Statistical Modelling of Atmospheric Turbulence in Free-Space Optical Communication Systems

Keywords:
FSO, atmospheric turbulence, Gamma-Gamma distribution, Rician Distribution, Nakagami-m distribution

Abstract:
The paper focuses on the statistical modeling of atmospheric turbulence, a crucial aspect in predicting signal performance. Three distributions—Gamma-Gamma, Rician, and Nakagami-m play a significant role in understanding and forecasting the influence of atmospheric conditions on Free-Space Optical (FSO) communication systems. The Gamma-Gamma distribution provides insights into scintillation effects, the Rician distribution addresses scenarios with a dominant line-of-sight component, while the Nakagami-m distribution is employed to model situations with multiple scatters. In the part of the paper exploring the Gamma-Gamma distribution, various forms of the distribution are graphically represented depending on the strength of turbulence. The spreading of the distribution, serving as an indicator of signal degradation, is straightforwardly depicted based on the turbulence strength. In the case of the Rician distribution, a derived expression for the Probability Density Function (PDF) is provided relative to the K factor. Additionally, the distribution's relationship is visually represented as the K factor increases, illustrating the relationship between the dominant component and the scattering-induced component. In the section dedicated to the Nakagami-m model, an analysis of the properties of this distribution is conducted depending on the fading parameter (m). By examining the characteristics of the distributions presented in this study, the selection process for modeling systems is facilitated. Despite the drawbacks associated with FSO, the statistical modeling of turbulence provides valuable insights for optimizing system performance in real-world scenarios

CITATION:

IEEE format

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N. Stanojević, �. Banđur, �. Šarčević, P. Spalević, S. Panić, “Statistical Modelling of Atmospheric Turbulence in Free-Space Optical Communication Systems,” in Sinteza 2024 - International Scientific Conference on Information Technology, Computer Science, and Data Science, Belgrade, Singidunum University, Serbia, 2024, pp. 184-190. doi:10.15308/Sinteza-2024-184-190

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Stanojević, N., Banđur, �., Šarčević, �., Spalević, P., Panić, S. (2024). Statistical Modelling of Atmospheric Turbulence in Free-Space Optical Communication Systems. Paper presented at Sinteza 2024 - International Scientific Conference on Information Technology, Computer Science, and Data Science. doi:10.15308/Sinteza-2024-184-190

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