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Communications and Networking. 15th EAI International Conference, ChinaCom 2020, Shanghai, China, November 20-21, 2020, Proceedings

Research Article

An Accurate Frequency Estimation Algorithm by Using DFT and Cosine Windows

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  • @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
Jinyu Liu1, Lei Fan1,*, Renqing Li1, Wenbo He1, Nian Liu1, ZhanHong Liu1
  • 1: School of Information Science and Engineering
*Contact email: fanlei@dlpu.edu.cn

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.

Keywords
Frequency estimation Interpolation DFT Cosine windows Signal processing
Published
2021-02-02
Appears in
SpringerLink
http://dx.doi.org/10.1007/978-3-030-67720-6_47
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