NOMA下行链路中用户匹配和功率分配算法  

User pairing and power allocation algorithm for downlink NOMA

作　　者：杨路[1] 吴芳炜 龙恳[1] 陈德建 YANG Lu;WU Fang-wei;LONG Ken;CHEN Dejian(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院

出　　处：《计算机工程与设计》2019年第11期3061-3066,3157,共7页Computer Engineering and Design

基　　金：国家科技重大专项基金项目"低功耗大连接5G系统概念样机研发"(2017ZX03001004-004)

摘　　要：针对非正交多址接入(NOMA)技术的单输入单输出(SISO)下行链路,为降低用户配对的复杂度,提出一种利用加权二分图最优匹配中Kuhu-Munkres算法进行用户匹配;为保障边缘小区用户的数据速率,在配对用户间进一步采用比例公平算法进行用户间的功率分配。仿真结果表明,应用所设计的算法思路,在保证较优系统和速率的基础上,新用户配对的运算复杂度得到有效降低,边缘用户的数据速率得到保障。For the single input single output(SISO)downlink applied by non-orthogonal multiple access(NOMA)technology,a Kuhu-Munkres algorithm for user pairing in weighted bipartite graph optimal pairing was proposed to reduce the complexity of user pairing.To guarantee the data rate of users in the edge cell,aproportional fairness algorithm was used to allocate power between the paired users.Simulation results show that the computational complexity of new user pairing algorithm is effectively reduced and the data rate of edge users is guaranteed on the basis of better overall system rate by using the algorithm.

关 键 词：非正交多址 加权二分图 用户匹配 比例公平 功率分配 

分 类 号：TN929.5[电子电信—通信与信息系统]