Kazemi, HosseinMostaani, ZohrehUysal, MuratGhassemlooy, Z.2016-02-162016-02-162013978-1-4673-5821-7http://hdl.handle.net/10679/2474https://doi.org/10.1109/NOC-OCI.2013.6582899Due to copyright restrictions, the access to the full text of this article is only available via subscription.In this paper, we consider a MIMO Free-Space Optical (FSO) communication system over gamma-gamma turbulence channels and derive a closed-form analytical expression for the outage probability taking into account the effects of both the inner scale size of optical channel and the aperture averaging. Our results demonstrate that by increasing the number of transmit and/or receive apertures, the degrading effect of the inner scale size is effectively reduced by extracting the spatial diversity gain of the MIMO scheme. We further provide Monte Carlo simulation results to confirm the validity of the derived expression.enginfo:eu-repo/semantics/restrictedAccessConference paper27528000036029300004110.1109/NOC-OCI.2013.6582899Free-space optical communicationAtmospheric turbulence channelEqual gain combiningGamma-gamma fadingMultiple-input multiple-output transmission2-s2.0-84883828120