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 |
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SAT2022-27 |
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