Title :
Novel diversity receivers in the presence of Gaussian channel estimation errors
Author :
Chen, Yunfei ; Beaulieu, Norman C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta.
Abstract :
Novel diversity receivers that operate in the presence of Gaussian channel estimation errors are proposed for L independent and identically distributed fading channels. Previous work concerned with channel estimation errors has mainly examined the performance of maximal ratio combining (MRC) with estimation errors. It is shown here that MRC is not optimal when estimation errors occur. Moreover, it is shown that better diversity receivers that operate in the presence of Gaussian channel estimation errors can be obtained by using knowledge of the channel estimate statistics. Numerical results show that the derived new diversity receivers can perform as much as 2.0 dB in signal-to-noise ratio better than the conventional MRC receiver in some cases
Keywords :
Gaussian channels; channel estimation; diversity reception; fading channels; radio receivers; Gaussian channel estimation; distributed fading channels; diversity receivers; maximal ratio combining; signal-to-noise ratio; Channel estimation; Diversity reception; Error analysis; Estimation error; Fading; Gaussian channels; Phase shift keying; Quadrature amplitude modulation; Signal to noise ratio; Statistical distributions;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2006.1687715
