Doppler spread estimation for mobile OFDM systems in Rayleigh fading channels

被引:53
|
作者
Cai, JP [1 ]
Song, WT
Li, Z
机构
[1] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China
[2] Xidian Univ, Xian, Peoples R China
关键词
OFDM; doppler spread; channel estimation; ACM;
D O I
10.1109/TCE.2003.1261183
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, a technique based on the auto correlation function is proposed to estimate the Doppler spread in Rayleigh fading channels for mobile OFDM systems. It is simply implemented with the cyclic structure Of OFDM symbols, and any other additive data and pilots need not to be inserted into the common OFDM symbols. This algorithm can be applied directly to the OFDM system with transmit diversity (TD) and to MIMO OFDM systems. Computer simulation results are included to support our developments in the terms of mean estimation value and mean square error(1).
引用
收藏
页码:973 / 977
页数:5
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