| Presentation | 2024-01-19 Experimental Results of a Channel Sounder for Underwater Acoustic Communications in Sharrow Sea Environment Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura, Hiroshi Kubo, |
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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 (UWACs) 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. This 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 this channel sounder has excellent CIR estimation performance in severe doubly-selective channel environments of UWACs. Finally, experimental results in sharrow sea environment confirm that this channel sounder has excellent CIR estimation performance in fast moving speed environments of UWACs. |
| 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 # | IT2023-58,SIP2023-91,RCS2023-233 |
| Date of Issue | 2024-01-11 (IT, SIP, RCS) |
| Conference Information | |
| Committee | SIP / IT / RCS |
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| Conference Date | 2024/1/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Takayuki Nakachi(Ryukyu Univ.) / Tetsuya Kojima(Tokyo Kosen) / Kenichi Higuchi(Tokyo Univ. of Science) |
| Vice Chair | Koichi Ichige(Yokohama National Univ.) / Kiyoshi Nishikawa(okyo Metropolitan Univ.) / Yasuyuki Nogami(Okayama Univ.) / Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) / Naoto Ishii(NEC) |
| Secretary | Koichi Ichige(Chiba Univ.) / Kiyoshi Nishikawa(Kogakuin Univ.) / Yasuyuki Nogami(Waseda Univ.) / Fumihide Kojima(Nagaoka Univ. of Tech.) / Osamu Muta(Univ. of Electro-Comm) / Naoto Ishii(Sharp) |
| Assistant | Taichi Yoshida(UEC) / Sayaka Shiota(Tokyo Metropolitan Univ.) / Tetsunao Matsuta(Saitamai Univ.) / 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 Signal Processing / Technical Committee on Information Theory / Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Experimental Results of a Channel Sounder for Underwater Acoustic Communications in Sharrow Sea Environment |
| 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 | Kouichi Hashimoto |
| 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 | Takumi Yoshimura |
| 3rd Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 4th Author's Name | Hiroshi Kubo |
| 4th Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| Date | 2024-01-19 |
| Paper # | IT2023-58,SIP2023-91,RCS2023-233 |
| Volume (vol) | vol.123 |
| Number (no) | IT-338,SIP-339,RCS-340 |
| Page | pp.pp.151-156(IT), pp.151-156(SIP), pp.151-156(RCS), |
| #Pages | 6 |
| Date of Issue | 2024-01-11 (IT, SIP, RCS) |