DocumentCode :
2902349
Title :
A Simple Statistical Model for Turbulence-Induced Fading in Free-Space Optical Systems
Author :
Chatzidiamantis, Nestor D. ; Sandalidis, Harilaos G. ; Karagiannidis, George K. ; Matthaiou, Michail
Author_Institution :
Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki, Thessaloniki, Greece
fYear :
2010
fDate :
23-27 May 2010
Firstpage :
1
Lastpage :
5
Abstract :
In this paper, we propose the Inverse Gaussian (IG) distribution, as a less complex alternative to Log-normal (LN), to describe turbulence-induced fading in free-space optical (FSO) systems operating in weak turbulence conditions and/or in the presence of a large amount of aperture averaging. By conducting goodness of fit tests, we define the range of values of the scintillation index, where the two distributions approximate each other, with a certain significance level. The efficiency of the new model is pointed out by deriving analytical expressions for the calculation of the bit-error rate of two typical FSO systems; an intensity-modulation/direct detection FSO system with M-ary pulse position modulation and a heterodyne FSO system with differential phase shift keying. Numerical examples are provided to clearly illustrate the accuracy of the proposed approach in the weak turbulence regime.
Keywords :
Gaussian distribution; differential phase shift keying; error statistics; optical communication; optical modulation; pulse position modulation; space communication links; M-ary pulse position modulation; aperture averaging; bit-error rate; differential phase shift keying; direct detection free-space optical system; heterodyne free-space optical system; intensity-modulation free-space optical system; inverse Gaussian distribution; log-normal; scintillation index; statistical model; turbulence-induced fading; Apertures; Bit error rate; Fading; Intensity modulation; Optical mixing; Phase detection; Phase modulation; Pulse modulation; Solid scintillation detectors; Testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications (ICC), 2010 IEEE International Conference on
Conference_Location :
Cape Town
ISSN :
1550-3607
Print_ISBN :
978-1-4244-6402-9
Type :
conf
DOI :
10.1109/ICC.2010.5502065
Filename :
5502065
Link To Document :
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