On the performance of free-space optical communication systems over double generalized Gamma channel

AlQuwaiee, H., Ansari, I. S. and Alouini, M.-S. (2015) On the performance of free-space optical communication systems over double generalized Gamma channel. IEEE Journal on Selected Areas in Communications, 33(9), pp. 1829-1840. (doi: 10.1109/JSAC.2015.2432529)

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Starting with the double generalized Gamma (GG) model to describe turbulence-induced fading in free-space optical (FSO) systems, we propose a new unified model that accounts for the impact of pointing errors and type of receiver detector. More specifically, we present unified closed-form expressions for the cumulative distribution function, the probability density function, the moment generating function, and the moments of the end-to-end signal-to-noise ratio (SNR) of a single link FSO transmission system in terms of the Meijer's G-function. We then use these unified expressions to evaluate performance measures such as the bit error rate, the outage probability, and the ergodic capacity of: 1) a single FSO link operating over double GG fading model; and 2) asymmetric RF-FSO dual-hop relay transmission system with fixed gain relay. Using an asymptotic expansion of the Meijer's G-function at high SNR, we express all the expressions, derived earlier, in terms of elementary functions. All our analytical results are verified using computer based-Monte Carlo simulations.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Ansari, Dr Imran
Authors: AlQuwaiee, H., Ansari, I. S., and Alouini, M.-S.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:IEEE Journal on Selected Areas in Communications
Publisher:Institute of Electrical and Electronics Engineers
ISSN (Online):1558-0008
Published Online:13 May 2015

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