Title :
Soft decision-directed MAP estimate of fast Rayleigh flat fading channels
Author :
Yan, Ming ; Rao, Bhaskar D.
Author_Institution :
Center for Wireless Commun., California Univ., San Diego, La Jolla, CA, USA
Abstract :
An iterative receiver with soft-decision feedback is derived by using the expectation-maximization algorithm for maximum a posteriori estimate of fast Rayleigh flat fading channels. Simulation results indicate that in a fast fading environment, the derived receiver can perform better than an iterative receiver with hard-decision feedback.
Keywords :
Rayleigh channels; channel estimation; iterative methods; maximum likelihood estimation; radio receivers; MAP estimation; Rayleigh fading channels; channel estimation; expectation-maximization algorithm; fast fading channels; flat fading channels; hard-decision feedback; iterative receiver; maximum a posteriori estimation; soft decision-directed estimation; soft-decision feedback; Channel estimation; Fading; Feedback; Hidden Markov models; Intersymbol interference; Iterative algorithms; Maximum a posteriori estimation; Maximum likelihood detection; Maximum likelihood estimation; Rayleigh channels;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2003.820725
