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

Volume

3

Issue

5

fYear

2004

Firstpage

1533

Lastpage

1542

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;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2004.833518

Filename

1343890