分布式MIMO系统最优功率分配容量分析  

Capacity Analysis of Optimal Power Allocation in Distributed MIMO Systems

作　　者：王树坤[1] 高向川[1] 王忠勇[1] 路新华[1] 董素鸽[2] 

机构地区：[1]郑州大学信息工程学院,河南郑州450001 [2]郑州大学西亚斯国际学院,河南郑州451152

出　　处：《通信技术》2015年第8期940-944,共5页Communications Technology

基　　金：国家自然科学基金项目(No.U1204607);河南省重点科技攻关项目(No.132102210493)~~

摘　　要：大规模分布式MIMO(Distributed Multiple-Input Multiple-Output,D-MIMO)系统的性能不仅受到小尺度瑞利衰落的影响,而且还受到路径损耗的影响,系统的容量分析存在一定的困难。目前容量分析多以天线等功率分配为主。基于信道统计信息,结合线性排列天线的结构特点,针对大规模分布式MIMO功率优化后的容量性能进行分析,提出一种最优功率分配方案。与传统的等功率分配方案相比,最优功率分配方案可以使分布式MIMO系统的容量获得较大提升。The performance of D-MIMO （ affected not only by small-scale Rayleigh Massive Distribute Multiple-Input Multiple-Output） systems is fading but also by path loss. There exist certain difficulties in analyzing the capacity of Massive D-MIMO systems. At present, plenty of system capacity analysis focuses on equal power allocation of each transmission antenna. Based on CSI （ Channel Statistics Information）, the structure of linear antennas, and the capacity analysis of the system with optimal power allocation, an optimal power allocation scheme is proposed. Comparison with the traditional equal power allocation indicates that the optimal power allocation scheme could evidently increase the capacity of D-MIMO system.

关 键 词：分布式 MIMO 功率分配 容量 

分 类 号：TN929.5[电子电信—通信与信息系统]