Title :
Maximum likelihood estimation of the K factor in Ricean fading channels
Author :
Chen, Yunfei ; Beaulieu, Norman C.
Author_Institution :
Dept. of Electr. & Comput. Eng, Alberta Univ., Edmonton, Alta., Canada
Abstract :
Estimation of the K factor in a Ricean fading channel is studied. Unlike most previous estimators which employ exclusively samples of the fading envelope, new maximum likelihood estimators that use samples of both the fading envelope and the fading phase, or samples of the fading phase only, are derived and examined. Simulation results show that these estimators have good performances when operating in a Ricean fading channel, and in some cases outperform envelope-sample-based estimators.
Keywords :
Rician channels; channel estimation; maximum likelihood estimation; K factor estimation; Ricean fading channel; fading envelope; fading phase; maximum likelihood estimator; Diffraction; Fading; Frequency estimation; Maximum likelihood estimation; Phase estimation; Random variables; Rayleigh channels; Reflection; Scattering; Wireless communication;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2005.1576581
