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IEICE Trans

Mitsugu OHKAWA

Development of Optically Controlled Beam-Forming Network
Akira AKAISHI Takashi TAKAHASHI Yoshiyuki FUJINO Mitsugu OHKAWA Toshio ASAI Ryutaro SUZUKI Tomohiro AKIYAMA Hirofumi MATSUZAWA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2012/11/01
Vol. E95-B  No. 11  pp. 3404-3411
Type of Manuscript:  Special Section PAPER (Special Section on Satellite Communication Technologies in Conjunction with Main Topics of JC-SAT2011)
Category: 
Keyword: 
beam-forming network, satellite antenna, optically controlled beam-forming network, multiple-beam antenna, 
 Summary | Full Text:PDF
Effect of a Multi-Band OFDM-MIMO System on Frequency-Selective Propagation Characteristics
Mitsugu OHKAWA Ryuji KOHNO 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2005/01/01
Vol. E88-B  No. 1  pp. 19-27
Type of Manuscript:  Special Section PAPER (Special Section on Multi-carrier Signal Processing Techniques for Next Generation Mobile Communications--Part 1)
Category: MIMO
Keyword: 
MIMO, OFDM, multi-band, frequency selected, 
 Summary | Full Text:PDF
A Prototype Modem with the Capability of Unequal Error Protection Developed for ETS-VIII Experiments
Huan-Bang LI Mitsugu OHKAWA Nobufumi SARUWATARI Noriyuki KARIYA 
Publication:   IEICE TRANSACTIONS on Communications
Publication Date: 2004/08/01
Vol. E87-B  No. 8  pp. 2090-2098
Type of Manuscript:  Special Section PAPER (Special Section on Recent Fundamental Technologies for Broadband Satellite Communications)
Category: 
Keyword: 
unequal error protection, multiple block coded modulation, carrier recovery, frame format, link budget, 
 Summary | Full Text:PDF
Performance of Orthogonal Multi-Carrier FH-CDMA System in the Presence of Selective Fading and Nonlinear Amplification
Mitsugu OHKAWA Hiromitsu WAKANA Ryuji KOHNO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 1999/12/25
Vol. E82-A  No. 12  pp. 2649-2659
Type of Manuscript:  Special Section PAPER (Special Section on Spread Spectrum Techniques and Applications)
Category: 
Keyword: 
frequency hopping, code division multiple access, orthogonal multi carrier, frequency selective fading, nonlinear amplification, 
 Summary | Full Text:PDF