| Presentation | 2022-11-15 Differential OFDM for Severe Doubly-Selective Channels of Underwater Acoustic Communications Hiroshi Kubo, Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It is well known that wireless transmission technologies employing spatial combining and adaptive equalization and those employing re-samplers and coherent orthogonal frequency division multiplexing (OFDM) are promising technologies for double selectivity of underwater acoustic communications (UWAC). However, the former needs many receive hydrophones and the later suffers from poor transmission efficiency for information symbols. 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 UWAC. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Underwater Acoustic Communications / Doubly-Selective Channels / Differential OFDM / Channel Prediction / Multiple Differential Detection / Automatic Frequency Control |
| Paper # | RCS2022-162 |
| Date of Issue | 2022-11-08 (RCS) |
| Conference Information | |
| Committee | RCS / AP |
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| Conference Date | 2022/11/15(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyushu University, and Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Chair | Kenichi Higuchi(Tokyo Univ. of Science) / Hiroshi Yamada(Niigata Univ.) |
| Vice Chair | Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) / Mitoshi Fujimoto(Fukui Univ) |
| Secretary | Tomoya Tandai(Panasonic) / Fumihide Kojima(Univ. of Electro-Comm) / Osamu Muta(Sharp) / Mitoshi Fujimoto(National Defense Academy) |
| Assistant | Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Issei Kanno(KDDI Research) / Yuyuan Chang(Tokyo Inst. of Tech) / Kazuki Maruta(Tokyo Univ. of Science) / Tomoki Murakami(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Antennas and Propagation |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Differential OFDM for Severe Doubly-Selective Channels of Underwater Acoustic Communications |
| 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) | Automatic Frequency Control |
| 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 | 2022-11-15 |
| Paper # | RCS2022-162 |
| Volume (vol) | vol.122 |
| Number (no) | RCS-252 |
| Page | pp.pp.43-48(RCS), |
| #Pages | 6 |
| Date of Issue | 2022-11-08 (RCS) |