High accuracy peak location and amplitude spectral estimation via tuning APES method

Authors:
Kenny Seungwoo Ryu;Moe Sepehrifar;Ahmed A. Kishk
Affiliations:
Department of Electrical Engineering, University of Mississippi, Mississippi, United States;Department of Mathematics, University of Mississippi, Mississippi, United States;Department of Electrical Engineering, University of Mississippi, Mississippi, United States
Venue:
Digital Signal Processing
Year:
2010

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Abstract

In this paper, we introduce a new approach to the method of non-parametric adaptive spectral analysis by using the Amplitude and Phase Estimation (APES) method, and taking into account the small sample errors of the sample covariance matrix. This approach is referred to as Adaptive Tuning Amplitude and Phase Estimation method (ATAPES). The main advantage of the ATAPES algorithm is its elimination of biased estimation exists with APES method, which is a biased peak location and corresponding problem of the biased amplitude estimation. The ATAPES method provides more accurate peak location and amplitude estimation with higher resolution than APES method.