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Proceedings Paper

Statistical properties of the received current in FSO systems
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Paper Abstract

In this work the statistical distribution of the photocurrent generated at the receiver by detecting a Gaussian beam wave after propagating through the turbulent medium was investigated. The results are presented as photocurrent's relative frequencies obtained by means of computer simulation. It was taken into account the cases where random beam misalignment was present. With knowledge of the photocurrent statistical distribution the system bit error rate (BER), which is an important parameter of a digital communication system, was obtained. An experimental set up was mounted in order to collect data for comparisons with the theoretical results. The normalized relative frequencies of both simulated and measured current were plotted in the same graphic. The distributions have shown to be very similar to each other, what leads to the conclusion that the theory provides reliable results.

Paper Details

Date Published: 19 August 2008
PDF: 12 pages
Proc. SPIE 7091, Free-Space Laser Communications VIII, 70910H (19 August 2008); doi: 10.1117/12.794644
Show Author Affiliations
Jose Paulo G. de Oliveira, Univ. of Karlsruhe (Germany)

Published in SPIE Proceedings Vol. 7091:
Free-Space Laser Communications VIII
Arun K. Majumdar; Christopher C. Davis, Editor(s)

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