Performance analysis of free-space optical communication systems over atmospheric turbulence channels

H. E. Nistazakis, T. A. Tsiftsis, G. S. Tombras

Research output: Contribution to journalArticlepeer-review

165 Citations (Scopus)


Turbulence fading is one of the main impairments affecting the operation of free-space optical (FSO) communication systems. The authors study the performance of FSO communication systems, also known as wireless optical communication systems, over log-normal and gamma-gamma atmospheric turbulence-induced fading channels. These fading models describe the atmospheric turbulence because of its very good agreement with experimental measurement data. Closed-form expressions for the average (ergodic) capacity and the outage probability are derived for both statistical models. Another contribution of this work is a study of how the performance metrics are affected by the atmospheric conditions and other parameters such as the length of the link and the receiver's aperture diameter. The derived analytical expressions are verified by various numerical examples and can be used as an alternative to time-consuming Monte-Carlo simulations.

Original languageEnglish
Pages (from-to)1402-1409
Number of pages8
JournalIET Communications
Issue number8
Publication statusPublished - Jul 31 2009

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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