Sparse channel estimation in OFDM systems by threshold-based pruning

被引：33
|
作者：
Oliver, J. [1 ]
Aravind, R. [1 ]
Prabhu, K. M. M. [1 ]
机构：
[1] Indian Inst Technol Madras, Dept Elect Engn, Madras 600036, Tamil Nadu, India
来源：
ELECTRONICS LETTERS | 2008年 / 44卷 / 13期
关键词：
D O I：
10.1049/el:20081089
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 threshold-based procedure to estimate sparse channels in an orthogonal frequency division multiplexing (OFDM) system is proposed. An optimal threshold is derived by maximising the probability of correct detection between significant and zero-valued taps estimated by the least squares (LS) estimator. Improved LS estimates are obtained by pruning the LS estimates with the statistically derived threshold.
引用
收藏
页码：830 / +
页数：2
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