DECODING OF THE FSK SIGNAL WITH NOISE AND DISTORTION WITH THE USE OF COEFFICIENTS OF THE TIME-FREQUENCY TRANSFORM

Dorota Rabczuk, Beata Pałczyńska, Ludwik Spiralski

Abstract

The coefficients of wavelet packet decomposition of the signal represent the components of the instantaneous spectrum. For the FSK signal which consists of two instantaneous frequencies <i>f</i>₀ + d<i>f</i> and <i>f</i>₀ - d<i>f</i> thresholding and weighing of the absolute values of decomposition coefficients at properly selected nodes shows which of the two frequencies was present in the spectrum at a time interval. In the proposed algorithm more than one vector of coefficients represent each frequency for better distinguishing the instantaneous frequencies.

Download

IMEKO-TC4-2004-056.pdf

DOI

-

IMEKO TC

TC4 - Measurement of Electrical Quantities

Back to the proceedings