一种空间相关的MIMO-OFDM系统信道估计算法  

A Channel Estimation Algorithm in Spatial-correlated MIMO-OFDM System

作　　者：易爱华[1] 梁晓雯[1] 

机构地区：[1]中国科学技术大学,安徽合肥230027

出　　处：《无线电工程》2012年第3期5-8,共4页Radio Engineering

基　　金：国家科技重大专项课题"TD-LTE面向商用系统设备研发"(2010ZX03002-003-001)

摘　　要：为了提高空间相关信道估计的精度,提出了一种适用于空间相关信道的MIMO-OFDM系统的空域LMMSE信道估计算法及其改进算法,从理论上分析了MSE误差。仿真结果表明,空域LMMSE算法能有效地提高信道估计的精度,尤其是在低信噪比的情况下,所提出的算法获得的效果更为明显。In order to improve the accuracy of spatial correlated channel estimation,a channel estimation algorithm（spatial LMMSE algorithm）is presented for MIMO-OFDM system with spatial correlated channels,and its improved algorithm is also proposed.The MSE performance of the proposed algorithm is analyzed theoretically.Simulation results show that the spatial LMMSE algorithm can effectively improve the accuracy of channel estimation.Especially in the case of low SNR,the proposed method is more effective.

关 键 词：空间相关信道 信道估计 MIMO-OFDM 最小平方算法 线性最小均方误差 

分 类 号：TN925[电子电信—通信与信息系统]