Research Article
An Accurate Frequency Estimation Algorithm by Using DFT and Cosine Windows
@INPROCEEDINGS{10.1007/978-3-030-67720-6_47, author={Jinyu Liu and Lei Fan and Renqing Li and Wenbo He and Nian Liu and ZhanHong Liu}, title={An Accurate Frequency Estimation Algorithm by Using DFT and Cosine Windows}, proceedings={Communications and Networking. 15th EAI International Conference, ChinaCom 2020, Shanghai, China, November 20-21, 2020, Proceedings}, proceedings_a={CHINACOM}, year={2021}, month={2}, keywords={Frequency estimation Interpolation DFT Cosine windows Signal processing}, doi={10.1007/978-3-030-67720-6_47} }- Jinyu Liu
Lei Fan
Renqing Li
Wenbo He
Nian Liu
ZhanHong Liu
Year: 2021
An Accurate Frequency Estimation Algorithm by Using DFT and Cosine Windows
CHINACOM
Springer
DOI: 10.1007/978-3-030-67720-6_47
Abstract
Sinusoidal signal frequency estimation is one of the fundamental problems in signal processing, and it is widely used in wireless communication, signal processing, navigation, radar and so on. In this paper, an interpolation frequency estimation algorithm based on Discrete Fourier Transform (DFT) and cosine windows is proposed. Firstly, the sampling sequence of the signal is multiplied by a cosine window. Then,N-point DFT is used to search the position of the maximum spectral line and get the coarse estimation of frequency. Finally, the accurate frequency estimation is obtained by DFT interpolation of the maximum spectral line and the two Discrete-Time Fourier Transform (DTFT) samples on the left and right of the maximum spectral line. According to the simulation results, the performance of the proposed algorithm is better than that of MV-IpDTFT(3) algorithm, MV-IpDTFT(2) algorithm and Candan algorithm. The effect of harmonic interference on the frequency estimation results can be effectively suppressed.
