计算机技术与发展Issue(5)：138-142,5.DOI:10.3969/j.issn.1673-629X.2015.05.033
MIMO-OFDM系统的时域信道估计
Time-domain Channel Estimation for MIMO-OFDM System
摘要
Abstract
The channel estimation algorithm based on Linear Minimum Mean Square Error ( LMMSE) in the time domain is discussed in MIMO-OFDM system based on MIMO channel,compared with the classical Least Square ( LS) estimation algorithm,analyze the estima-tion accuracy of the algorithm and noise inhibition. Using classical tapped delay line model,establish a complex channel gain matrix be-tween the transmitting and receiving antennas. The theoretical analysis and simulation experiments show that LMMSE channel estimation algorithm improves the accuracy of the detection and reduces the error rate and mean square error of channel estimation compared with LS channel estimation algorithm,which makes performance of the receiving end is closer to the ideal channel estimation performance.关键词
多输入多输出-正交频分复用/时域信道估计/最小二乘/线性最小均方误差Key words
multi-input multi-output orthogonal frequency division multiplexing/time domain channel estimation/least square/linear minimum mean square error分类
信息技术与安全科学引用本文复制引用
姜洁,仲伟志..MIMO-OFDM系统的时域信道估计[J].计算机技术与发展,2015,(5):138-142,5.基金项目
国家自然科学基金资助项目(61102069,61301105) （61102069,61301105）
南京航空航天大学研究生创新基地(实验室)开放基金资助项目(kfjj130134) （实验室）
