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中国科学院大学学报 ›› 2024, Vol. 41 ›› Issue (5): 715-720.DOI: 10.7523/j.ucas.2023.016

• 简报 • 上一篇    

面向低轨卫星通信的低复杂度CA-SCL译码优化算法

胡修齐1,2, 侯缋玲1, 梁广1, 余金培1   

  1. 1. 中国科学院微小卫星创新研究院, 上海;
    2. 上海科技大学, 上海 201210
  • 收稿日期:2022-07-27 修回日期:2023-02-27 发布日期:2023-03-21
  • 通讯作者: 胡修齐,E-mail:huxq@shanghaitech.edu.cn
  • 基金资助:
    上海市产业协同创新项目(No.2021-CYXT2-KJ03)和中国科学院青年创新促进会项目(NO.2020294)资助

Low-complexity CA-SCL decoding optimization algorithm for low-orbit satellite communication

HU Xiuqi1,2, HOU Huiling1, LIANG Guang1, YU Jinpei1   

  1. 1. Institute of Microsatellite Innovation, Chinese Academy of Sciences, Shanghai;
    2. ShanghaiTech University, Shanghai 201210, China
  • Received:2022-07-27 Revised:2023-02-27 Published:2023-03-21

摘要: 基于硬件资源有限的低轨卫星通信环境,以极化码作为信道编码方式,将循环冗余校验(CRC)辅助连续取消列表(SCL)译码器(CRC aided SCL,CA-SCL)结合关键集以及自适应算法,提出一种优化的CA-SCL译码器(optimized CA-SCL,OCASCL),该译码器的译码性能优于经典CA-SCL译码器,运算复杂度可降低65%~70%。

关键词: 低轨卫星通信, 极化码, CA-SCL, 关键集, 低译码复杂度

Abstract: Based on the low-orbit satellite communication environment with limited hardware resources, this paper uses polarization code as the channel coding method, and combines the successive redundancy check (CRC) assisted successive cancellation list (SCL) decoder (CA-SCL) with critical sets and adaptive algorithms to propose an optimized CA-SCL decoder (OCASCL). The performance of the OCASCL decoder is better than the classic SCL decoder, the computational complexity can be reduced by 65%-70%.

Key words: LEO communication, polar code, CA-SCL, critical set, low decoding complexity

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