| Presentation | 2022-11-15 A Channel Sounder for Severe Doubly-Selective Channels of Underwater Acoustic Communications Hiroshi Kubo, Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Doubly-selectivity of underwater acoustic communications (UWAC) can be measured by channel sounders, which estimate time-varying channel impulse response (CIR). The authors have been making researches on channel sounders, which transmit the modified maximum length (M) sequence cyclically and estimate CIR by cyclic correlation. However, these channel sounders suffer from a decrease of detected correlation values due to fast time-varying CIR. This paper proposes a channel sounder employing re-samplers which compress and expand sampling periods, in order to solve this issue. The proposed channel sounder operates as follows: 1) prepare multiple re-samplers with different re-sampling rate; 2) calculate cyclic correlations respective for multiple re-samplers; 3) select cyclic correlation with the largest peak for the estimated CIR. Next, computer simulation results confirm that the proposed channel sounder 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 / Channel Sounder / Re-Sampling / Cyclic Correlation / Channel Impulse Response |
| Paper # | RCS2022-161 |
| 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) | A Channel Sounder 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) | Channel Sounder |
| Keyword(4) | Re-Sampling |
| Keyword(5) | Cyclic Correlation |
| Keyword(6) | Channel Impulse Response |
| 1st Author's Name | Hiroshi Kubo |
| 1st Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 2nd Author's Name | Kouichi Hashimoto |
| 2nd Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 3rd Author's Name | Taichi Fujita |
| 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 # | RCS2022-161 |
| Volume (vol) | vol.122 |
| Number (no) | RCS-252 |
| Page | pp.pp.37-42(RCS), |
| #Pages | 6 |
| Date of Issue | 2022-11-08 (RCS) |