ESTIMATION OF BASIS EXPANSION MODELS FOR DOUBLY SELECTIVE CHANNELS

被引：0
|
作者：
Liu Yingnan Gao Yonghui Zhang Nu* Liang Qinglin (School of Electronics Engineering and Computer Science
机构：
来源：
Journal of Electronics(China) | 2008年 / 01期
基金：
中国国家自然科学基金;
关键词：
Channel estimation; Doubly selective channel; Basis Expansion Model (BEM); Mean- square error;
D O I：
暂无
中图分类号：
TN925 [无线电中继通信、微波通信];
学科分类号：
080402 ; 080904 ; 0810 ; 081001 ;
摘要：
By analyzing the relationship between Basis Expansion Model (BEM) and Doppler spectrum, this letter proposed a quasi-MMSE-based BEM estimation scheme for doubly selective channels. Based on the assumption that the basis coefficients are approximately independent and have the same variance for the same channel tap, the quasi-MMSE estimation shows approximately optimal performance and is robust to noise. Moreover, it can avoid a high Peak-to-Average Power Ratio (PAPR) by using continuous pilots. Performance of the proposed estimation scheme has been shown with computer simulations.
引用
收藏
页码：115 / 119
页数：5
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