Title :
A BEM-based algorithm for soft-in soft-output detection of co-channel signals
Author :
Gallo, Antonio Stanislao ; Vitetta, Giorgio M. ; Chiavaccini, Eugenio
Author_Institution :
Dept. of Inf. Eng., Univ. of Modena & Reggio Emilia, Italy
Abstract :
In this paper, a soft-in soft-out multiuser detector for synchronous 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. Performance results for both uncoded and coded phase shift keying transmissions show the efficacy of the proposed multiuser detection technique over slowly time-varying fading channels in a two-user system.
Keywords :
Bayes methods; Rayleigh channels; modulation coding; multiuser detection; optimisation; phase shift keying; time-varying channels; Bayesian expectation maximization; cochannel signal detection; coded phase shift keying transmission; frequency-flat Rayleigh-fading channels; multiuser detection; soft-in soft-output detection; synchronous co-channel signals; time-varying fading channels; uncoded phase shift keying transmission; Bayesian methods; Detectors; Fading; Frequency; Multiuser detection; Narrowband; Phase shift keying; Rayleigh channels; Receiving antennas; Signal detection; Co-channel signals; EM; algorithm; expectation–maximization; fading channels; multiuser detection;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2004.833518
