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为了得到使用线性最小均方误差(LMMSE)接收机的空间复用系统(V-BLAST)在连续时变平衰落多天线信道环境中的容量,并分析信道估计误差对于LMMSE接收机输出信干噪比的影响,该文使用随机矩阵理论分析了以训练为基础的信道估计对于接收机性能的影响,得到了渐进表达的容量公式。仿真结果表明:在尺度受限的系统中,分析仍然有效。在得到容量解的基础上,进一步考虑了训练长度和训练间隔的优化,采用数值计算的方法得到了相应的优化结果,它们是信道相关时间和信噪比的函数。
In order to obtain the capacity of a spatial multiplexing system (V-BLAST) using a Linear Minimum Mean Square Error (LMMSE) receiver in a continuous flat-fading multi-antenna channel environment and to analyze the channel estimation error for the LMMSE receiver output SINR This paper uses the stochastic matrix theory to analyze the effect of training-based channel estimation on receiver performance, and obtains the gradual expression of the capacity formula. The simulation results show that the analysis is still valid in the scale-constrained system. Based on the capacity solution, the optimization of training length and training interval is further considered. The corresponding optimization results are obtained by numerical calculation. They are the function of channel-related time and signal-to-noise ratio.