Blind source separation in time frequency domain using contrast functions / Abdelkrim Bouchouata (2010)
Blind source separation in time frequency domain using contrast functions [texte imprimé] / Abdelkrim Bouchouata, Auteur ; Mohamed Arezki Adel Belouchrani, Directeur de thèse . - [S.l.] : [s.n.], 2010 . - 42 f. : ill. ; 30 cm. + 1 CD-ROM.
Mémoire de Magister : Electronique : Alger, Ecole Nationale Polytechnique : 2010
Bibliogr. f. 41 - 42
Langues : Anglais (eng)
Mots-clés : Blind source separation
Time-frequency distributions
Nonstationary signals
Iterative algorithms
Contrast functionsIndex. décimale : M003410 Résumé : This thesis presents the implementation of new blind source separation techniques exploiting the time-frequency signatures of the source signals.
The proposed approach relies on time-frequency distributions (TFD).
Two TFDbased contrast functions are presented for non-stationary sources.
Iterative algorithms using the relative gradient technique are used to optimize the proposed functions and perform source separaration.