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

Volume

11

fYear

2006

fDate

38869

Firstpage

5140

Lastpage

5144

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2006. ICC '06. IEEE International Conference on

Conference_Location

Istanbul

ISSN

8164-9547

Print_ISBN

1-4244-0355-3

Electronic_ISBN

8164-9547

Type

conf

DOI

10.1109/ICC.2006.255482

Filename

4024866