Accurate estimation method of sinusoidal frequency based on FFT

In order to further improve the estimation precision of sinusoidal frequency, a new estimation method based on Fast Fourier Transform (FFT) is proposed. Zero-padding is used before the coarse estimation. And three sample values of Discrete-Time Fourier Transform (DTFT) of the original signal is used...

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Bibliographic Details
Published in2016 35th Chinese Control Conference (CCC) pp. 5164 - 5167
Main Authors Fan, Lei, Qi, Guoqing, He, Wenbo
Format Conference Proceeding Journal Article
LanguageEnglish
Published TCCT 01.07.2016
Subjects
Computer simulation
Conferences
Cramer-Rao bounds
Discrete Fourier transforms
Estimation
Estimators
FFT
Fourier transforms
Frequency estimation
Offsets
signal processing
Signal to noise ratio
Thresholds
Time-frequency analysis
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Summary:In order to further improve the estimation precision of sinusoidal frequency, a new estimation method based on Fast Fourier Transform (FFT) is proposed. Zero-padding is used before the coarse estimation. And three sample values of Discrete-Time Fourier Transform (DTFT) of the original signal is used to perform the fine estimation. In the computer simulations, it can be shown that the proposed estimation method follows the Cramer-Rao Bound in the whole region of frequency offset. The estimation precision is higher than the existing estimators. The proposed estimator has low SNR threshold, and outperforms the existing estimators.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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SourceType-Conference Papers & Proceedings-2
ISSN:2161-2927
1934-1768
DOI:10.1109/ChiCC.2016.7554156