Low-complexity channel and frequency offset estimation in MIMO systems

被引：1
|
作者：
Hemesi, H. [1 ]
Azami, F. [1 ]
Ghorssi, A. [1 ]
Abdipour, A. [1 ]
Mohammadi, A. [1 ]
机构：
[1] Amirkabir Univ Technol, Dept Elect Engn, Tehran, Iran
来源：
ELECTRONICS LETTERS | 2008年 / 44卷 / 09期
关键词：
D O I：
10.1049/el:20080122
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：
A low-complexity approach to the joint estimation of frequency offset and channel matrix in a MIMO flat-fading channel using a training sequence is presented. The frequency offsets for all transmit antennas are assumed to be equal. The proposed algorithm first computes an initial estimation. This estimation is good enough for most applications. To increase the accuracy of the estimation, approximation of ML function around its maximum point and finding the maximum point analytically is suggested. Simulation results are performed for a 4 x 4 MIMO system to show the effectiveness of the algorithm.
引用
收藏
页码：599 / +
页数：2
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