Fast Frequency Estimation Algorithm by Least Squares Phase Unwrapping

被引：9
|
作者：
Xu, Zhengguang [1 ]
Lu, Tianqi [1 ]
Huang, Benxiong [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Elect Informat & Commun, Wuhan 430074, Peoples R China
来源：
IEEE SIGNAL PROCESSING LETTERS | 2016年 / 23卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Frequency estimation; least squares; phase unwrapping;
D O I：
10.1109/LSP.2016.2555933
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：
Phase unwrapping is one of the frequency estimation methods, which performs linear regression (LR) on the unwrapped phase of the single sinusoid signal. The least squares phase unwrapping estimator (LSPUE) is proved to have the same performance as the classical periodogram estimator, but the available algorithm has the computational complexity as high as O(N-3 log N). A fast LSPUE algorithm is investigated in this letter, which has the same performance as the available LSPUE, but the computational complexity is as low as O(N-2).
引用
收藏
页码：776 / 779
页数：4
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