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Paper Abstract and Keywords
Presentation 2022-11-15 14:30
A Channel Sounder for Severe Doubly-Selective Channels of Underwater Acoustic Communications
Hiroshi Kubo, Kouichi Hashimoto, Taichi Fujita, Takumi Yoshimura (Ritsumeikan Univ.) RCS2022-161
Abstract (in Japanese) (See Japanese page) 
(in English) Doubly-selectivity of underwater acoustic communications (UWAC) can be measured by channel sounders, which estimate time-varying channel impulse response (CIR). The authors have been making researches on channel sounders, which transmit the modified maximum length (M) sequence cyclically and estimate CIR by cyclic correlation. However, these channel sounders suffer from a decrease of detected correlation values due to fast time-varying CIR. This paper proposes a channel sounder employing re-samplers which compress and expand sampling periods, in order to solve this issue. The proposed channel sounder operates as follows: 1) prepare multiple re-samplers with different re-sampling rate; 2) calculate cyclic correlations respective for multiple re-samplers; 3) select cyclic correlation with the largest peak for the estimated CIR. Next, computer simulation results confirm that the proposed channel sounder 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 / Channel Sounder / Re-Sampling / Cyclic Correlation / Channel Impulse Response / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 252, RCS2022-161, pp. 37-42, Nov. 2022.
Paper # RCS2022-161 
Date of Issue 2022-11-08 (RCS) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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)
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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) A Channel Sounder 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) Channel Sounder  
Keyword(4) Re-Sampling  
Keyword(5) Cyclic Correlation  
Keyword(6) Channel Impulse Response  
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1st Author's Name Hiroshi Kubo  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
2nd Author's Name Kouichi Hashimoto  
2nd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
3rd Author's Name Taichi Fujita  
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 14:30:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2022-161 
Volume (vol) vol.122 
Number (no) no.252 
Page pp.37-42 
#Pages
Date of Issue 2022-11-08 (RCS) 


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