Title :
Optimum Segmentation and Windowing in Nonparametric Power Spectral Density Estimation
Author :
Beheshti, Soosan ; Pal, Sudeshna
Author_Institution :
Ryerson Univ., Toronto
Abstract :
In averaging power spectral density (PSD) estimation methods, such as Bartlett and Welch approaches, segmented version of data is used. However, no systematic method for the choice of optimum segmentation is available. In this paper, we provide a novel approach to nonparametric PSD estimation that not only provides the optimum segmentation in these approaches, but also combines these approaches with a new optimum windowing within the segments. The desired criterion in this method is PSD mean square error that is estimated for windows and segments of different length. The new optimum windowing approach outperforms the existing nonparametric approaches.
Keywords :
mean square error methods; spectral analysis; PSD mean square error; nonparametric PSD estimation; nonparametric power spectral density estimation; optimum segmentation; optimum windowing; Autocorrelation; Convolution; Data engineering; Filters; Gaussian processes; Mean square error methods; Power engineering and energy; Power engineering computing; Random processes; Spectral analysis; Autocorrelation; estimation; periodogram; spectral analysis;
Conference_Titel :
Digital Signal Processing, 2007 15th International Conference on
Conference_Location :
Cardiff
Print_ISBN :
1-4244-0882-2
Electronic_ISBN :
1-4244-0882-2
DOI :
10.1109/ICDSP.2007.4288598