Amplitude bias and its elimination in sparse signal representation

被引：0

作者：

Cheng, Ping ^{[1
]}

Zhao, Jia-Qun ^{[2
]}

Jiang, Yi-Cheng ^{[3
]}

Xu, Rong-Qing ^{[3
]}

机构：

[1] College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China

[2] College of Science, Harbin Engineering University, Harbin 150001, China

[3] Research Institute of Electronic Engineering Technology, Harbin Institute of Technology, Harbin 150001, China

来源：

Harbin Gongye Daxue Xuebao/Journal of Harbin Institute of Technology | 2008年 / 40卷 / 09期

关键词：

Frequency estimation - Signal processing;

D O I：

暂无

中图分类号：

TN911 [通信理论];

学科分类号：

081002 ;

摘要：

In parallel basis selection algorithms of sparse signal representation, there will be serious bias in amplitude estimation when frequency is not in grid. To eliminate the bias, an effective method is given in the paper. In the method, the amplitude estimation is obtained by optimization in the neighboring region after obtaining an accurate frequency estimation. Applying the method into simulating signals of different signal-to-noise ratios, the estimation performance is good. Therefore the method is an effective method to eliminate the bias in amplitude in sparse signal representation.

引用

页码：1506 / 1508

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