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Paper Abstract and Keywords
Presentation 2020-11-26 11:20
[Invited Lecture] Adaptive digital down-conversion for underwater acoustic communication
Mitsuyasu Deguchi, Yukihiro Kida, Takuya Shimura (JAMSTEC) AP2020-86 RCS2020-125
Abstract (in Japanese) (See Japanese page) 
(in English) In underwater acoustic communication, effects of the Doppler shift is much larger than that of the radio communication in air because of the slow propagation speed. Particularly, the nonuniform Doppler shift can affect the demodulation performance severely, and it is difficult to deal with the degradation. In order to suppress effects on changes in received time of data symbols caused by the nonuniform Doppler shift, an adaptive digital down-conversion was proposed. The adaptive digital down-conversion is a method to adjust a down-sampled time for each data symbol adaptively. In this paper, simulation results which show the improvement of the demodulation performance by the adaptive digital down-conversion are reported.
Keyword (in Japanese) (See Japanese page) 
(in English) underwater acoustic communication / digital down-conversion / decision feedback equalizer (DFE) / nonuniform Doppler shift / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 249, RCS2020-125, pp. 87-92, Nov. 2020.
Paper # RCS2020-125 
Date of Issue 2020-11-18 (AP, 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 2020-11-25 - 2020-11-27 
Place (in Japanese) (See Japanese page) 
Place (in English) 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 2020-11-RCS-AP-UWT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Adaptive digital down-conversion for underwater acoustic communication 
Sub Title (in English)  
Keyword(1) underwater acoustic communication  
Keyword(2) digital down-conversion  
Keyword(3) decision feedback equalizer (DFE)  
Keyword(4) nonuniform Doppler shift  
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1st Author's Name Mitsuyasu Deguchi  
1st Author's Affiliation The Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
2nd Author's Name Yukihiro Kida  
2nd Author's Affiliation The Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
3rd Author's Name Takuya Shimura  
3rd Author's Affiliation The Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
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Speaker Author-1 
Date Time 2020-11-26 11:20:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # AP2020-86, RCS2020-125 
Volume (vol) vol.120 
Number (no) no.248(AP), no.249(RCS) 
Page pp.72-77(AP), pp.87-92(RCS) 
#Pages
Date of Issue 2020-11-18 (AP, RCS) 


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