Group delay based approach for frequency estimation in complex noises

被引：0

作者：

Fu, Lihua ^{[1
]}

Li, Hongwei ^{[1
]}

Zhang, Meng ^{[2
]}

Shen, Yuantong ^{[1
]}

机构：

[1] China Univ Geosci, Sch Math & Phys, Wuhan 430074, Peoples R China

[2] Cent China Normal Univ, Dept Comp Sci, Wuhan, Peoples R China

来源：

SNPD 2007: EIGHTH ACIS INTERNATIONAL CONFERENCE ON SOFTWARE ENGINEERING, ARTIFICIAL INTELLIGENCE, NETWORKING, AND PARALLEL/DISTRIBUTED COMPUTING, VOL 3, PROCEEDINGS | 2007年

基金：

中国国家自然科学基金;

关键词：

frequency estimation; group delay; time-varying cumulants; high resolution;

D O I：

10.1109/SNPD.2007.235

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

A novel approach for frequency estimation of one-dimensional harmonics in multiplicative and additive noises is presented. To alleviate the resolution limitation of the traditional cumulant-based algorithms, group delay (GD) function is utilized. In this new approach, GD is applied to the 2nd order time-varying cumulants of harmonics in complex noises, called as the 2nd order CGD. For a given frequency estimation problem, this paper derives a simple and practical algorithm. Numerical results show that the sharp peak and high resolution property of GD preserved, which outperform some traditional methods greatly.

引用

页码：264 / +

页数：2

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