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| Presentation | 2026-03-04 09:45 [Technology Exhibit] An Experimental Massive MIMO-OFDM Transmission System for High-Efficiency Underwater Acoustic Communication Shuji Nonaka, Kota Koyano, Ayaka Saeki (Tokyo Univ. of Science), Daisuke Hisano (Univ. of Osaka), Mitsuyasu Deguchi, Yukihiro Kida, Ayaka Yomoda, Takuya Shimura (JAMSTEC), Kazuki Maruta (Tokyo Univ. of Science)  RCS2025-251 SR2025-81 SRW2025-59 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper presents a demonstration of broadband OFDM combined with massive MIMO transmission for improving the stability and capacity of underwater acoustic communication (UWAC). UWAC systems suffer from doubly selective channels with long delay spreads and severe time variations. Conventional approaches handle delayed paths at the cost of efficiency and rely on complex processing to compensate for Doppler effects. The proposed scheme employs broadband transmission with shortened symbol duration, allowing inter-symbol interference while suppressing its impact through array diversity gain. In addition, CSI-based spatial filtering separates dominant propagation paths. We have developed a measurement-based experimental platform, and the demonstration shows near real-time transmission using a small water tank. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Underwater acoustic communciation / OFDM / Massive MIMO / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 125, no. 387, RCS2025-251, pp. 2-2, March 2026. | |
| Paper # | RCS2025-251 | |
| Date of Issue | 2026-02-25 (RCS, SR, SRW) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | RCS2025-251 SR2025-81 SRW2025-59 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2026-03-04 - 2026-03-06 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo University of Science |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2026-03-RCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | An Experimental Massive MIMO-OFDM Transmission System for High-Efficiency Underwater Acoustic Communication |
| Sub Title (in English) | |
| Keyword(1) | Underwater acoustic communciation |
| Keyword(2) | OFDM |
| Keyword(3) | Massive MIMO |
| Keyword(4) | |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shuji Nonaka |
| 1st Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
| 2nd Author's Name | Kota Koyano |
| 2nd Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
| 3rd Author's Name | Ayaka Saeki |
| 3rd Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
| 4th Author's Name | Daisuke Hisano |
| 4th Author's Affiliation | The University of Osaka (Univ. of Osaka) |
| 5th Author's Name | Mitsuyasu Deguchi |
| 5th Author's Affiliation | Japan Agency for Marine-Earth Science and Technology (JAMSTEC) |
| 6th Author's Name | Yukihiro Kida |
| 6th Author's Affiliation | Japan Agency for Marine-Earth Science and Technology (JAMSTEC) |
| 7th Author's Name | Ayaka Yomoda |
| 7th Author's Affiliation | Japan Agency for Marine-Earth Science and Technology (JAMSTEC) |
| 8th Author's Name | Takuya Shimura |
| 8th Author's Affiliation | Japan Agency for Marine-Earth Science and Technology (JAMSTEC) |
| 9th Author's Name | Kazuki Maruta |
| 9th Author's Affiliation | Tokyo University of Science (Tokyo Univ. of Science) |
| Speaker | Author-1 |
| Date Time | 2026-03-04 09:45:00 |
| Presentation Time | 15 minutes |
| Registration for | RCS |
| Paper # | RCS2025-251, SR2025-81, SRW2025-59 |
| Volume (vol) | vol.125 |
| Number (no) | no.387(RCS), no.388(SR), no.389(SRW) |
| Page | p.2 |
| #Pages | 1 |
| Date of Issue | 2026-02-25 (RCS, SR, SRW) |
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