基于MMSE的迭代多用户检测器的性能分析与仿真

Performance analysis and simulation of MMSE based iterative multi-user detector

基于数据处理不等式,分析了采用软干扰消除技术的最小均方误差(MMSE)迭代多用户检测器的输出与发端输入的互信息,以及多用户检测器在已编码CDMA系统中的误比特率(BER)性能,从互信息和渐近效率的角度得出:基于MMSE的迭代多用户检测器为渐进最优。

Based on data processing inequality, the authors analyzed the mutual information of the data bits of the transmitter and the output of the MMSE based soft interference cancellation itera- tive multi-user detector, and they also studied on the bit error rate（BER） of the iterative multi-user detector in the coded CDMA system. From the aspect of mutual information and asymptotic efficiency, they deduced that the MMSE based iterative multi-user detector is asymptotic optimal.