A Fine Resolution Frequency Estimator Based on Double Sub-segment Phase Difference

被引：14

作者：

Huang, Xiangdong ^{[1
]}

Xia, Xiang-Gen ^{[2
]}

机构：

[1] Tianjin Univ, Sch Elect & Informat Engn, Tianjin 300072, Peoples R China

[2] Univ Delaware, Dept Elect & Comp Engn, Newark, DE 19716 USA

来源：

IEEE SIGNAL PROCESSING LETTERS | 2015年 / 22卷 / 08期

关键词：

DFT; frequency estimator; phase difference; FOURIER COEFFICIENTS; INTERPOLATION;

D O I：

10.1109/LSP.2014.2385086

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 DFT-based frequency estimator with low computational complexity is proposed, which is derived by extracting the phase difference from the peak DFT bins of two sub-segments from input samples. Some of its statistical properties, such as asymptotical unbiasedness and error variance, are derived. Furthermore, an iterative procedure of frequency estimate is also presented. Simulation results show that the proposed estimator's accuracy is close to those of AM estimator and CO estimator.

引用

页码：1055 / 1059

页数：5

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