A Low Complexity Channel Estimation Method for MIMO-OFDM Systems

被引：2
作者：
Huo, Wenjun [1 ]
Wang, Zhigang [1 ]
Li, Shentang [1 ]
机构：
[1] Informat Engn Univ, Inst Informat Engn, PLA, Zhengzhou 450002, Peoples R China
来源：
2007 INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS, NETWORKING AND MOBILE COMPUTING, VOLS 1-15 | 2007年
关键词：
MIMO; OFDM; Channel estimation; Training sequence; Hadamard matrix;
D O I：
10.1109/WICOM.2007.14
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A method of channel estimation based on training sequences is proposed for MIMO-OFDM systems. Moreover, the criterion is derived by simplified means for optimum training sequences construction. Based on the criterion, two methods are proposed for construction of optimum training sequences. Computer simulations are conducted to evaluate the channel estimation and optimum training sequences construction methods for TU and HT delay profiles.. Simulation results show that the proposed channel estimation method has the same estimation accuracy as type traditional methods. However, the computational complexity is reduced greatly. It is also shown that the optimum training sequences constructed by the Hadamard matrix enhance channel estimation with the estimation accuracy improvement by 2dB.
引用
收藏
页码：29 / 32
页数：4
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