Performance analysis of mixed Weibull and Gamma-Gamma dual-hop RF/FSO transmission systems

TitrePerformance analysis of mixed Weibull and Gamma-Gamma dual-hop RF/FSO transmission systems
Publication TypeConference Paper
Year of Publication2017
AuthorsHajji, M, F. Bouanani, E
Conference NameProceedings - 2017 International Conference on Wireless Networks and Mobile Communications, WINCOM 2017

In this paper, we study the performance of a dualhop amplify-and-forward (AF) communication system over asymmetric links composed of Radio-Frequency (RF) and Free-Space- Optical (FSO) links in the presence of atmospheric turbulence as well as pointing error impairments under both heterodyne detection and intensity modulation with direct detection (IM/DD) techniques. The RF link is assumed to operate under Weibull fading, while the FSO channel undergoes Gamma-Gamma (GG) fading. Using a Channel-State-Information (CSI)-assisted relaying, we derive closed-form expressions for the cumulative distribution function (CDF) and the probability density function (PDF) of the end-to-end signal-to-noise ratio (SNR) for the considered system in terms of the Meijer G-function. Based on these results, a novel closed-form expression of the average symbol error rate (ASER) in terms of the bivariate Fox Hfunction is derived. Finally, numerical results are presented to validate the analytical expressions. © 2017 IEEE.




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