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A new simple frequency estimator is presented which performs FFT-based coarse and DFT-based dichotomous fine searching of the periodogram peak. The proposed estimator is shown to have a frequency error close to that of the maximum likelihood (ML) estimator and a lower complexity than that of known estimators.
Inspec keywords: fast Fourier transforms; discrete Fourier transforms; frequency estimation; search problems; signal processing
Other keywords:
Subjects: Simulation, modelling and identification; Signal processing and detection; Integral transforms in numerical analysis; Signal processing theory; Other topics in statistics; Integral transforms; Integral transforms; Other topics in statistics; Integral transforms in numerical analysis