4 May 2010 Effects of beam wander on free-space optical communications through turbulent atmosphere
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Abstract
Effects of beam wander on uncoded bit-error-rate (BER) of direct-detection OOK modulated FSO communication systems using collimated and focused Gaussian beams are studied. Channel fading statistics are obtained from large-scale wave optics simulations and compared with the closed-form log-normal and gamma-gamma models. The avalanche photodiode (APD) is chosen for photodetection. The accurate McIntyre-Conradi APD model is adopted for performance evaluation. Results show that large performance gain (more than 15dB) can be achieved with fast-tracked focused beams. The upper bound of higher-order adaptive optics gain beyond tracking gain is also studied.
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Zhijun Zhao, Zhijun Zhao, Rui Liao, Rui Liao, } "Effects of beam wander on free-space optical communications through turbulent atmosphere", Proc. SPIE 7685, Atmospheric Propagation VII, 76850K (4 May 2010); doi: 10.1117/12.852479; https://doi.org/10.1117/12.852479
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