天地一体化信息网络 ›› 2020, Vol. 1 ›› Issue (1): 61-65.doi: 10.11959/j.issn.2096-8930.20200108

• 研究 • 上一篇    下一篇

卫星通信系统的稀疏码多址检测技术研究

蒋怡婷,朱立东   

  1. 电子科技大学通信抗干扰技术国家级重点实验室,四川 成都 611731
  • 修回日期:2020-09-14 出版日期:2020-09-20 发布日期:2020-09-20
  • 作者简介:蒋怡婷(1994-),女,四川眉山人,硕士研究生,主要研究多址接入技术|朱立东(1968-),男,四川邻水人,教授,博士,博士生导师,主要研究方向为卫星通信

Research on Sparse Code Multiple Access Detection Technology in Satellite Communication Systems

Yiting JIANG,Lidong ZHU   

  1. National Key Laboratory of Science and Technology on Communications of UESTC,Chengdu,611731,China
  • Revised:2020-09-14 Online:2020-09-20 Published:2020-09-20

摘要:

对卫星通信系统中的SCMA检测算法进行研究,提出将码本优化分配与不完全迭代MPA算法联合检测,在提升系统性能的同时降低系统复杂度。同时,对SCMA检测算法的收敛性进行研究,提出改进的串并结合MPA算法,该算法能够加快系统收敛速度的同时降低处理时延,并且系统复杂度得到了降低。

关键词: 卫星通信系统, 稀疏码多址接入, 检测算法, 算法收敛性

Abstract:

SCMA detection algorithms in the satellite communication system was studied,and optimal allocation of codebook and the incomplete iterative MPA detection algorithm were combined to improve system performance while reducing system complexity.The convergence of the SCMA detection algorithm was studied,and an improved serial-parallel MPA algorithm was proposed.This algorithm could accelerate the system convergence speed while reducing the processing delay,and the system complexity was also reduced.

Key words: satellite communication system, sparse code multiple access, detection algorithm, algorithm convergence

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