Probability of fade estimation for FSO links with time dispersion and turbulence modeled with the gamma–gamma or the I-K distribution

In this work, we study the influence of the time dispersion and atmospheric turbulence effects on the performance of a free space optical communication system, which is using longitudinal Gaussian pulses as information bit carriers. The scintillation effect, is modeled with the gamma–gamma or the I-...

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Bibliographic Details
Published in:Optik (Stuttgart) 2014-12, Vol.125 (24), p.7191-7197
Main Authors: Varotsos, G.K., Stassinakis, A.N., Nistazakis, H.E., Tsigopoulos, A.D., Peppas, K.P., Aidinis, C.J., Tombras, G.S.
Format: Article
Language:English
Subjects:
Atmospheric turbulence
Dispersions
Exact solutions
Free space optical communication systems
Gamma gamma distribution
Group velocity dispersion
I-K distribution
Links
Mathematical models
Pulse propagation
Scintillation
Turbulent flow
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Summary:In this work, we study the influence of the time dispersion and atmospheric turbulence effects on the performance of a free space optical communication system, which is using longitudinal Gaussian pulses as information bit carriers. The scintillation effect, is modeled with the gamma–gamma or the I-K distribution, which, both, are suitable to emulate irradiance fluctuations due to weak to strong atmospheric turbulence conditions. Additionally, we estimate the influence of the time dispersion effect on chirped pulse's propagation. Taking into account these effects, closed form mathematical expressions for the evaluation of fade's probability of the wireless optical link, are derived. Additionally, the possibility of improving the availability results by choosing the appropriate link and pulse's parameter values is further investigated. Finally the numerical results from the derived mathematical expressions are presented.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2014.08.047