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All Technical Committee Conferences (Searched in: All Years)
| 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] | |
| 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 |
| IN | 2023-01-19 14:30 |
Aichi | Aichi Industry & Labor Center (Primary: On-site, Secondary: Online) |
[Invited Talk]
Research and development on maritime DX Tsuyoshi Takahashi, Kiyohito Yoshihara (KDDI Research) IN2022-59 |
Recent advances in communications such as Internet of Things and high-speed satellite communication have become key driv... [more] | IN2022-59 pp.45-52 |
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