Résumé: We propose an iterative receiver algorithm to cope with nonstationary cochannel interference, as e.g. arising in wireless ad hoc networks with uncoordinated channel access. The receiver incorporates an adaptive beamforming by a sample matrix inversion (SMI) technique on the information-bearing signals from an array antenna, and an a posteriori probability (APP) computation. The APPs are utilized to successively reconstruct and eliminate the reliably decoded signal parts from the samples. This allows to perform the SMI on a small number of snapshots, for the sake of adaptability, while evading a dramatic performance degradation due to the presence of the signal of interest.

Langue: Anglais