Superimposed-pilot-aided channel estimation for mobile OFDM

被引：7
|
作者：
Yang, Q. [1 ]
Kwak, K. S. [1 ]
机构：
[1] Inha Univ, Telecommun Engn Lab, Grad Sch Informat Technol & Telecommun, Inchon 402751, South Korea
来源：
ELECTRONICS LETTERS | 2006年 / 42卷 / 12期
关键词：
D O I：
10.1049/el:20060758
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 superimposed-pilot-based channel estimation scheme for mobile orthogonal frequency division multiplexing systems is investigated. First, a least square estimator is developed to obtain some temporary channel estimates; meanwhile optimal pilot symbols are proposed with respect to the channel estimates' mean square error. Final estimation is then computed by smoothing these temporary results. As shown in simulations, the proposed channel estimation approach achieves not only better performance but also higher spectrum efficiency than that of the conventional pilot-aided method.
引用
收藏
页码：722 / 724
页数：3
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