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BEM-based SISO detection of space-time block coded signals transmitted over frequency-flat fading channels

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4 Author(s)
Chiavaccini, E. ; Dept. of Inf. Eng., Modena Univ., Italy ; Gallo, A.S. ; Muratori, F. ; Vitetta, G.M.

In this paper the expectation-maximization (EM) algorithm for maximum a posteriori (MAP) estimation of a random vector is applied to the problem of detection of space-time block coded (STBC) signals over time-selective Rayleigh fading channels. This results in a soft-in soft-out (SISO) detection algorithm suitable for iterative detection/decoding schemes. Simulation results show that the error performance of the proposed detection algorithm is very close to that of a MAP detector endowed with an ideal knowledge of the channel state if the fading rate is not too fast.

Published in:

Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE  (Volume:1 )

Date of Conference:

17-21 Nov. 2002