基于用户服务质量和能效的SCMA资源分配  

SCMA Resource Allocation Scheme Based on User Service Quality and Energy Efficiency

作　　者：张光华[1] 程坤 樊宗源 张素雷 ZHANG Guanghua;CHENG Kun;FAN Zongyuan;ZHANG Sulei(School of Electrical and Information Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学电气信息工程学院,黑龙江大庆163318

出　　处：《吉林大学学报（信息科学版）》2023年第4期590-598,共9页Journal of Jilin University（Information Science Edition）

基　　金：东北石油大学培育基金资助项目(2019QNL-34)。

摘　　要：为提高移动通信中用户服务质量(QoS:Quality of Service),解决系统总能效和用户服务质量不能兼顾的问题,以稀疏码多址接入(SCMA:Spare Code Multiple Access)下行链路为应用场景提出了一种基于用户服务质量和能效的资源分配方案,将系统的容量和能耗作为主要方向进行优化。使用贪婪算法对用户进行码本分配,采用丁克尔巴赫理论(GDA:Generalized Dinkelbach’s Algorithm)将其转化为一个凸优化问题进行迭代求解,以本次计算得出的用户最低服务速率作为下一轮运算的系统最低服务速度重复进行用户码本和能耗轮换计算,直到系统中用户最低通信速度变化低于预设值或达到最大运算次数为止,使系统的容量及能耗达到较好的情况。通过理论分析和仿真结果表明,所提出的SCMA分配方案能有效提升下行链路的用户的通信速率和系统能效。In order to improve the QoS(Quality of Service)of users in mobile communications and to solve the problem that the total energy efficiency of the system and the quality of service of users can not be reconciled,a resource allocation scheme based on the quality of service and energy efficiency of users is proposed for the application scenario of SCMA(Sparse Code Multiple Access)downlink.The capacity and energy consumption of the system are taken as the main directions for optimisation.A greedy algorithm is used to allocate subscribers to the codebook,which is transformed into a convex optimization problem using the GDA(Generalized Dinkelbach’s Algorithm)for iterative solution.The user code book and energy consumption are calculated in rotation until the minimum user communication speed in the system changes below a preset value or reaches the maximum number of operations,so that the capacity and energy consumption of the system reach a better situation.The theoretical analysis and simulation results show that the proposed SCMA allocation scheme can effectively improve the communication rate and system energy efficiency of the users in the downlink.

关 键 词：稀疏码多址技术 资源分配 码本分配 能耗 

分 类 号：TN929.5[电子电信—通信与信息系统]