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| Presentation | 2024-03-13 13:50 Performance Improvement for Differential OFDM in Shallow Sea Experiments of Underwater Acoustic Communications Taichi Fujita, Takaaki Shimomura, Kouichi Hashimoto, Takumi Yoshimura, Hiroshi Kubo (Ritsumeikan Univ.)  RCS2023-261 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The authors have been evaluating differential orthogonal frequency division multiplexing (OFDM) by means of the experimental results of underwater acoustic communications (UWAC) in shallow sea environments. In this paper, differential OFDM employs multiple differential detection (MDD) with channel prediction. However, the above mentioned experimental results show that MDD with channel prediction suffers from performance degradation due to low signal to noise power ratio (SNR). In order to mitigate this degradation, this paper derives parameter for MDD with channel prediction suitable for low SNR. Computer simulation results show that the derived parameter improves performance of differential OFDM at low SNR. Next, MDD with channel prediction using the derived parameter improves the bit error rate performance of experiments in an actual shallow sea environment. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Underwater Acoustic Communications / Shallow Sea Environment Experiment / Differential OFDM / Channel Prediction / Multiple Differential Detection / Channel Simulator / / | |
| Reference Info. | IEICE Tech. Rep., vol. 123, no. 434, RCS2023-261, pp. 42-47, March 2024. | |
| Paper # | RCS2023-261 | |
| Date of Issue | 2024-03-06 (RCS) | |
| 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 | RCS2023-261 |
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| Conference Information | |
| Committee | RCS SR SRW |
| Conference Date | 2024-03-13 - 2024-03-15 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | The University of Tokyo (Hongo Campus), and online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2024-03-RCS-SR-SRW |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Performance Improvement for Differential OFDM in Shallow Sea Experiments of Underwater Acoustic Communications |
| Sub Title (in English) | |
| Keyword(1) | Underwater Acoustic Communications |
| Keyword(2) | Shallow Sea Environment Experiment |
| Keyword(3) | Differential OFDM |
| Keyword(4) | Channel Prediction |
| Keyword(5) | Multiple Differential Detection |
| Keyword(6) | Channel Simulator |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Taichi Fujita |
| 1st Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 2nd Author's Name | Takaaki Shimomura |
| 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.) |
| 5th Author's Name | Hiroshi Kubo |
| 5th Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
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| Speaker | Author-1 |
| Date Time | 2024-03-13 13:50:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2023-261 |
| Volume (vol) | vol.123 |
| Number (no) | no.434 |
| Page | pp.42-47 |
| #Pages | 6 |
| Date of Issue | 2024-03-06 (RCS) |
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