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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 53  /  [Next]  
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
RCS, SR, SRW
(Joint)
2024-03-13
14:15
Tokyo The University of Tokyo (Hongo Campus), and online
(Primary: On-site, Secondary: Online)
A Simple Channel Simulator and a Simple Channel Parameter Evaluation Scheme for Shalloiw Sea Environment of Underwater Acoustic Communications
Kouichi Hashimoto, Eiji Arita, Takaaki Shimomura, Ayano Kunimatsu, Taichi Fujita, Hiroshi Kubo (Ritsumeikan Univ.) RCS2023-262
This paper proposes a simple pass-band channel simulator and a simple channel parameter evaluation scheme for underwater... [more] RCS2023-262
pp.48-53
UWT
(2nd)
2024-01-29
13:00
Tokyo Tokai University Shinagawa Campus
(Primary: On-site, Secondary: Online)
Underwater Acoustic Channel Environment Evaluation Employing a Simple Doubly-Selective Shallow Sea Channel Model
Ayano Kunimatsu, Takaaki Shimomura, Kouichi Hashimoto, Taichi Fujita, Hiroshi Kubo (Ritsumeikan Univ.)
This paper derives channel parameters in severe doubly-selective underwater acoustic channel environments, assuming hori... [more]
UWT
(2nd)
2024-01-29
13:25
Tokyo Tokai University Shinagawa Campus
(Primary: On-site, Secondary: Online)
Wideband Differential OFDM for Acoustic Communications on Wideband Acoustic Channel Measurement
Takaaki Shimomura, Kouichi Hashimoto, Taichi Fujita, Hiroshi Kubo (Ritsumeikan Univ.)
Acoustic communications, e.g., underwater acoustic communications and terrestrial acoustic communications, generally use... [more]
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]
UWT
(2nd)
2024-01-29
15:40
Tokyo Tokai University Shinagawa Campus
(Primary: On-site, Secondary: Online)
Performance evaluation of Frame Aggregation and Block-ack Schemes for long distance communication in Underwater acoustic networks
Takahiro Nakatsu, Kiyoshi Fukui, Yuki Kubo (OKI)
In underwater environment, acoustic signals have a lower propagation loss compared to radio wave signals. Therefore, und... [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]
UWT
(2nd)
2023-11-27
16:50
Shiga Ritsumeikan University Biwako-Kusatsu Campus (BKC) Highly efficient underwater acoustic OFDM transmission system using blind delayed wave suppression -- Verification by simulation and construction of experimental system --
Ikeda Haruya, Sumita Soma (Tokyo Univ. of Science), Hisano Daisuke, Sakai Masahiro (Osaka Univ.), Maruta Kazuki (Tokyo Univ. of Science)
For Beyond 5G/6G, research on non-terrestrial wireless communications (e.g., in space, underwater, etc.) is being conduc... [more]
UWT
(2nd)
2023-11-27
17:15
Shiga Ritsumeikan University Biwako-Kusatsu Campus (BKC) Multi-antenna Passband Channel Simulator for Underwater Acoustic Communications
Soma Sumita, Haruya Ikeda (Tokyo Univ. of Science), Daisuke Hisano (Osaka Univ.), Hiroshi Kubo (Ritsumeikan Univ.), Kazuki Maruta (Tokyo Univ. of Science)
Recently, research on underwater acoustic communication in Beyond 5G/6G has attracted much attention. Since the speed of... [more]
UWT
(2nd)
2023-11-27
17:40
Shiga Ritsumeikan University Biwako-Kusatsu Campus (BKC) Experiments of Wireless-Controlled Remotely Operated Vehicles with Underwater Acoustic Communications
Ryota Okumura, Hiroyuki Fukumoto, Yosuke Fujino, Seiji Ohmori, Yuya Ito, Takumi Ishihara, Yushi Tabata (NTT)
High-speed underwater acoustic communications are desired to control heavy equipment or robot remotely. To achieve high-... [more]
AP, RCS
(Joint)
2023-11-17
11:00
Kumamoto Kumamoto Prefectural Workers' Welfare Hall
(Primary: On-site, Secondary: Online)
Underwater acoustic OFDM transmission system with blind delay wave suppression
Haruya Ikeda, Soma Sumita (Tokyo Univ. of Science), Daisuke Hisano (Osaka Univ.), Kazuki Maruta (Tokyo Univ. of Science) RCS2023-171
For Beyond 5G/6G, research on wireless communications outside of land (e.g., in space, underwater, etc.) is underway. Am... [more] RCS2023-171
pp.95-100
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
MIKA
(3rd)
2023-10-11
14:30
Okinawa Okinawa Jichikaikan
(Primary: On-site, Secondary: Online)
[Poster Presentation] Indoor Water Tank Transmission Experiment for Highly Efficient Underwater Acoustic OFDM Transmission
Haruya Ikeda, Soma Sumita (Tokyo Univ. of Science), Daisuke Hisano (Osaka Univ.), Kazuki Maruta (Tokyo Univ. of Science)
Beyond 5G/6G aims to cover beyond terrestrial communications, e.g., space, underwater, etc. Underwater acoustic communic... [more]
NS, IN, CS, NV
(Joint)
2023-09-07
13:00
Miyagi Tohoku University
(Primary: On-site, Secondary: Online)
[Special Invited Talk] Challenges and Measures for Acoustic Detection and Underwater Communications in Extremely Shallow Waters
Kazuhiko Ohta (KIT) NS2023-50 IN2023-28 CS2023-59
Recently, offshore wind turbines are promoted in coastal areas, however concerns arise regarding how much sound radiated... [more] NS2023-50 IN2023-28 CS2023-59
pp.1-4
SR, UWT
(Joint)
2023-01-26
15:50
Tokyo Takanawa Campus, Tokai Univ.
(Primary: On-site, Secondary: Online)
Differential OFDM Software MODEMs for Underwater Acoustic Communications
Taichi Fujita, Kouichi Hashimoto, Hiroshi Kubo (Ritsumeikan Univ.)
It is well-known that underwater acoustic communications (UWACs) play an important role in underwater mobile communicati... [more]
SR, UWT
(Joint)
2023-01-26
16:15
Tokyo Takanawa Campus, Tokai Univ.
(Primary: On-site, Secondary: Online)
Double Differential OFDM Employing Decision-Feedback Multiple Deferential Detection for Time-varying Doppler Shift
Koki Toyoda, Hiroshi Kubo (Ritsumeikan Univ.)
This paper discusses doubly differential orthogonal frequency division multiplexing (D2OFDM) for underwater acoustic com... [more]
IT, RCS, SIP 2023-01-25
14:10
Gunma Maebashi Terrsa
(Primary: On-site, Secondary: Online)
Differential OFDM with Parallel Blind Demodulation Employing Different Re-Samplers for Underwater Acoustic Communications
Taichi Fujita, Hiroshi Kubo (Ritsumeikan Univ.) IT2022-63 SIP2022-114 RCS2022-242
Underwater acoustic communications (UWAC) suffer from double selectivity, where doubly-selective channels suffer from se... [more] IT2022-63 SIP2022-114 RCS2022-242
pp.196-201
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