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New Representations for the Gaussian Class Multivariate Weibull Distribution with Constant Correlation and Applications

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2 Author(s)
Kasun T. Hemachandra ; iCORE Wireless Communications Laboratory, University of Alberta, Edmonton, Alberta, Canada ; Norman C. Beaulieu

Novel single-integral representations for the multivariate probability density functions (PDFs) and cumulative distribution functions (CDFs) of the Gaussian class Weibull distribution are derived. The solutions are expressed in terms of familiar mathematical functions which are available in common mathematical software. The well known equal (constant) correlation model is considered. A special linear transformation of independent Gaussian random variables is used to generate correlated Weibull random variables. The advantage of the new representation is that only a single integral computation is needed to compute a N-dimensional distribution. The new representation of the CDF is used for the performance evaluation of a selection diversity combiner operating in equally correlated Weibull fading channels. The new PDF representation is also used for an analysis of the moments of the output signal-to-noise ratio of an equal-gain diversity combiner operating in equally correlated Weibull fading channels.

Published in:

IEEE Transactions on Communications  (Volume:59 ,  Issue: 10 )