北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2024, Vol. 47 ›› Issue (2): 58-65.

• 论文 • 上一篇    下一篇

速率分割多址接入系统中的协作中继传输策略与优化

雷维嘉1,张智1,雷宏江1,2,唐宏1   

  1. 1. 重庆邮电大学
    2.
  • 收稿日期:2023-05-04 修回日期:2023-08-01 出版日期:2024-04-28 发布日期:2024-01-24
  • 通讯作者: 张智 E-mail:1819928551@qq.com
  • 基金资助:
    国家自然科学基金

Cooperative Relay Transmission Strategy and Optimization in Rate Splitting Multiple Access System

  • Received:2023-05-04 Revised:2023-08-01 Online:2024-04-28 Published:2024-01-24

摘要:

针对两用户系统,提出了一种基于速率分割多址接入的协作中继传输策略。首先设计了系统效益函数,以更完善的方式评估协作速率分割多址接入系统的能量成本;然后以最大化系统效益为目标,对预编码矩阵、公共速率分配、发射功率和时间分配进行了联合优化。采用黄金分割搜索法和逐次凸逼近等方法将非凸问题转化为凸问题,并进行了求解。仿真结果显示,与基准方案相比,所提方案能够实现更高的系统效益。


关键词: 速率分割多址接入, 协作中继, 优化

Abstract: A cooperative relay transmission strategy based on rate splitting multiple access for two-user systems is presented. A more complete evaluation method for the energy cost of the cooperative rate splitting multiple access system is designed. To maximize system efficiency, precoded matrices, common rate allocation, transmit power, and time allocation are jointly optimized. The golden section search method and successive convex approximation are used to transform the non-convex problem into a convex problem and solve it. The simulation results show that compared with the benchmark scheme, the proposed scheme can achieve higher system efficiency.

Key words: rate splitting multiple access, cooperative relay, optimization

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