Atmospheric and Ocean Optics

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

[+] Author Affiliations
Dirk Giggenbach, Hennes Henniger

German Aerospace Center (DLR), Institute of Communication and Navigation, Muenchnerstrasse 20, 82230 Wessling, Germany

Opt. Eng. 47(4), 046001 (April 25, 2008). doi:10.1117/1.2903095
History: Received September 28, 2007; Revised November 16, 2007; Accepted December 04, 2007; Published April 25, 2008; June 12, 2008
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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.

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© 2008 Society of Photo-Optical Instrumentation Engineers

Citation

Dirk Giggenbach and Hennes Henniger
"Fading-loss assessment in atmospheric free-space optical communication links with on-off keying", Opt. Eng. 47(4), 046001 (April 25, 2008). ; http://dx.doi.org/10.1117/1.2903095


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