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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 13 of 13  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
RCS, SR, SRW
(Joint)
2024-03-13
13:50
Tokyo The University of Tokyo (Hongo Campus), and online
(Primary: On-site, Secondary: Online)
Performance Improvement for Differential OFDM in Shallow Sea Experiments of Underwater Acoustic Communications
Taichi Fujita, Takaaki Shimomura, Kouichi Hashimoto, Takumi Yoshimura, Hiroshi Kubo (Ritsumeikan Univ.) RCS2023-261
The authors have been evaluating differential orthogonal frequency division multiplexing (OFDM) by means of the experime... [more] RCS2023-261
pp.42-47
UWT
(2nd)
2024-01-29
13:50
Tokyo Tokai University Shinagawa Campus
(Primary: On-site, Secondary: Online)
OFDM transmisson method using Table Selection for Underwater Acoustic Communications
Takumi Yoshimura, Taichi Fujita, Hiroshi Kubo (Ritumeikan Univ.)
Underwater acoustic communications (UWAC) suffer from double selectivity, where doubly-selective channels suffer from se... [more]
UWT
(2nd)
2024-01-29
14:15
Tokyo Tokai University Shinagawa Campus
(Primary: On-site, Secondary: Online)
Shallow-Water Experimental Evaluation of Differential OFDM Software MODEMs for Underwater Acoustic Communications
Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura, Hiroshi Kubo (Ritsumeikan Univ.)
It is well-known that underwater acoustic communications (UWACs) play an important role in underwater mobile communicati... [more]
SIP, IT, RCS 2024-01-19
10:20
Miyagi
(Primary: On-site, Secondary: Online)
Experimental Results of a Channel Sounder for Underwater Acoustic Communications in Sharrow Sea Environment
Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura, Hiroshi Kubo (Ritsumeikan Univ.) IT2023-58 SIP2023-91 RCS2023-233
Doubly-selectivity of underwater acoustic communications (UWACs) can be measured by channel sounders, which estimate tim... [more] IT2023-58 SIP2023-91 RCS2023-233
pp.151-156
SIP, IT, RCS 2024-01-19
10:55
Miyagi
(Primary: On-site, Secondary: Online)
Experimental Results of Differential OFDM for Underwater Acoustic Communications in Sharrow Sea Environment
Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura, Hiroshi Kubo (Ritsumeikan Univ.) IT2023-59 SIP2023-92 RCS2023-234
It is well known that wireless transmission technologies employing spatial combining and adaptive equalization and those... [more] IT2023-59 SIP2023-92 RCS2023-234
pp.157-162
UWT
(2nd)
2023-11-27
14:50
Shiga Ritsumeikan University Biwako-Kusatsu Campus (BKC) [Invited Talk] A Channel Sounder for Underwater Acoustic Communications and its Experimental Results in Sharrow Sea Environment
Hiroshi Kubo, Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura (Ritsumeikan Univ.)
Doubly-selectivity of underwater acoustic communications (UWACs) can be measured by channel sounders, which estimate tim... [more]
AP, RCS
(Joint)
2023-11-17
11:25
Kumamoto Kumamoto Prefectural Workers' Welfare Hall
(Primary: On-site, Secondary: Online)
[Encouragement Talk] Differential OFDM for Underwater Acoustic Communications and its Experimental Results in Sharrow Sea Environment
Hiroshi Kubo, Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura (Ritsumeikan Univ.) RCS2023-172
It is well-known that underwater acoustic communications (UWACs) play an important role for underwater mobile communicat... [more] RCS2023-172
pp.101-106
RCS, AP, UWT
(Joint)
2022-11-15
14:30
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
A Channel Sounder for Severe Doubly-Selective Channels of Underwater Acoustic Communications
Hiroshi Kubo, Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura (Ritsumeikan Univ.) RCS2022-161
Doubly-selectivity of underwater acoustic communications (UWAC) can be measured by channel sounders, which estimate time... [more] RCS2022-161
pp.37-42
RCS, AP, UWT
(Joint)
2022-11-15
14:55
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
Differential OFDM for Severe Doubly-Selective Channels of Underwater Acoustic Communications
Hiroshi Kubo, Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura (Ritsumeikan Univ.) RCS2022-162
It is well known that wireless transmission technologies employing spatial combining and adaptive equalization and those... [more] RCS2022-162
pp.43-48
RCS, AP, UWT
(Joint)
2022-11-16
11:00
Fukuoka Kyushu University, and Online
(Primary: On-site, Secondary: Online)
[Invited Lecture] Wireless Transmission Technologies for Severe Doubly-Selective Channels of Underwater Acoustic Communications
Hiroshi Kubo, Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura (Ritsumeikan Univ.) AP2022-155 RCS2022-166
It is well-known that underwater acoustic communications (UWACs) plays an important role for underwater mobile communica... [more] AP2022-155 RCS2022-166
pp.45-50(AP), pp.67-72(RCS)
EMCJ 2012-01-27
15:50
Fukuoka Kyushu Univ. Research on Radiation Noise from the different implementations in SMPS for Portable Electronic Devices
Kenta Goto, Takumi Yoshimura, Masahito Shoyama (Kyushu Univ.) EMCJ2011-128
Nowadays mobile devices are being widely used in our everyday life. The reduction of EMI radiation noise, which comes fr... [more] EMCJ2011-128
pp.99-103
EMCJ 2012-01-27
16:30
Fukuoka Kyushu Univ. Efficiency and Switching Noise Analysis for Bridgeless PFC Circuits
Kiyoshi Masumoto, Takumi Yoshimura, Masahito Shoyama (Kyushu Univ), Satoshi Tomioka (TDK Lambda) EMCJ2011-130
Recently, efficiency improvement has been noted with the rapidly increasing consumption of energy. The diode losses is t... [more] EMCJ2011-130
pp.111-116
EE 2012-01-26
11:35
Nagasaki   Electromagnetic Resonance Techniques for Wireless Power Supplies
Takumi Yoshimura, Masahito Shoyama (Kyushu Univ.) EE2011-49
Research on wireless power transmission technologies have been attracting more attention after MIT introduced electromag... [more] EE2011-49
pp.103-108
 Results 1 - 13 of 13  /   
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