Outage Probability Analysis of Cooperative Diversity Networks Over Weibull and Weibull-Lognormal Channels

Authors:
Abdelrahman H. Gaber;Mahmoud H. Ismail;Hebat-Allah M. Mourad
Affiliations:
Department of Electronics and Communications Engineering, Faculty of Engineering, Cairo University, Giza, Egypt 12613;Department of Electronics and Communications Engineering, Faculty of Engineering, Cairo University, Giza, Egypt 12613;Department of Electronics and Communications Engineering, Faculty of Engineering, Cairo University, Giza, Egypt 12613
Venue:
Wireless Personal Communications: An International Journal
Year:
2013

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Abstract

This paper presents the analysis of outage probability for a cooperative diversity wireless network using amplify-and-forward relays over independent non-identical distributed Weibull and Weibull-lognormal fading channels for single as well as multiple relays. To reach that end, a closed-from expression for the moment-generating function of the total signal-to-noise-ratio (SNR) at the destination is derived in terms of the tabulated Meijer's G-function. Since it is hard to determine the exact probability distribution function of the SNR, a tight lower bound approximation is proposed. Simulation results are presented that show that the outage probability lower bound tends to be tight at high SNR values thus verifying the analytical results. The results also show the potential gain of relaying on the outage probability.