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对两发送天线MI MO系统在相关瑞利和莱斯信道下V-BLAST检测算法的性能进行了分析,推导出最优和固定检测两种方案中第一步和第二步的误码率.相对于独立同分布瑞利信道,考察了相关瑞利信道和莱斯信道对接收信噪比的影响;相对于固定检测方案,讨论了最优检测算法对信噪比的提升.理论分析和仿真结果表明,瑞利信道相关性或莱斯信道的直达波分量会减弱最优检测方案对信噪比的提升.
The performance of the V-BLAST detection algorithm of the two transmitting antenna MI MO systems under the related Rayleigh and Rice channels is analyzed, and the bit error rates of the first and second steps of the two optimal and fixed detection schemes are derived. In independent and identically distributed Rayleigh channels, the effects of the related Rayleigh and Rice channels on received signal-to-noise ratio are investigated. Compared with the fixed detection scheme, the optimal detection algorithm is proposed to improve the signal-to-noise ratio. Theoretical analysis and simulation results It shows that Rayleigh channel correlation or direct wave component of Rice channel will reduce the signal to noise ratio of the optimal detection scheme.