Multihop Free-Space Optical Communications Over Strong Turbulence Channels


In this paper, we study the performance of multihop free-space optical (FSO) wireless systems over turbulenceinduced fading channels. The analysis is carried out for systems employing amplify-and-forward (AF) or decode-and-forward (DF) relays and for turbulence channels which can be modeled by the Gamma-Gamma distribution. An exact analytical expression for the end-to-end outage probability of AF systems is obtained, while a closed-form expression of DF systems is derived. The average bit-error probability of a dual-hop FSO system employing a DF relay is studied as a special case. Numerical examples are also presented to illustrate the proposed analysis and to further investigate the effects of the turbulence severity on the multihop FSO systems’ performance.

DOI: 10.1109/ICC.2006.255196

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@inproceedings{Tsiftsis2006MultihopFO, title={Multihop Free-Space Optical Communications Over Strong Turbulence Channels}, author={Theodoros A. Tsiftsis and Harilaos G. Sandalidis and George K. Karagiannidis and Nikos C. Sagias}, booktitle={ICC}, year={2006} }