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A New Closed Form Approximation for BER for Optical Wireless Systems in Weak Atmospheric Turbulence

  • Rahul Kaushik EMAIL logo , Vineet Khandelwal and R. C. Jain
Published/Copyright: April 6, 2018
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Abstract

Weak atmospheric turbulence condition in an optical wireless communication (OWC) is captured by log-normal distribution. The analytical evaluation of average bit error rate (BER) of an OWC system under weak turbulence is intractable as it involves the statistical averaging of Gaussian Q-function over log-normal distribution. In this paper, a simple closed form approximation for BER of OWC system under weak turbulence is given. Computation of BER for various modulation schemes is carried out using proposed expression. The results obtained using proposed expression compare favorably with those obtained using Gauss-Hermite quadrature approximation and Monte Carlo Simulations.

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Received: 2016-10-19
Accepted: 2016-11-10
Published Online: 2018-4-6
Published in Print: 2018-4-25

© 2018 Walter de Gruyter GmbH, Berlin/Boston

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