速率分割多址系统中速率公平性最大化研究  

Research on Rate Fairness Maximization for Rate Splitting Multiple Access Systems

作　　者：鲍慧[1] 崔林林 BAO Hui;CUI Linlin(North China Electric Power University,Baoding Hebei 071003,China)

机构地区：[1]华北电力大学,河北保定071003

出　　处：《通信技术》2022年第11期1444-1448,共5页Communications Technology

基　　金：国网北京市电力公司科技项目(SGBJDK00JLJS2100428)。

摘　　要：针对速率分割多址(Rate Splitting Multiple Access,RSMA)系统中的速率公平性问题,提出了一种公平性评估指数,来衡量系统的速率公平性。为了最大化系统的速率公平性指数,建立了一个关于预编码器向量和公共速率向量的优化问题,并利用一种基于松弛变量和连续凸逼近的方法来求解优化问题。仿真结果表明,所提方案能够提高系统的速率公平性,使系统中各个用户分配到尽可能相同的资源。To address the rate fairness problem in RSMA system, a fairness assessment index is proposed in this paper to measure the rate fairness of the system. In order to maximize the rate fairness index of the system, an optimization problem is formulated by jointly designing the precoder vector and common rate vector. And the method based on slack variable and successive convex approximation is used to solve the optimization problem. The simulation results indicate that the proposed scheme can improve the rate fairness of the system, so that each user in the system can be allocated the same resources as much as possible.

关 键 词：速率分割 公平性评估指数 松弛变量 连续凸逼近 

分 类 号：TN929.5[电子电信—通信与信息系统]