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FFT-Based Moving Average Maximum Likelihood Single-tone Frequency Estimation |
Huang Yu-chun; Huang Zai-lu; Huang Ben-xiong; Xu Shu-hua |
Dept. of Electronics & Information, Huazhong Univ. of Science and Technology, Wuhan 430074, China |
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Abstract Based on the FFT of a single-tone sequence, this paper presents a novel Moving Average Maximum Likelihood (MAML) frequency estimator, which develops a Moving Average (MA) model by the real part relationship between different significant FFT coefficients firstly and a MA model-based maximum likelihood estimation technique. Simulation results show that the algorithm is effective and the proposed estimator outperforms the traditional Rife’s and Quinn’s estimator in both accuracy and the CRLB approximate RMSE of estimation. It is also shown that MAML has the merit of little computation effort and as lower SNR threshold as to -9dB.
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Received: 18 October 2006
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