基于V-BLAST的MIMO无线通信系统性能分析

重点对多输入多输出（MIMO）无线通信系统的信道模型、空时分组码（Alamouti）以及垂直分层空时码（V-BLAST）空间复用技术进行了仿真分析.首先利用MATLAB在信道建模中实现了基于瑞利环境下的信道容量仿真图,同时仿真并分析了天线相关性对信道容量的影响;然后进行了Alamouti方案和最大比接收合并（MRRC）之间的仿真分析;最后对V-BLAST系统中的线性检测（ZF）算法和最小均方误差（MMSE）算法做了仿真比较,从而得出V-BLAST系统优于非V-BLAST体系下的误码性能.

MIMO Wireless Communication System Based on V-BLAST Performance Analysis

We focus on the simulation and analysis of the channel model in multiple input multiple output （MIMO） wireless system,Alamouti STBC and V-BLAST space multiplexing technology. First,by the virtue of MATLAB,the paper implements the simulation of the channel capacity which is based on the situation of Rayleigh as well as the simulation of the effect of the channel capacity which is caused by antenna correlation. Then, we accomplishe the comparison of simulation between the Alamouti STBC and MRRC （Maximal-Ratio Receiver Combining ）. Finally, we fulfils the comparison of simulation of the BER performance between the ZF （Zero Forcing ） algorithm and the MMSE （Minimum Mean Square Error ） algorithm which both are embedded in the scheme of V-BLAST, calculated the V-BLAST system is better than that of non V-BLAST system.