Papers - OKAMOTO Eiji
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A Markov-based satellite-to-ground optical channel model and its effective coding scheme Reviewed
Y. Yamashita, E. Okamoto, Y. Iwanami, Y. Shoji, M. Toyoshima, Y. Takayama
IEICE Transactions on Communications E95-B ( 1 ) 254 - 262 2012.01
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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An effective downlink resource allocation scheme based on MIMO-OFDMA-CDM in cellular system Reviewed
Y. Fuwa, E. Okamoto, Y. Iwanami
IEICE Transactions on Communications E94-B ( 12 ) 3550 - 3558 2011.12
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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直交符号とFFTを用いたMIMO-SC-FDEチャネル推定におけるパイロットシンボル配置の柔軟化に関する一検討
佐竹孝太,岡本英二,岩波保則
情報理論とその応用シンポジウム（SITA）予稿集 1 - 6 2011.12
Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)
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An efficient multi-relay transmission scheme using LDGM code for satellite burst erasure channel Reviewed
T. Kyo, E. Okamoto, Y. Shoji, Y. Takayama, M. Toyoshima
Proc. AIAA International Communications Satellite Systems Conference (ICSSC-2011) AIAA2011 ( 8045 ) 1 - 12 2011.11
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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A study on channel estimation scheme in two-timeslot OFDM relay systems applying analog network coding
111 ( 289, RCS2011-228 ) 233 - 238 2011.11
Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)
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E. Okamoto,H. Tsuji,Y. Fujino
Proc. Int’l. Sym. Wireless Personal Multimedia Commun. (WPMC) 294 - 298 2011.10
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Evaluation of the optical communication system for Small Optical Transponder (SOTA) based on the laboratory test Reviewed
H. Takenaka, M. Toyoshima, Y. Shoji, Y. Takayama, Y. Koyama, M. Akioka, E. Okamoto
Proc. International Astronautical Congress (IAC) IAC-11 ( B2.2.10 ) 1 - 5 2011.10
Language：English Publishing type：Research paper (international conference proceedings)
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Performance improvement of NLOS detection scheme in TOA-based position estimation with sensor networks
111 ( 263, USN2011-55 ) 189 - 194 2011.10
Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)
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A comparative study of bit error rate performance in chaos MIMO transmission system Reviewed
E. Okamoto
Proc. Int’l Sym. on Nonlinear Theory and its Applications (NOLTA) 33 - 36 2011.09
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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A study on multi-rate transmission using LDGM code for satellite-to-ground laser communications
111 ( 179, SAT2011-18 ) 13 - 17 2011.08
Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)
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A multi-hop cooperative transmission scheme using LDGM codes for deep space-to-ground optical link
111 ( 179, SAT2011-17 ) 7 - 12 2011.08
Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)
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LEO-to-ground optical link channel model and the performance improvement by LDGM code Invited
111 ( 179, SAT2011-16 ) 1 - 6 2011.08
Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)
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A study on pilot and blind channel estimation scheme in two-way multi-hop MIMO-OFDM system
111 ( 94, RCS2011-56 ) 123 - 128 2011.06
Authorship：Lead author Language：Japanese Publishing type：Research paper (other academic)
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Personal modulation
111 ( 94, RCS2011-43 ) 49 - 54 2011.06
Language：Japanese Publishing type：Research paper (other academic)
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A chaos MIMO transmission scheme for secure communications on physical layer Reviewed
E. Okamoto
Proc. IEEE Vehicular Technology Conf. 2011Spring (VTC-S) 1 - 5 2011.05
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Multi-rate low density generator matrix code for optical satellite communications Reviewed
3. H. Matsuo, E. Okamoto, Y. Iwanami, Y. Shoji, M. Toyoshima, Y. Takayama
Proc. IEEE Int’l Conf. on Space Optical Systems and Applications (ICSOS) 1 - 5 2011.05
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Performance improvement of multi-user downlink MIMO-OFDMA-CDM using proportional fairness algorithm in multi-cell environments Reviewed
Yasuhiro Fuwa, Eiji Okamoto, Yasunori Iwanami
Proc. Joint International Information & Communication Technology, Electronic and Electrical Engineering (JICTEE) 1 - 5 2010.12
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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An efficient LDGM coding scheme for optical satellite-to-ground link based on a new channel model Reviewed
Y. Yamashita, E. Okamoto, Y. Iwanami, Y. Shoji, M. Toyoshima, Y. Takayama
Proc. IEEE Global communications conference (GLOBECOM) ( SAC05-3 ) 1 - 6 2010.12
Authorship：Lead author Language：English Publishing type：Research paper (international conference proceedings)
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Symbol-Based Soft Relaying Strategy for Cooperative Wireless Networks Reviewed
A. Abd Aziz, Y. Iwanami, E. Okamoto
Proc. IEEE Tencon 2010 1 - 5 2010.11
Language：English Publishing type：Research paper (international conference proceedings)
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A Study on Dirty Paper Coding with a Maximum Beam in Multiuser MIMO Downlinks Reviewed
C. Li, Y. Iwanami, E. Okamoto
Proc. IEEE Tencon 2010 1 - 5 2010.11
Language：English Publishing type：Research paper (international conference proceedings)
