We investigate the application of the Bayesian expectation-maximization (BEM) technique to the design of soft-in soft-out (SISO) detection algorithms for wireless communication systems operating over channels affected by parametric uncertainty. First, the BEM algorithm is described in detail and its relationship with the well-known expectation-maximization (EM) technique is explained. Then, some of its applications are illustrated. In particular, the problems of SISO detection of spread spectrum, single-carrier and multicarrier space-time block coded signals are analyzed. Numerical results show that BEM-based detectors perform closely to the maximum likelihood (ML) receivers endowed with perfect channel state information as long as channel variations are not too fast. © 2005 Hindawi Publishing Corporation.

Soft-in soft-output detection in the presence of parametric uncertainty via the bayesian em algorithm / Gallo, A. S.; Vitetta, G. M.. - In: EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING. - ISSN 1687-1472. - 2005:2(2005), pp. 100-116. [10.1155/WCN.2005.100]

Soft-in soft-output detection in the presence of parametric uncertainty via the bayesian em algorithm

Gallo A. S.;Vitetta G. M.
2005

Abstract

We investigate the application of the Bayesian expectation-maximization (BEM) technique to the design of soft-in soft-out (SISO) detection algorithms for wireless communication systems operating over channels affected by parametric uncertainty. First, the BEM algorithm is described in detail and its relationship with the well-known expectation-maximization (EM) technique is explained. Then, some of its applications are illustrated. In particular, the problems of SISO detection of spread spectrum, single-carrier and multicarrier space-time block coded signals are analyzed. Numerical results show that BEM-based detectors perform closely to the maximum likelihood (ML) receivers endowed with perfect channel state information as long as channel variations are not too fast. © 2005 Hindawi Publishing Corporation.
2005
2
100
116
Soft-in soft-output detection in the presence of parametric uncertainty via the bayesian em algorithm / Gallo, A. S.; Vitetta, G. M.. - In: EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING. - ISSN 1687-1472. - 2005:2(2005), pp. 100-116. [10.1155/WCN.2005.100]
Gallo, A. S.; Vitetta, G. M.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/1249079
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