多用户分集与接收天线选择联合系统的容量界分析  

Capacity bound analysis of the system combined multi-user diversity with receive antenna selection

作　　者：陈明[1] 朱近康[1] 

机构地区：[1]中国科学技术大学个人通信与扩频实验室,安徽合肥230027

出　　处：《中国科学技术大学学报》2008年第10期1141-1146,共6页JUSTC

基　　金：国家自然科学基金(60572766)资助

摘　　要：研究了MUD-RAS系统(the system combined multi-user diversity with receive antennaselection)的容量.首先推导了MUD-RAS系统的等效单用户容量界,并分析了等效单用户系统分析法的局限性,即当用户数较大时,等效单用户容量界和实际容量存在较大的偏差;然后推导了MUD-RAS的另一个容量上界——多用户最大天线矩容量界的表达式.仿真结果表明,当用户数较大时,所给出的多用户最大天线矩容量界比等效单用户容量界更接近系统的实际容量.The capacity of the MUDRAS （multi-user diversity and receive antenna selection） system combined was studied. Firstly, the equivalent-single-user capacity bound of the MUDRAS system was deduced by means of the equivalent-single-user analysis. Then, the limitation of the equivalent-single- user, was also studied, that is, the equivalent-single-user capacity bound has a big deviation from the capacity of MUD-RAS as the number of users increases. Secondly, a second upper capacity bound, the multi user max-antenna-norm capacity bound, was presented. Simulation results show that, with a larger number of users in the system, the multi-user max antenna-norm capacity bound is closer to the capacity of MUD-RAS than the equivalent-single user.

关 键 词：天线选择 多用户分集 容量界 

分 类 号：TN929.5[电子电信—通信与信息系统]