresource block assignment
 Summary | Full Text:PDF(2MB)

Adaptive Iterative Decoding of Finite-Length Differentially Encoded LDPC Coded Systems with Multiple-Symbol Differential Detection
Yang YU Shiro HANDA Fumihito SASAMORI Osamu TAKYU 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2013/03/01
Vol. E96-B  No. 3  pp. 847-858
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
adaptive iterative decodinglow-density parity-check (LDPC) codesdifferential encoded LDPC coded systemsmultiple-symbol differential detectionextrinsic information transfer (EXIT) band chart
 Summary | Full Text:PDF(1.6MB)

Performance Analysis of Hermite-Symmetric Subcarrier Coding for OFDM Systems over Fading Channels
Fumihito SASAMORI Shiro HANDA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2012/12/01
Vol. E95-A  No. 12  pp. 2461-2469
Type of Manuscript:  PAPER
Category: Communication Theory and Signals
Keyword: 
OFDMHermite-symmetric codingmaximum ratio combiningfrequency correlationclosed-form equation
 Summary | Full Text:PDF(1.4MB)

Performance Analysis of Repetition Coded OFDM Systems with Diversity Combining and Higher-Level Modulation
Fumihito SASAMORI Ziyan JIA Shiro HANDA Shinjiro OSHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2011/01/01
Vol. E94-B  No. 1  pp. 194-202
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
repetition coded OFDMmaximum ratio combininghigher-level modulationmultipath fadingclosed-form equation
 Summary | Full Text:PDF(1.3MB)

Noncoherent Maximum Likelihood Detection for Differential Spatial Multiplexing MIMO Systems
Ziyan JIA Katsunobu YOSHII Shiro HANDA Fumihito SASAMORI Shinjiro OSHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/02/01
Vol. E93-B  No. 2  pp. 361-368
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
noncoherent maximum likelihood detectionspatial multiplexingMIMOmultiple-symbol differential detectionfast calculation algorithm
 Summary | Full Text:PDF(627.1KB)

Multiple-Symbol Differential Detection for Unitary Space-Time-Frequency Coding
Ziyan JIA Shiro HANDA Fumihito SASAMORI Shinjiro OSHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/01/01
Vol. E93-B  No. 1  pp. 90-98
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
multiple-symbol differential detectiondifferential unitary space-time-frequency codingfading autocorrelationOFDMfrequency selective fadingMIMO
 Summary | Full Text:PDF(818.5KB)

A Simple Expression of BER Performance in DPSK/OFDM Systems with Post-Detection Diversity Reception
Fumihito SASAMORI Shiro HANDA Shinjiro OSHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/05/01
Vol. E92-B  No. 5  pp. 1897-1900
Type of Manuscript:  LETTER
Category: Wireless Communication Technologies
Keyword: 
DPSK/OFDMpost-detection diversityDoppler frequency shiftdelay spreadclosed-form equation
 Summary | Full Text:PDF(296.7KB)

A Simple Expression of BER Performance in COFDM Systems over Fading Channels
Fumihito SASAMORI Yuya ISHIKAWA Shiro HANDA Shinjiro OSHITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2009/01/01
Vol. E92-A  No. 1  pp. 332-336
Type of Manuscript:  LETTER
Category: Communication Theory and Signals
Keyword: 
COFDMdiversity combiningfading correlationeigenvector conversionclosed form equation
 Summary | Full Text:PDF(218KB)

A Simple Method of BER Calculation in DPSK/OFDM Systems over Fading Channels
Fumihito SASAMORI Shiro HANDA Shinjiro OSHITA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2005/01/01
Vol. E88-A  No. 1  pp. 366-373
Type of Manuscript:  PAPER
Category: Mobile Information Network and Personal Communications
Keyword: 
DPSK/OFDM systemDoppler frequency shiftdelay spreadbit error rateclosed-form equation
 Summary | Full Text:PDF(1011.8KB)

Improving TCP Performance over ATM-UBR with FED+ Scheme
YoonTze CHIN Shiro HANDA Fumihito SASAMORI Shinjiro OSHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/06/01
Vol. E87-B  No. 6  pp. 1514-1523
Type of Manuscript:  PAPER
Category: Switching
Keyword: 
TCPATMUBRBMSFEDFED+EPDP-REDfuzzy logicefficiencyfairnessrobustnessbuffer requirementease of tuning control parametersper VC accounting
 Summary | Full Text:PDF(297.3KB)

