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Paper Abstract and Keywords
Presentation 2022-07-29 14:30
Study on efficient channel coding method for next-generation optical satellite data relay system
Eiji Okamoto, Yuma Yamashita (NITech), Yohei Satoh, Mitsuhiro Nakadai, Takamasa Itahashi, Shiro Yamakawa (JAXA) SAT2022-27
Abstract (in Japanese) (See Japanese page) 
(in English) High-capacity satellite communications are continuously demanded, and one of the challenges is to realize a high-capacity return link from user satellites to ground stations because of enhancing the performance of sensors on earth observation satellites. The Japan Aerospace Exploration Agency (JAXA) has developed an optical inter-satellite communication system "LUCAS" in 2020 and plans to demonstrate 1.8 Gbps data relay between a user satellite in low earth orbit and a ground station. Currently, the realization of a next-generation optical data relay system capable of even higher-speed communications is being studied. However, a detailed performance comparison of channel coding methods for optical data relay systems has not been conducted to enable high-speed communication within the limits of realistic computation power for installation in data relay satellites using optical inter-satellite communication. Therefore, in this paper, we clarify the characteristics of communication channel coding technologies such as polar codes, LDPC codes, and DVB-S2 channel codes when they are applied to optical data relay satellite systems through numerical simulations, and show that the performance of DVB-S2 codes is relatively good. Furthermore, a simple log-likelihood ratio correction method for DVB-S2 is proposed and shown to be effective.
Keyword (in Japanese) (See Japanese page) 
(in English) Japanese data relay system / laser utilizing communication system / non-terrestrial network / channel coding / return link / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 137, SAT2022-27, pp. 57-62, July 2022.
Paper # SAT2022-27 
Date of Issue 2022-07-20 (SAT) 
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 SAT2022-27

Conference Information
Committee AP SANE SAT  
Conference Date 2022-07-27 - 2022-07-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Asahikawa Taisetsu Crystal Hall 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Remote sensing, Sattelite Communication, Radio propagation, Antennas and Propagation 
Paper Information
Registration To SAT 
Conference Code 2022-07-AP-SANE-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on efficient channel coding method for next-generation optical satellite data relay system 
Sub Title (in English)  
Keyword(1) Japanese data relay system  
Keyword(2) laser utilizing communication system  
Keyword(3) non-terrestrial network  
Keyword(4) channel coding  
Keyword(5) return link  
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1st Author's Name Eiji Okamoto  
1st Author's Affiliation Nagoya Institute of Technology (NITech)
2nd Author's Name Yuma Yamashita  
2nd Author's Affiliation Nagoya Institute of Technology (NITech)
3rd Author's Name Yohei Satoh  
3rd Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
4th Author's Name Mitsuhiro Nakadai  
4th Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
5th Author's Name Takamasa Itahashi  
5th Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
6th Author's Name Shiro Yamakawa  
6th Author's Affiliation Japan Aerospace Exploration Agency (JAXA)
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Speaker Author-1 
Date Time 2022-07-29 14:30:00 
Presentation Time 25 minutes 
Registration for SAT 
Paper # SAT2022-27 
Volume (vol) vol.122 
Number (no) no.137 
Page pp.57-62 
#Pages 6 
Date of Issue 2022-07-20 (SAT) 

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