Distributed PARAFAC based DS-CDMA blind receiver for wireless sensor networks

Alain Kibangou (1, 2) , André L. F. de Almeida (3)

1 NECS - Networked Controlled Systems
2 GIPSA-lab - Grenoble Images Parole Signal Automatique
3 GTEL - Wireless Telecom Research Group [Fortaleza]

In this paper, we consider a collaborative scheme in wireless sensor networks where the multiple access protocol is a DS-CDMA one. When the receiver is equipped with an antenna array, it has been shown that efficient blind receivers can be derived using the PARAFAC tensor model. In general, the parameters of the PARAFAC model are fitted using an alternating least squares algorithm. Herein, we consider the case where each receiver has a single antenna. Therefore, by allowing collaboration in a predefined neighborhood, we derive a distributed alternating least squares algorithm including some average consensus steps.

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

Alain Kibangou, André L. F. de Almeida. Distributed PARAFAC based DS-CDMA blind receiver for wireless sensor networks. SPAWC 2010 - 11th IEEE International Workshop on Signal Processing Advances for Wireless Communications, Jun 2010, Marrakech, Morocco. pp.n.c. ⟨hal-00480584⟩