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Paper Abstract and Keywords
Presentation 2023-11-17 11:00
Underwater acoustic OFDM transmission system with blind delay wave suppression
Haruya Ikeda, Soma Sumita (Tokyo Univ. of Science), Daisuke Hisano (Osaka Univ.), Kazuki Maruta (Tokyo Univ. of Science) RCS2023-171
Abstract (in Japanese) (See Japanese page) 
(in English) For Beyond 5G/6G, research on wireless communications outside of land (e.g., in space, underwater, etc.) is underway. Among them, underwater acoustic communication has a problem of communication capacity due to the frequency limitation. Moreover, since the speed of sound in water is about 1/200,000 of that on land, the arrival time of delayed waves is very long, ranging from a few ms to several hundred ms, which is quite different from that of land-based radio communications. Therefore, interference suppression of the delayed wave is necessary for stable communication over a wide bandwidth. In orthogonal frequency division multiplexing (OFDM) transmission, delayed waves are usually suppressed by inserting a cyclic prefix (CP), but long CP are required for long delayed waves, leading to overhead. In this paper, we propose a highly efficient underwater acoustic OFDM transmission scheme using interference suppression with a blind adaptive array. The effectiveness of the proposed method is demonstrated by simulations using evaluation metrics such as bit error rate (BER) and throughput
Keyword (in Japanese) (See Japanese page) 
(in English) Blind adaptive array / Blind Frequency Compensation / Underwater Acoustic Communication / Orthogonal Frequency Division Multiplexing / / / /  
Reference Info. IEICE Tech. Rep., vol. 123, no. 263, RCS2023-171, pp. 95-100, Nov. 2023.
Paper # RCS2023-171 
Date of Issue 2023-11-08 (RCS) 
ISSN Online edition: ISSN 2432-6380
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)
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Conference Information
Committee AP RCS  
Conference Date 2023-11-15 - 2023-11-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Kumamoto Prefectural Workers' Welfare Hall 
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 2023-11-AP-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Underwater acoustic OFDM transmission system with blind delay wave suppression 
Sub Title (in English)  
Keyword(1) Blind adaptive array  
Keyword(2) Blind Frequency Compensation  
Keyword(3) Underwater Acoustic Communication  
Keyword(4) Orthogonal Frequency Division Multiplexing  
1st Author's Name Haruya Ikeda  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Soma Sumita  
2nd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
3rd Author's Name Daisuke Hisano  
3rd Author's Affiliation Osaka University (Osaka Univ.)
4th Author's Name Kazuki Maruta  
4th Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
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Speaker Author-1 
Date Time 2023-11-17 11:00:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2023-171 
Volume (vol) vol.123 
Number (no) no.263 
Page pp.95-100 
Date of Issue 2023-11-08 (RCS) 

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