Accurate Frequency Estimation With Fewer DFT Interpolations Based on Padé Approximation
Accurate Frequency Estimation With Fewer DFT Interpolations Based on Padé Approximation
Frequency estimation is a fundamental problem in many areas. The well-known A&M and its variant estimators have established an estimation framework by iteratively interpolating the discrete Fourier transform (DFT) coefficients. In general, those estimators require two DFT interpolations per iteration, have uneven initial estimation performance against frequencies, and are incompetent …