5G MU-MIMO关键技术和性能研究  

Key Technology and Performance in 5G MU-MIMO System

作　　者：李新玥[1] 杨艳[1] 张涛[1] Li Xinyue;Yang Yan;Zhang Tao(China Unicom Network Technology Research Institute,Beijing 100048,China)

机构地区：[1]中国联通网络技术研究院

出　　处：《邮电设计技术》2019年第12期46-51,共6页Designing Techniques of Posts and Telecommunications

摘　　要：对5G的MU-MIMO技术和性能进行了分析,并与SU-MIMO做对比。首先介绍了MU-MIMO的关键技术,包括系统模型、预编码技术和用户配对算法,并结合系统模型推导出用户在2种传输模式下的SINR。其次通过仿真分析,得出信道相关性和SINR对系统吞吐量的影响。最后以系统吞吐量增益为原则,找到了2种传输模式合理切换门限,为5G的调度算法提供参考。5G MU-MIMO technologies and performance are analyzed and compared with SU-MIMO.Firstly,the key technologies of MU-MIMO are introduced,including system model,precoding technology and user pairing algorithm.According to the sys-tem model,the user's SINR in both modes is derived.Secondly,through simulation analysis,the influence of channel correla-tion and SINR on system throughput are obtained.Finally,based on the principle of system gain,reasonable thresholds for two transmission mode switching are obtained,which provides a reference for 5G scheduling algorithm.

关 键 词：MU-MIMO 信道相关性 SINR 吞吐量增益 

分 类 号：TN929.5[电子电信—通信与信息系统]