Impact of Noise Imbalance on the Performance of Predetection Dual-EGC Receivers Over Rayleigh Fading Channels

Author

Patel, Prabhat ; Chaturvedi, A.K.

Author_Institution

Indian Inst. of Technol., Kanpur

fYear

2007

fDate

26-30 Nov. 2007

Firstpage

3596

Lastpage

3600

Abstract

A new expression for the probability density function of the signal-to-noise ratio (SNR) at the output of a predetection dual-equal-gain-combining (dual-EGC) receiver over independent but non-identical Rayleigh fading paths with different noise levels is derived. A closed-form expression for the average bit error rate (ABER) for coherent binary modulation schemes is also derived. The effect of the degree of noise imbalance on ABER is studied. From the results we determine the ranges of noise imbalance for a given average SNR per path over which the performance of predetection dual-EGC is better or worse than SC and single path receivers.

Keywords

Rayleigh channels; error statistics; modulation; receivers; Rayleigh fading channels; average bit error rate; coherent binary modulation schemes; dual-equal-gain-combining receiver; noise imbalance; nonidentical Rayleigh fading; predetection dual-EGC receivers; probability density function; signal-to-noise ratio; Additive white noise; Closed-form solution; Diversity methods; Diversity reception; Fading; Gaussian noise; Noise level; Performance analysis; Rayleigh channels; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 2007. GLOBECOM '07. IEEE

Conference_Location

Washington, DC

Print_ISBN

978-1-4244-1042-2

Electronic_ISBN

978-1-4244-1043-9

Type

conf

DOI

10.1109/GLOCOM.2007.683

Filename

4411593