Multipoint Interpolated DFT Method for Frequency Estimation

Abstract : The accuracy of the normalized frequency estimation of a mul- tifrequency signal component by Interpolated Discrete Fourier Transform (IpDFT) method is affected by systematic errors. In [1], a Weighted Multipoint Interpolated Discrete Fourier Trans- form (WMIpDFT) method has been proposed to reduce these errors. This method uses only the rectangular and the 2-term maximum sidelobe decay windows. In this paper, the results of the method proposed in [1] are generalized to the maximum sidelobe decay windows with order higher than two. When the H-term maximum sidelobe decay window (H ≥ 2) is used and the number of interpolation points is set to (2J + 1), the expres- sion of the normalized frequency estimator is given. Then, the performance of the proposed WMIpDFT method is analyzed by means of computer simulations and experimental results.
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https://hal.archives-ouvertes.fr/hal-00567400
Contributor : Dominique Dallet <>
Submitted on : Monday, February 21, 2011 - 10:38:37 AM
Last modification on : Thursday, January 11, 2018 - 6:21:07 AM

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  • HAL Id : hal-00567400, version 1

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Daniel Belega, Dominique Dallet. Multipoint Interpolated DFT Method for Frequency Estimation. Transactions on Systems, Signals and Devices - Shaker Verlag Gmbh, 2010, pp.1-16. ⟨hal-00567400⟩

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