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Paper Abstract and Keywords
Presentation 2026-03-05 16:00
Comparison on Resamplers for Differential OFDM of Underwater Acoustic Communications
Takaaki Shimomura (Ritsumeikan Univ.), Mitsuyasu Deguchi, Yukihiro Kida, Takuya Shimura (JAMSTEC), Hiroshi Kubo (Ritsumeikan Univ.) RCS2025-280
Abstract (in Japanese) (See Japanese page) 
(in English) The authors have proposed differential orthogonal frequency division multiplexing (OFDM) employing synchronization words (SWs) of Zadoff-Chu (ZC) sequences for underwater acoustic communications (UWACs). One of important functions of wireless transmission technologies for UWAC is resampling function, which compresses or expands the sampling period in order to cope with the Doppler effect. This paper evaluates resamplers employing ambiguity function (AF) scheme and parallel blind re-sampler selection (PBRS), and discusses their disadvantages. Next, in order to mitigate their disadvantages, this paper proposes a resampler which detects re-sampling rate using dual SWs, i.e., DSWR. Finally, this paper compares performance of the three resamplers of AF scheme, PBRS and the proposed DSWR, and channel simulation results and shallow water experiment ones show that DSWR has excellent performance keeping small computational complexity.
Keyword (in Japanese) (See Japanese page) 
(in English) Underwater Acoustic Communications / Differential OFDM / Channel Simulation / Shallow Water Experiment / ReSampler / Synchronization Word / /  
Reference Info. IEICE Tech. Rep., vol. 125, no. 387, RCS2025-280, pp. 122-127, March 2026.
Paper # RCS2025-280 
Date of Issue 2026-02-25 (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 RCS2025-280

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) Comparison on Resamplers for Differential OFDM of Underwater Acoustic Communications 
Sub Title (in English)  
Keyword(1) Underwater Acoustic Communications  
Keyword(2) Differential OFDM  
Keyword(3) Channel Simulation  
Keyword(4) Shallow Water Experiment  
Keyword(5) ReSampler  
Keyword(6) Synchronization Word  
Keyword(7)  
Keyword(8)  
1st Author's Name Takaaki Shimomura  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
2nd Author's Name Mitsuyasu Deguchi  
2nd Author's Affiliation Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
3rd Author's Name Yukihiro Kida  
3rd Author's Affiliation Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
4th Author's Name Takuya Shimura  
4th Author's Affiliation Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
5th Author's Name Hiroshi Kubo  
5th Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
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Speaker Author-1 
Date Time 2026-03-05 16:00:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2025-280 
Volume (vol) vol.125 
Number (no) no.387 
Page pp.122-127 
#Pages 6 
Date of Issue 2026-02-25 (RCS) 

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