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

被引：0
|
作者：
Lei W. [1 ]
Zhang Z. [1 ]
Lei H. [1 ]
Tang H. [1 ]
机构：
[1] (1. School of Communications and Information Engineering, Chongqing University of Posts and Telecommunications
[2] 2. Chongqing Key Laboratory of Mobile Communications Technology, Chongqing University of Posts and Telecommunications
来源：
Beijing Youdian Daxue Xuebao/Journal of Beijing University of Posts and Telecommunications | 2024年 / 47卷 / 02期
关键词：
cooperative relay; optimization; rate splitting multiple access;
D O I：
10.13190/j.jbupt.2023-096
中图分类号：
学科分类号：
摘要：
A cooperative relay transmission strategy based on rate-splitting multiple access for two-user systems is presented. Firstly, a system efficiency function is designed to evaluate the energy cost of cooperative rate-splitting multiple access systems in a more comprehensive manner. Secondly, to maximize system efficiency, precoding matrices, common rate allocation, transmit power, and time allocation are jointly optimized. Then, We utilize methods such as golden section search and successive convex approximation to transform the non-convex problem into a convex one for solution. The simulation results show that compared with the benchmark scheme, the proposed scheme can achieve higher system efficiency. © 2024 Beijing University of Posts and Telecommunications. All rights reserved.
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页码：58 / 65
页数：7
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