Title :
On decorrelation in dual-branch diversity systems
Author :
Haghani, Sasan ; Beaulieu, Norman C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of South Alabama, Mobile, AL, USA
fDate :
7/1/2009 12:00:00 AM
Abstract :
The performance of a dual-branch decorrelator receiver operating in correlated Rayleigh and Rician fading channels in conjunction with selection combining (SC) and switch-and-stay combining (SSC) is analyzed and compared to the performance of a conventional SC and SSC receiver. For each combining scheme, analytical expressions for the average bit error rate (BER) of several modulation techniques of practical interest, the mean output signal-to-noise ratio (SNR) and the outage probability are derived. It is shown that the decorrelator receiver has superior performance over the conventional receiver by as much as 2.83 dB in average SNR. The effects of modulation order, correlation coefficient and the severity of fading on the performance of the decorrelator receiver are studied.
Keywords :
Rayleigh channels; Rician channels; correlation methods; diversity reception; error statistics; radio receivers; Rayleigh fading channels; Rician fading channels; SSC receiver; analytical expressions; bit error rate; correlation coefficient; dual-branch decorrelator receiver; dual-branch diversity systems; outage probability; selection combining; signal-to-noise ratio; switch-and-stay combining; Bit error rate; Decorrelation; Diversity methods; Diversity reception; Fading; Performance analysis; Power generation economics; Rayleigh channels; Rician channels; Signal to noise ratio; Diversity combining, fading channels, Rayleigh fading, Rician fading, selection combining, switch-and-stay combining;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2009.07.070503
