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Blind Extraction of Smooth Signals Based on a Second-Order Frequency Identification Algorithm

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3 Author(s)
Duarte, L.T. ; Gipsa-Lab., Inst. Polytech. de Grenoble, Grenoble, France ; Rivet, B. ; Jutten, C.

We propose a novel blind source separation method tailored for retrieving baseband signals having different bandwidths. Such a configuration is characterized by the existence of inactive bands in the frequency domain. By exploiting the eigenstructure of the mixtures covariance matrix calculated in these inactive bands, we develop a simple yet efficient extraction procedure that works in an ordered fashion, in which the sources are extracted according to their degree of smoothness. Numerical results attest the viability of the proposal.

Published in:

Signal Processing Letters, IEEE  (Volume:17 ,  Issue: 1 )