Inter-Symbol Interference Suppression Scheme Using Even-Numbered Sub-Carriers for Fixed-Rate OFDM Systems
Fumiaki MAEHARA Fumihito SASAMORI Fumio TAKAHATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/04/01
Vol. E87-B  No. 4  pp. 866-872
Type of Manuscript:  PAPER
Category: Wireless Communication Technology
Keyword: 
OFDMmultipath delayinter-symbol interferenceeven-numbered sub-carrierguard interval
 Summary | Full Text:PDF(684.5KB)

Approximate Expression of BER Performance in DS-CDMA Systems over Multi-Path Fading Channels
Fumihito SASAMORI Shiro HANDA Fumiaki MAEHARA Fumio TAKAHATA Shinjiro OSHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/08/01
Vol. E86-B  No. 8  pp. 2523-2528
Type of Manuscript:  LETTER
Category: Wireless Communication Technology
Keyword: 
DS-CDMAbit error ratemulti-path fadingDoppler frequencyRician factor
 Summary | Full Text:PDF(386.2KB)

Improve TCP Performance over ATM-UBR with Fuzzy Early Discard Scheme
YoonTze CHIN Shiro HANDA Fumihito SASAMORI Shinjiro OSHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/06/01
Vol. E86-B  No. 6  pp. 1978-1990
Type of Manuscript:  PAPER
Category: Network
Keyword: 
TCPfuzzy logiclimited switch buffersFEDEPDP-REDECD/SPDefficiencyfairnessscalability
 Summary | Full Text:PDF(947.2KB)

Fast Calculation Algorithm and Error Performance of Multiple-Symbol Differential Detection over Fading Channels
Shiro HANDA Yusuke OKANO Mingya LIU Fumihito SASAMORI Shinjiro OSHITA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/03/01
Vol. E86-B  No. 3  pp. 1050-1056
Type of Manuscript:  PAPER
Category: Wireless Communication Technology
Keyword: 
multiple-symbol differential detectionautocorrelationfast calculation algorithmM algorithmRayleigh fading
 Summary | Full Text:PDF(850.9KB)

Linear Predictive Maximal Ratio Combining Transmitter Diversity for OFDM-TDMA/TDD Systems
Fumiaki MAEHARA Fumihito SASAMORI Fumio TAKAHATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2003/01/01
Vol. E86-B  No. 1  pp. 221-229
Type of Manuscript:  Special Section PAPER (Special Issue on Multiple Access and Signal Transmission Techniques for Future Mobile Communications)
Category: 
Keyword: 
OFDMTDMA/TDDtransmitter diversitymaximal ratio combiningpropagation prediction
 Summary | Full Text:PDF(922.7KB)

Theoretical Derivation Method of Bit Error Rate in TDMA/TDD Transmitter Diversity under Cochannel Interference
Fumiaki MAEHARA Fumihito SASAMORI Fumio TAKAHATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2002/03/01
Vol. E85-B  No. 3  pp. 663-666
Type of Manuscript:  LETTER
Category: Wireless Communication Technology
Keyword: 
microcellular mobile communicationsbit error rate (BER)cochannel interferenceTDMA/TDD transmitter diversity
 Summary | Full Text:PDF(243.7KB)

A Transmitter Diversity with Desired Signal Power Selection Using Matched Filter
Fumiaki MAEHARA Fumihito SASAMORI Fumio TAKAHATA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2001/02/01
Vol. E84-B  No. 2  pp. 255-262
Type of Manuscript:  PAPER
Category: Terrestrial Radio Communications
Keyword: 
digital land mobile communicationstransmitter diversitycochannel interference (CCI)desired signal powermatched filter
 Summary | Full Text:PDF(20.4MB)

Theoretical and Approximate Derivation of Bit Error Rate in DS-CDMA Systems under Rician Fading Environment
Fumihito SASAMORI Fumio TAKAHATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/12/25
Vol. E82-A  No. 12  pp. 2660-2668
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
DS/CDMAbit error ratefrequency non-selective fadingRician fading
 Summary | Full Text:PDF(1.1MB)

Approximation Method for Deriving Transmission Efficiency in Direct-Sequence Spread ALOHA Communications System Using a Unified Spread Code
Tohru KIKUTA Fumihito SASAMORI Fumio TAKAHATA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1997/12/25
Vol. E80-A  No. 12  pp. 2500-2508
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
direct-sequence slotted spread ALOHAapproximationpacket collisionprobability of packet successthroughput
 Summary | Full Text:PDF(715.1KB)