| Presentation | 2023-11-17 [Encouragement Talk] Differential OFDM for Underwater Acoustic Communications and its Experimental Results in Sharrow Sea Environment Hiroshi Kubo, Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It is well-known that underwater acoustic communications (UWACs) play an important role for underwater mobile communications. However, UWACs suffer from time selectivity due to Doppler shifts and frequency selectivity due to delay spread, because speed of sound is 1/200000th that of light, where these channel environments are called doubly-selective environments. First, this paper discusses features and issues of UWACs. Next, in order to solve these issues, this paper proposes differential OFDM employing a phase offset insertion scheme for each subcarrier (SPO), multiple differential detection with channel prediction and parallel blind demodulation with respect to different re-samplers. Finally, computer simulation results confirm that the proposed differential OFDM has excellent performance in severe doubly-selective channel environments of UWACs. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Underwater Acoustic Communications / Doubly-Selective Channels / Differential OFDM / Channel Prediction / Multiple Differential Detection / Re-Sampling |
| Paper # | RCS2023-172 |
| Date of Issue | 2023-11-08 (RCS) |
| Conference Information | |
| Committee | AP / RCS |
|---|---|
| Conference Date | 2023/11/15(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kumamoto Prefectural Workers' Welfare Hall |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Chair | Kunio Sakakibara(Nagoya Inst. of Tech.) / Kenichi Higuchi(Tokyo Univ. of Science) |
| Vice Chair | YUAN Qiaowei(Tohoku Inst. of Tech.) / Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) / Naoto Ishii(NEC) |
| Secretary | YUAN Qiaowei(Iwate Univ.) / Fumihide Kojima(Mitsubishi Electric) / Osamu Muta(Univ. of Electro-Comm) / Naoto Ishii(Sharp) |
| Assistant | Tomoki Murakami(NTT) / Masashi Iwabuchi(NTT) / Issei Kanno(KDDI Research) / Yuyuan Chang(Tokyo Inst. of Tech) / Kazuki Maruta(Tokyo Univ. of Science) / Kiichi Tateishi(NTT Docomo) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation / Technical Committee on Radio Communication Systems |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Encouragement Talk] Differential OFDM for Underwater Acoustic Communications and its Experimental Results in Sharrow Sea Environment |
| Sub Title (in English) | |
| Keyword(1) | Underwater Acoustic Communications |
| Keyword(2) | Doubly-Selective Channels |
| Keyword(3) | Differential OFDM |
| Keyword(4) | Channel Prediction |
| Keyword(5) | Multiple Differential Detection |
| Keyword(6) | Re-Sampling |
| 1st Author's Name | Hiroshi Kubo |
| 1st Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 2nd Author's Name | Taichi Fujita |
| 2nd Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 3rd Author's Name | Kouichi Hashimoto |
| 3rd Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 4th Author's Name | Takumi Yoshimura |
| 4th Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| Date | 2023-11-17 |
| Paper # | RCS2023-172 |
| Volume (vol) | vol.123 |
| Number (no) | RCS-263 |
| Page | pp.pp.101-106(RCS), |
| #Pages | 6 |
| Date of Issue | 2023-11-08 (RCS) |