关键词: 最小均方误差估计, 最大似然估计, 空间信道模型, 自相关, 多输入多输出-正交频分复用系统

Abstract: This paper deals with the Minimum Mean Square Error Estimation（MMSEE） of Spatial Channel Model（SCM） proposed by the Third Generation Partnership Project（3GPP） based on Multiple Input Multiple Output（MIMO） Orthogonal Frequency Division Multiplexing（OFDM） system.In particular，MMSEE is focused on the basis of Maximum Likelihood Estimation（MLE）.Since statistical information is the critical element of MMSEE，the generation of coefficients of autocorrelation in SCM with different data rates is derived.Utilizing Ment Carlo method，the prior channel information is gotten.Simulation results verify the accuracy of MMSEE over MLE in terms of mean square error and better BER performance in three typical wireless environment of SCM.

Key words: minimum mean square error estimation, maximum likelihood estimation, spatial channel model, autocorrelation, Multiple Input Multiple Output-Orthogonal Frequency Division Multiplexing system（MIMO-OFDM）