非正交多址接入异构网络用户公平性问题研究  

Research on user fairness in heterogeneous networks with non⁃orthogonal multiple access

作　　者：安秀娟 王兆荣 张东坡[1] AN Xiujuan;WANG Zhaorong;ZHANG Dongpo(The 36th Research Institute of CETC,Jiaxing 314000,China)

机构地区：[1]中国电子科技集团公司第三十六研究所,浙江嘉兴314000

出　　处：《现代电子技术》2024年第13期61-65,共5页Modern Electronics Technique

摘　　要：针对5G非正交多址接入异构网络主要以传输总速率最大化为优化目标带来的资源分配不平衡,导致部分信道最小速率过低,造成用户服务质量下降,从而带来用户之间不公平问题,文中基于非正交接入异构网络模型,综合考虑传输总速率和用户最小速率,提出将整体优化问题解耦,利用最佳信道配对选择和优化用户功率分配方法最大化最小用户速率,解决用户公平性问题。仿真结果表明,提出的算法在较低的复杂度下,用户最小速率明显优于传统方法,用户公平性明显提升。Due to the optimization goal of maximizing the total transmission rate in 5G non-orthogonal multiple access(NOMA)heterogeneous networks,the resource allocation is imbalance,which leads to low minimum channel rates of some channels and decrease in user service quality,which results in unfairness among users.Therefore,this paper proposes to decouple the overall optimization problem by taking into account both the total transmission rate and the minimum user rate on the basis of the NOMA heterogeneous network model.The optimal channel pairing selection and the user power allocation optimization method are utilized to maximize the minimum user rate and achieve user fairness.The simulation results show that the proposed algorithm can significantly outperform the traditional methods in terms of the minimum user rate in the case of lower complexity,and improve user fairness significantly.

关 键 词：异构网络 非正交多址接入 用户公平性 信道配对选择 功率分配 用户最小速率 

分 类 号：TN929.5-34[电子电信—通信与信息系统]