Reference based contrast functions in a semi-blind context

Marc Castella (1, 2, 3, 4) , Eric Moreau (5, 6)

1 TIPIC-SAMOVAR - Traitement de l'Information Pour Images et Communications
2 TSP - CITI - Communications, Images et Traitement de l'Information
3 SAMOVAR - Services répartis, Architectures, MOdélisation, Validation, Administration des Réseaux
4 CNRS - Centre National de la Recherche Scientifique
5 ISITV - Institut des Sciences de l'Ingénieur de Toulon et du Var
6 LSEET - Laboratoire de sondages électromagnétiques de l'environnement terrestre

We deal with blind signal extraction in the framework of a convolutive mixture of independent sources. Considering so-called reference signals, we generalize former identifiability conditions. Based on this result, we propose to incorporate some a priori information in the references. We show the validity of reference based contrast functions in two semi-blind situations. The results are confirmed by computer simulations

Domaines: Traitement du signal et de l'image [eess.SP]

Marc Castella, Eric Moreau. Reference based contrast functions in a semi-blind context. ICA 2009 : 8th International Conference on Independent Component Analysis and Signal Separation, Mar 2009, Paraty, Brazil. pp.9 - 16, ⟨10.1007/978-3-642-00599-2_2⟩. ⟨hal-00442759⟩