Title :
BER of BFSK with Postdetection Switched Combining in Correlated Rayleigh Fading
Author :
Haghani, Sasan ; Beaulieu, Norman C.
Author_Institution :
Student Member, IEEE, Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta, Canada, T6G 2V4. E-mail: haghani@ece.ualberta.ca
Abstract :
The performance of binary frequency-shift keying (BFSK) with dual-branch postdetection switch and stay combining (SSC) in correlated Rayleigh fading is considered. A closedform expression for the average bit error rate (BER) of BFSK with dual-branch postdetection SSC is derived. Optimum switching thresholds that minimize the average BER are obtained. It is shown that, for a fixed value of average signal-to-noise ratio (SNR), the optimum switching threshold is a decreasing function of branch correlation. Our analytical results are validated using Monte Carlo simulation results. The performance of dual-branch postdetection SSC is compared to the performance of dual-branch predetection SSC in correlated Rayleigh fading and it is shown that postdetection SSC has superior performance over predetection SSC for all values of SNR.
Keywords :
Bit error rate; Closed-form solution; Diversity reception; Fading; Frequency shift keying; Monitoring; Rayleigh channels; Signal to noise ratio; Switches; Wireless communication; Diversity combining; Rayleigh; fading channels; postdetection diversity; predetection diversity;
Conference_Titel :
Communications, 2006. ICC '06. IEEE International Conference on
Conference_Location :
Istanbul
Print_ISBN :
1-4244-0355-3
Electronic_ISBN :
8164-9547
DOI :
10.1109/ICC.2006.255482
