Title :
A multitime-frequency approach for detection and classification of neighboring instantaneous frequency laws in a noisy environment
Author :
Colas, Maxime ; Gelle, Guillaume
Author_Institution :
Lab. of Decision & Commun. Syst., Reims, France
Abstract :
Recently, time-varying higher order spectra (TVHOS) have been defined to analyze nonlinear nonstationary signals. In this letter, a new detection/classification algorithm based on TVHOS is proposed and applied to frequency-modulated (FM) signals disrupted by multiplicative and additive noise. Simulations indicate the superiority of this approach for classification purpose compared with the classical Wigner Spectrum scheme.
Keywords :
AWGN; frequency modulation; higher order statistics; signal classification; signal detection; spectral analysis; additive noise; detection algorithm; frequency-modulated signals; instantaneous frequency laws; multiplicative noise; multitime frequency representations; noisy environment; nonlinear nonstationary signals; signal classification; time-varying higher order spectra; Additive noise; Additive white noise; Detectors; Frequency estimation; Gaussian noise; Performance analysis; Signal analysis; Speech analysis; Transient analysis; Working environment noise;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2003.821656
