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Paper Abstract and Keywords
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
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

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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