Efficient MIMO channel estimation using complementary sequences

被引：40
|
作者：
Wang, H. M. [1 ]
Gao, X. Q.
Jiang, B.
You, X. H.
Hong, W.
机构：
[1] Southeast Univ, Natl Mobile Commun Res Lab, State Key Lab Millimeter Waves, Nanjing 210096, Peoples R China
[2] Southeast Univ, Sch Informat Sci & Engn, Nanjing 210096, Peoples R China
来源：
IET COMMUNICATIONS | 2007年 / 1卷 / 05期
关键词：
Algorithms - Computational methods - Least squares approximations - Mean square error - Time varying networks;
D O I：
10.1049/iet-com:20060581
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：
Low complexity channel estimation for single-carrier block transmission systems over multiple-input multiple-output time varying frequency-selective channels is investigated. A time slot structure that uses Golay complementary sequences with perfect periodic autocorrelations as two-sided pilot blocks is presented. Employing this strucutre, optimal least square estimate in the minimum mean square error (MMSE) sense is achieved. Furthermore, a computationally efficient algorithm which is named as fast periodic Golay correlation is proposed based on the specific generator and the properties related to circulant matrices. Finally, the simulation results show the MMSE performance of the proposed scheme and algorithm.
引用
收藏
页码：962 / 969
页数：8
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