4.7 Article

Atmospheric turbulence and numerical evaluation of bit error rate (BER) in free-space communication

期刊

OPTICS AND LASER TECHNOLOGY
卷 42, 期 1, 页码 55-60

出版社

ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2009.04.017

关键词

Atmospheric turbulent; Bit error rate; Free space optical (FSO) communication

资金

  1. Hi-Tech Industries Center-Iran Ministry of Industry [84-6-495]

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Bit error rate (BER) is an important parameter in free-space optical (FSO) communication. This paper presents the numerical evaluation of BER by studying the propagation of an initial Gaussian laser beam through turbulent atmosphere. Beam scintillation, spreading and wandering were considered as the atmospheric turbulent effects on the laser beam degradation. Different turbulent conditions and laser beam characteristics were applied to the calculations. The results show that the BER can be influenced considerably by atmospheric turbulence. According to these results the laser beam size and wavelength have also significant effects in the BER values. (C) 2009 Elsevier Ltd. All rights reserved.

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