A novel bem-based multiuser detector for co-channel signals transmitted over frequency-flat fading channels

Abstract

In this paper a novel soft-in soft-out (SISO) multiuser detector for co-channel signals transmitted over frequency-flat Rayleigh fading channels is described. The derivation of the proposed algorithm is based on a generalization of the expectation-maximization (EM) algorithm, called Bayesian EM (BEM). Performance results for both uncoded and coded PSK transmissions show the efficacy of the proposed multiuser detection technique over slowly time-varying fading channels in a two user system.