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
收藏
页码：264 / +
页数：2
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