分布式移动通信系统中多用户分集分析  

Analysis of Transmit Diversity's Influence on Multi-user Diversity in Distributed Mobile Communication System

作　　者：封志宏[1] 蒋占军[1] 王炎[2] 王东明[2] 

机构地区：[1]兰州交通大学电子与信息工程学院,甘肃兰州730070 [2]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《无线电工程》2009年第1期4-6,共3页Radio Engineering

基　　金：国家"863"计划项目(2006AA01Z268);国家自然科学基金(60702028)赞助课题

摘　　要：分析了分布式移动通信系统中,Rayleigh-lognormal复合信道下,发送分集对下行链路多用户分集的影响,发现基于最大比发送(MRT)和基于选择发送分集(STD)调度算法获得了几乎相同的多用户分集增益。该结论表明,在分布式移动通信系统中,采用基于发送分集的调度方案并不能有效地提高系统的吞吐量。The influence of transmit diversity （TD） on multi-user diversity of down links is studied under Rayleigh-lognormal composite channel model in the distributed mobile communication system. It is found that the average throughput of scheduling based on maximum ratio transmit （MRC） is nearly equal to that of scheduling based on selection transmit diversity （STD）. This result shows that scheduling based on riD can not improve the average throughput of the distributed mobile communication system effectively.

关 键 词：分布式移动通信系统 发送分集 多用户分集 调度 

分 类 号：TN929.5[电子电信—通信与信息系统]