Title :
MAP symbol estimation on frequency-flat Rayleigh fading channels via a Bayesian EM algorithm
Author :
Chiavaccini, Eugenio ; Vitetta, Giorgio M.
Author_Institution :
Dept. of Eng. Sci., Modena Univ., Italy
Abstract :
In this paper an expectation-maximization (EM) technique for maximum a posteriori (MAP) estimation is employed to devise novel soft-in soft-out (SISO) algorithms for symbol detection over frequency-flat Rayleigh fading channels. An application of these algorithms to iterative decoding of coded PSK signals is proposed and some performance results are illustrated
Keywords :
Bayes methods; Rayleigh channels; convolutional codes; interleaved codes; iterative decoding; maximum likelihood estimation; modulation coding; optimisation; phase shift keying; signal detection; Bayesian EM algorithm; MAP symbol estimation; MLE; SISO algorithms; expectation-maximization; frequency-flat Rayleigh fading channels; interleaved convolutionally encoded PSK signals; iterative decoding; maximum a posteriori estimation; maximum likelihood estimation; soft-in soft-out algorithms; symbol detection; Bayesian methods; Chirp modulation; Digital communication; Fading; Frequency estimation; Iterative algorithms; Iterative decoding; Maximum likelihood detection; Maximum likelihood estimation; Phase shift keying;
Conference_Titel :
Communications, 2001. ICC 2001. IEEE International Conference on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-7097-1
DOI :
10.1109/ICC.2001.936804
