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Summary: Dual Selection Diversity SNR Performance in Spatially Correlated
Scattering Environments
Jaunty T.Y. Ho, Rodney A. Kennedy and Thushara D. Abhayapala
Department of Telecommunications Engineering
RSISE, The Australian National University
Canberra ACT 0200, Australia
{jaunty.ho, rodney.kennedy, Thushara.Abhayapala}@anu.edu.au
Abstract A new expression is given for the average
signal-to-noise ratio (SNR) of a dual selection-combining
receiver where the antenna signals are correlated in a
Rayleigh fading multipath environment. This formula is
based on a recently developed expression for the bivari-
ate Rayleigh cumulative distribution function by associ-
ating the correlation parameter of the distribution with
the spatial correlation of the multipath field. By exam-
ining various multipath and receiver antenna geometries
we can determine the critical parameters which affect the
average SNR performance. Our results are shown to gen-
eralize and subsume well-known expressions based on an
independence assumption of the signals at the antennas.
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