Koichi ADACHI


Subcarrier Mapping for Single-User SC-FDMA Relay Communications
Yu HEMMI Koichi ADACHI Tomoaki OHTSUKI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/12/01
Vol. E94-A  No. 12  pp. 2776-2779
Type of Manuscript:  Special Section LETTER (Special Section on Wideband Systems)
Category: 
Keyword: 
relay communicationSC-FDMAsubcarrier mapping
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Phase Rotation for Constructing Uniform Frequency Spectrum in IFDMA Communication
Takeo YAMASAKI Osamu TAKYU Koichi ADACHI Yohtaro UMEDA Masao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/12/01
Vol. E93-A  No. 12  pp. 2672-2681
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: 
Keyword: 
SC-FDMAIFDMAdecision directed channel estimation (DDCE)phase rotation
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On the Construction of Orthogonal Spreading Code Groups for MC-CDMA with FDE in a Frequency Selective Channel
Koichi ADACHI Masao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2010/03/01
Vol. E93-B  No. 3  pp. 650-659
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
MC-CDMAspreading codefrequency selective fading
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Channel Capacity of MC-CDMA and Impact of Residual ICI
Koichi ADACHI Fumiyuki ADACHI Masao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2009/01/01
Vol. E92-B  No. 1  pp. 219-227
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
MC-CDMAchannel capacityICI cancellationtheoretical study
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On Cellular MIMO Channel Capacity
Koichi ADACHI Fumiyuki ADACHI Masao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2008/07/01
Vol. E91-B  No. 7  pp. 2366-2373
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
MIMOmulti-cell environemntchannel capacity
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Relay Method of Sending Soft Decision Symbol Based on the Result of Error Detecting Code in Cooperative Communication
Yuki FUKUYAMA Osamu TAKYU Koichi ADACHI Masao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2007/11/01
Vol. E90-A  No. 11  pp. 2404-2412
Type of Manuscript:  Special Section PAPER (Special Section on Wideband Systems)
Category: OFDM/Relay
Keyword: 
cooperative communicationtransmit diversitysoft decision symbolCRC
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Theoretical Analysis of Decision Directed Block Iterative Channel Estimation for OFDM Mobile Radio
Koichi ADACHI Masao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/07/01
Vol. E90-B  No. 7  pp. 1764-1772
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
OFDMiterative channel estimationtheoretical analysis
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Iterative Modified QRD-M Based on CRC Codes for OFDM MIMO Multiplexing
Koichi ADACHI Masao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2007/06/01
Vol. E90-B  No. 6  pp. 1433-1443
Type of Manuscript:  PAPER
Category: Wireless Communication Technologies
Keyword: 
OFDM MIMOQRD-Miterative signal detectionCRC codes
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Iterative QRM-MLD with Pilot-Assisted Decision Directed Channel Estimation for OFDM MIMO Multiplexing
Koichi ADACHI Riaz ESMAILZADEH Masao NAKAGAWA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2006/07/01
Vol. E89-A  No. 7  pp. 1892-1902
Type of Manuscript:  Special Section PAPER (Special Section on Multi-dimensional Mobile Information Networks)
Category: 
Keyword: 
OFDM MIMOQRM-MLDchannel estimationturbo coding
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