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In this paper we consider the estimation of the frequency of a complex exponential in noise. This problem is of prime significance in many signal processing applications. In particular, we focus on robust low computational complexity estimators that rely on the highly efficient FFT algorithm. We generalise a number of interpolators to the zero-padded case and derive both their interpolation expressions...
The estimation of the parameters of a decaying complex exponential in noise was examined by Bertocco et al. who developed a frequency domain interpolator using two DFT coefficients around the maximum bin. Quinn, on the other hand, and more recently Aboutanios and Mulgrew (A&M), proposed similar frequency estimators for the undamped case. In this paper, we adapt the Quinn and A&M algorithms...
The accuracy of the frequency estimation of a multifrequency signal component by Interpolated Discrete Fourier Transform (IpDFT) method is affected by systematic errors. In a Weighted Multipoint Interpolated Discrete Fourier Transform (WMIpDFT) method has been proposed in order to reduce these errors. This method uses only the rectangular and the 2-term maximum sidelobe decay windows. In this paper...
Based on the "half stock fence"-interpolated FFT coefficients of a single-tone sequence, this paper presents a novel frequency estimation iteration algorithm starting with the Rife-Jane's estimator, which develops a symmetry frequency offset estimator and employs adaptive adjustment technique of the symmetric center. Computer Monte-Carlo simulations show that the algorithm is effective and...
Orthogonal frequency division multiplexing (OFDM) is the modulation scheme of choice for digital video broadcasting-handheld (DVB-H) which is required to operate under high mobility conditions resulting in significant Inter-Carrier Interference (ICI). Under these conditions, the conventional one-tap per subcarrier channel estimation and equalization is suboptimal since it does not account for ICI...
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