27 January 2004 Analysis of fading for a free-space optical communication link subject to atmospheric scintillation
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Abstract
Atmospheric scintillation causes fading to a free-space optical communications link. Optical communication links can be improved by the correct application of coding schemes customized to meet the atmospheric conditions. For this paper, we model atmospheric scintillation using a gamma-gamma probability distribution. From the scintillation model, the equations are derived for probability of fade along with mean fade time and the duration of fade. Parameters for the gamma-gamma model, directly related to atmospheric conditions, are used to compute theoretical cases of fading in weak and strong atmospheric turbulence. With the models for atmospheric fading, different coding techniques on a pulse-position modulation optical link are examined.
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John J. Kiriazes, Ronald L. Phillips, Larry C. Andrews, "Analysis of fading for a free-space optical communication link subject to atmospheric scintillation", Proc. SPIE 5160, Free-Space Laser Communication and Active Laser Illumination III, (27 January 2004); doi: 10.1117/12.507713; https://doi.org/10.1117/12.507713
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