On the capacity of FSO links under lognormal and Rician-lognormal turbulences

Imran Shafique Ansari, Mohamed-Slim Alouini, Julian Cheng

Research output: Chapter in Book/Report/Conference proceedingConference contribution

21 Scopus citations


A unified capacity analysis under weak and composite turbulences of a free-space optical (FSO) link that accounts for pointing errors and both types of detection techniques (i.e. intensity modulation/direct detection as well as heterodyne detection) is addressed in this work. More specifically, a unified exact closed-form expression for the moments of the end-to-end signal-to-noise ratio (SNR) of a single link FSO transmission system is presented in terms of well-known elementary functions. Capitalizing on these new moments expressions, unified approximate and simple closed- form results are offered for the ergodic capacity at high SNR regime as well as at low SNR regime. All the presented results are verified via computer- based Monte-Carlo simulations.
Original languageEnglish (US)
Title of host publication2014 IEEE 80th Vehicular Technology Conference (VTC2014-Fall)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
ISBN (Print)9781479944491; 9781479944491
StatePublished - Sep 2014


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