V-BLAST系统在宏蜂窝MIMO相关信道下的性能分析  

Performance Analysis of V-BLAST System under Macro-Cell MIMO Correlated Channel Conditions

作　　者：石海[1] 梁军华[1] 

机构地区：[1]上海大学通信与信息工程学院,上海200072

出　　处：《上海大学学报（自然科学版）》2006年第6期572-575,共4页Journal of Shanghai University:Natural Science Edition

基　　金：上海市重点学科建设资助项目(T0102)

摘　　要：传统的V-BLAST(Vertical Bell-lab Layered Space Time)系统是基于充分富散射环境假设,即认为收、发天线阵元之间是完全独立的,而这在宏蜂窝移动环境下一般并不成立.根据Ali Abdi等人提出的宏蜂窝MIMO(Multi-InputMulti-Output)信道模型,研究了到达角(AOA:Angle of Arrival)的非均匀分布对V-BLAST系统性能的影响.经计算机仿真分析表明:在非全向散射条件下,移动台一侧到达角分布对室外MIMO系统性能起着关键性的影响.Traditional V-BLAST systems are based on the assumption of rich-scattering environments, which means total independence between the receiver/transmitter antenna elements. Unfortunately, the independence assumption is not tnie under practical macro-cell mobile environments. Based on the macro-cell MIMO channel model proposed by Ali Abdi, the performance of V-BLAST systems under non-uniform distribution of angle of arrival （AOA） is presented in this paper. Simulation results indicate that the distribution of AOA on the mobile station side plays a key role in influencing the performance of outdoor MIMO systems under the condition of non-isotropic scattering.

关 键 词：V—BLAST 多输人多输出 相关 瑞利信道 到达角 非全向散射 

分 类 号：TN925.5[电子电信—通信与信息系统]