Dual-Hop FSO Transmission Systems over Gamma-Gamma Turbulence with Pointing Errors

Type
Article

Authors
Zedini, Emna
Soury, Hamza
Alouini, Mohamed-Slim

KAUST Department
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program

Online Publication Date
2016-11-18

Print Publication Date
2017-02

Date
2016-11-18

Abstract
In this paper, we analyze the end-to-end performance of dual-hop free-space optical (FSO) fixed gain relaying systems under heterodyne detection and intensity modulation with direct detection techniques in the presence of atmospheric turbulence as well as pointing errors. In particular, we derive the cumulative distribution function (CDF) of the end-to-end signal-to-noise ratio (SNR) in exact closed-form in terms of the bivariate Fox’s H function. Capitalizing on this CDF expression, novel closed-form expressions for the outage probability, the average bit-error rate (BER) for different modulation schemes, and the ergodic capacity of dual-hop FSO transmission systems are presented. Moreover, we present very tight asymptotic results for the outage probability and the average BER at high SNR regime in terms of simple elementary functions and we derive the diversity order of the considered system. By using dual-hop FSO relaying, we demonstrate a better system performance as compared to the single FSO link. Numerical and Monte-Carlo simulation results are provided to verify the accuracy of the newly proposed results, and a perfect agreement is observed.

Citation
Zedini E, Soury H, Alouini M-S (2016) Dual-Hop FSO Transmission Systems over Gamma-Gamma Turbulence with Pointing Errors. IEEE Transactions on Wireless Communications: 1–1. Available: http://dx.doi.org/10.1109/TWC.2016.2630680.

Acknowledgements
This work was supported in part by the Qatar National Research Fund (a member of Qatar Foundation) under NPRP Grant NPRP9-077-2-036. The statements made herein are solely the responsibility of the authors.

Publisher
Institute of Electrical and Electronics Engineers (IEEE)

Journal
IEEE Transactions on Wireless Communications

DOI
10.1109/TWC.2016.2630680

Additional Links
http://ieeexplore.ieee.org/document/7748570/

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