Title :
A novel soft-in soft-out detection algorithm for space-time coded OFDM over multipath fading channels
Author :
Gallo, Antonio S. ; Vitetta, Giorgio M.
Author_Institution :
Dept. of Inf. Eng., Univ. of Modena & Reggio Emilia, Italy
fDate :
29 Nov.-3 Dec. 2004
Abstract :
A novel soft-in soft-out detector for space-time block coded OFDM systems operating over multipath fading channels is derived using the Bayesian expectation-maximization (BEM) technique. It exploits statistical information about the communication channel and can he easily incorporated in iterative receivers when outer coding is adopted at the transmitter. Numerical results evidence the efficacy of the proposed algorithm, even in the presence of significant channel variations.
Keywords :
Bayes methods; MIMO systems; OFDM modulation; block codes; channel coding; fading channels; iterative decoding; multipath channels; optimisation; parity check codes; radio receivers; space-time codes; Bayesian expectation-maximization technique; MIMO; block code; channel variations; communication channel; iterative receivers; low-density parity-check coding; multipath fading channels; outer coding; soft-in soft-out detection; soft-in soft-out detector; space-time coded OFDM; statistical information; transmitter; Bayesian methods; Block codes; Convolutional codes; Detection algorithms; Detectors; Fading; MIMO; OFDM; Parity check codes; Transmitters;
Conference_Titel :
Global Telecommunications Conference, 2004. GLOBECOM '04. IEEE
Print_ISBN :
0-7803-8794-5
DOI :
10.1109/GLOCOM.2004.1377968
