| Presentation | 2022-01-20 Terrestrial Acoustic Communications Employing Transmit Precoding and Channel Interpolation Katsuyoshi Yamamoto, Hiroshi Kubo, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes 72kbps terrestrial acoustic communications (TRAC) using commercial acoustic electronic equipment and confirms their effectiveness by means of experimental results. TRACs suffer from both doubly-selective channels, and low transmission information bit rate due to slow propagation speed of sound, where time selectivity and frequency selectivity occur simultaneously. In order to solve these issues, this paper discusses TRACs with the following three features:1) they employ single carrier block transmission with frequency domain equalization using quadrature amplitude modulation (QAM); 2) they compensate distortion of frequency response due to speaker thanks to transmit precoding; 3) they improve tracking capability of mobile environments thanks to channel interpolation. Finally, experimental results confirm that the proposed TRAC can achieve 72kbps transmission information bit rate with a communication distance of 1m under hand-held conditions. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Acoustic Communications / Doubly-Selective Channels / Single Carrier Block Transmission / Channel Interpolation / Frequency Domain Equalization / Transmit Precoding |
| Paper # | IT2021-31,SIP2021-39,RCS2021-199 |
| Date of Issue | 2022-01-13 (IT, SIP, RCS) |
| Conference Information | |
| Committee | RCS / SIP / IT |
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| Conference Date | 2022/1/20(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) / Yukihiro Bandou(NTT) / Tadashi Wadayama(Nagoya Inst. of Tech.) |
| Vice Chair | Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Toshihisa Tanaka(Tokyo Univ. Agri.&Tech.) / Takayuki Nakachi(Ryukyu Univ.) / Tetsuya Kojima(Tokyo Kosen) |
| Secretary | Toshihiko Nishimura(NEC) / Tomoya Tandai(Panasonic) / Fumihide Kojima(Xiaomi) / Toshihisa Tanaka(Takushoku Univ.) / Takayuki Nakachi(Tokyo Univ. Agri.&Tech.) / Tetsuya Kojima(Saitamai Univ.) |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) / Taichi Yoshida(UEC) / Seisuke Kyochi(Univ. of Kitakyushu) / Masanori Hirotomo(Saga Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Signal Processing / Technical Committee on Information Theory |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Terrestrial Acoustic Communications Employing Transmit Precoding and Channel Interpolation |
| Sub Title (in English) | |
| Keyword(1) | Acoustic Communications |
| Keyword(2) | Doubly-Selective Channels |
| Keyword(3) | Single Carrier Block Transmission |
| Keyword(4) | Channel Interpolation |
| Keyword(5) | Frequency Domain Equalization |
| Keyword(6) | Transmit Precoding |
| 1st Author's Name | Katsuyoshi Yamamoto |
| 1st Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| 2nd Author's Name | Hiroshi Kubo |
| 2nd Author's Affiliation | Ritsumeikan University(Ritsumeikan Univ.) |
| Date | 2022-01-20 |
| Paper # | IT2021-31,SIP2021-39,RCS2021-199 |
| Volume (vol) | vol.121 |
| Number (no) | IT-327,SIP-328,RCS-329 |
| Page | pp.pp.18-23(IT), pp.18-23(SIP), pp.18-23(RCS), |
| #Pages | 6 |
| Date of Issue | 2022-01-13 (IT, SIP, RCS) |