Title :
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
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;
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
DOI :
10.1109/GLOCOM.2007.683
