Multicomponent AM-FM signal separation and demodulation with null space pursuit

被引：22

作者：

Hu, Xiyuan ^{[1
]}

Peng, Silong ^{[1
]}

Hwang, Wen-Liang ^{[2
,3
]}

机构：

[1] Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China

[2] Acad Sinica, Inst Informat Sci, Taipei 11529, Taiwan

[3] Kainan Univ, Dept Informat Management, Tao Yuan 33857, Taoyuan County, Taiwan

来源：

SIGNAL IMAGE AND VIDEO PROCESSING | 2013年 / 7卷 / 06期

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

Adaptive signal separation; Null space pursuit (NSP); Multicomponent AM-FM signals; Signal demodulation; EMPIRICAL MODE DECOMPOSITION; TIME-FREQUENCY; ENERGY; REPRESENTATIONS; WAVELET;

D O I：

10.1007/s11760-012-0354-9

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：

The operator-based signal separation approach, which formulates signal separation as an optimization problem, uses an adaptive operator to separate a signal into additive subcomponents. Furthermore, it is possible to design different operators to fit different signal models. In this paper, we propose a new kind of differential operator to separate multicomponent AM-FM signals. We then use the estimated operators to calculate each sub-component's envelope and instantaneous frequency. To demonstrate the efficacy of the proposed method, we compare the decomposition and AM-FM demodulation results of several signals, including real-life signals.

引用

页码：1093 / 1102

页数：10

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