Title :
Performance of Two Dual-Branch Postdetection Switch-and-Stay Combining Schemes in Correlated Rayleigh and Rician Fading
Author :
Haghani, Sasan ; Beaulieu, Norman C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta.
fDate :
5/1/2007 12:00:00 AM
Abstract :
The performance of binary frequency-shift keying (BFSK) and M-ary frequency shift keying (MFSK) with dual-branch postdetection switch-and-stay combining (SSC) in correlated Rayleigh and Rician fading is studied. Two postdetection SSC receivers are considered and the performances of noncoherent BFSK and MFSK are analyzed. Closed-form expressions are derived for the average bit-error rate (BER) of BFSK and MFSK with postdetection SSC in correlated Rayleigh and Rician fading. Optimum switching thresholds that minimize the average BER are obtained. Extensive Monte Carlo simulations are presented to test the validity of the analytical results. The performance of dual-branch postdetection SSC is compared with the performance of dual-branch predetection SSC. The effects of correlation, fading parameter, average fading power imbalance, and switching threshold on the performances of postdetection SSC receivers are examined
Keywords :
Monte Carlo methods; Rayleigh channels; Rician channels; error statistics; frequency shift keying; BER; BFSK; M-ary frequency shift keying; MFSK; Monte Carlo simulations; Rician fading; binary frequency-shift keying; bit-error rate; correlated Rayleigh fading; dual-branch postdetection switch-and-stay combining; optimum switching thresholds; Bit error rate; Closed-form solution; Communication switching; Diversity reception; Fading; Frequency shift keying; Performance analysis; Rayleigh channels; Rician channels; Testing; Diversity combining; Rayleigh fading; Rician fading; fading channels; postdetection diversity; predetection diversity;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2007.896040
