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Optical Engineering

Fading-loss assessment in atmospheric free-space optical communication links with on-off keying
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Paper Abstract

Link-budget calculations are a common way to assess system parameters, such as the required transmitter power and receiver sensitivity, in free-space optical (FSO) communication systems. One of the biggest challenges for long-range FSO deployment is its signal propagation under turbulent atmospheric conditions, which produce intensity fluctuations. Methods to estimate atmospheric-fading loss in radio-frequency systems cannot be adapted to the FSO channel. Until now no general closed-form methods have been developed to describe the fading loss in such a channel. A method to calculate the losses due to scintillation fading in the threshold approach, based on lognormal statistics of the received power, is presented.

Paper Details

Date Published: 1 April 2008
PDF: 6 pages
Opt. Eng. 47(4) 046001 doi: 10.1117/1.2903095
Published in: Optical Engineering Volume 47, Issue 4
Show Author Affiliations
Dirk Giggenbach, DLR Standort Oberpfaffenhofen (Germany)
Hennes Henniger, DLR Standort Oberpfaffenhofen (Germany)

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