面向低轨卫星通信的低复杂度CA-SCL译码优化算法  

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

作　　者：胡修齐 侯缋玲 梁广 余金培 HU Xiuqi;HOU Huiling;LIANG Guang;YU Jinpei(Institute of Microsatellite Innovation,Chinese Academy of Sciences,Shanghai 201210,China;ShanghaiTech University,Shanghai 201210,China)

机构地区：[1]中国科学院微小卫星创新研究院,上海201210 [2]上海科技大学,上海201210

出　　处：《中国科学院大学学报（中英文）》2024年第5期715-720,共6页Journal of University of Chinese Academy of Sciences

基　　金：上海市产业协同创新项目(No.2021-CYXT2-KJ03);中国科学院青年创新促进会项目(NO.2020294)资助。

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%。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%.

关 键 词：低轨卫星通信 极化码 CA-SCL 关键集 低译码复杂度 

分 类 号：TN911.2[电子电信—通信与信息系统]