Title :
Transient detection in non-Gaussian noise by wavelet packet transform
Author :
Datta, Vishaka ; Anand, G.V.
Author_Institution :
Dept. of Math., Indian Inst. of Technol., Kharagpur, India
Abstract :
An algorithm based on wavelet packet transform is proposed for detecting a deterministic transient signal with unknown parameters in non-Gaussian noise. Expressions for probability of detection and probability of false alarm are derived, and performance results are presented in the form of ROC plots for detection of damped sinusoids in different noise distributions. It is shown that, for Gaussian noise, the performance of the proposed WPT detector is much better than that of the generalized likelihood ratio test (GLRT)-based detector. Variation of performance of the WPT detectors with different noise distributions and detector parameters is also investigated.
Keywords :
Gaussian noise; maximum likelihood detection; statistical distributions; wavelet transforms; ROC plots; WPT detector; damped sinusoids; detection probability; detector parameters; deterministic transient signal; false alarm probability; generalized likelihood ratio test-based detector; noise distributions; nonGaussian noise; transient detection; wavelet packet transform; Detectors; Gaussian noise; Transient analysis; Wavelet packets;
Conference_Titel :
Signal Processing and Communications (SPCOM), 2010 International Conference on
Conference_Location :
Bangalore
Print_ISBN :
978-1-4244-7137-9
DOI :
10.1109/SPCOM.2010.5560494
