TD-LTE系统加性高斯白噪声环境下信道估计算法与仿真  

Channel Estimation Algorithm and Simulation Under the Condition of Additive White Gauss Noise in TD-LTE System

作　　者：张莉[1] 

机构地区：[1]湖北大学知行学院,武汉430011

出　　处：《科技通报》2013年第8期43-46,共4页Bulletin of Science and Technology

摘　　要：研究了TD-LTE系统加性高斯白噪声环境下,LS信道估计、LMMSE信道估计、基于DFT的信道估计3种算法的原理。利用MATLAB搭建LTE系统下行仿真链路,分别在3GPP EPA5,EVA70和ETU300 3种信道环境下,测试了LS算法、DFT LS算法、LMMSE算法和DFT LMMSE算法的性能。结果表明,DFTLMMSE算法的性能比较优良,为实际TD-LTE系统下行链路的信道估计算法提供参考。LS, LMMSE and DFT channel estimation algorithm is studied under the condition of additive white Gauss noise in TD-LTE system. A LTE downlink simulation link is built using MATLAB, LS algorithm, DFT LS algorithm, LMMSE algorithm and DFT algorithm is tested in 3GPP EPAS, EVA70and ETU300 three kinds of channel environment. The results show that DFT LMMSE algorithm has better performance,which can provide reference for the actual TD-LTE system downlink channel estimation algorithm.

关 键 词：TD-LTE LS LMMSE DFT 

分 类 号：TN929.5[电子电信—通信与信息系统]