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Paper Abstract and Keywords
Presentation 2022-11-15 14:55
Differential OFDM for Severe Doubly-Selective Channels of Underwater Acoustic Communications
Hiroshi Kubo, Taichi Fujita, Kouichi Hashimoto, Takumi Yoshimura (Ritsumeikan Univ.) RCS2022-162
Abstract (in Japanese) (See Japanese page) 
(in English) It is well known that wireless transmission technologies employing spatial combining and adaptive equalization and those employing re-samplers and coherent orthogonal frequency division multiplexing (OFDM) are promising technologies for double selectivity of underwater acoustic communications (UWAC). However, the former needs many receive hydrophones and the later suffers from poor transmission efficiency for information symbols. In order to solve these issues, this paper proposes differential OFDM employing a phase offset insertion scheme for each subcarrier (SPO), multiple differential detection with channel prediction and parallel blind demodulation with respect to different re-samplers. Finally, computer simulation results confirm that the proposed differential OFDM has excellent performance in severe doubly-selective channel environments of UWAC.
Keyword (in Japanese) (See Japanese page) 
(in English) Underwater Acoustic Communications / Doubly-Selective Channels / Differential OFDM / Channel Prediction / Multiple Differential Detection / Automatic Frequency Control / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 252, RCS2022-162, pp. 43-48, Nov. 2022.
Paper # RCS2022-162 
Date of Issue 2022-11-08 (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 RCS2022-162

Conference Information
Committee RCS AP UWT  
Conference Date 2022-11-15 - 2022-11-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu University, and Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2022-11-RCS-AP-UWT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Differential OFDM for Severe Doubly-Selective Channels of Underwater Acoustic Communications 
Sub Title (in English)  
Keyword(1) Underwater Acoustic Communications  
Keyword(2) Doubly-Selective Channels  
Keyword(3) Differential OFDM  
Keyword(4) Channel Prediction  
Keyword(5) Multiple Differential Detection  
Keyword(6) Automatic Frequency Control  
Keyword(7)  
Keyword(8)  
1st Author's Name Hiroshi Kubo  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
2nd Author's Name Taichi Fujita  
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.)
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Speaker Author-1 
Date Time 2022-11-15 14:55:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2022-162 
Volume (vol) vol.122 
Number (no) no.252 
Page pp.43-48 
#Pages 6 
Date of Issue 2022-11-08 (RCS) 

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