Zhalehpour, SasanUysal, Murat2016-02-162016-02-162014978-1-4799-5601-22162-7339http://hdl.handle.net/10679/2471https://doi.org/10.1109/ICTON.2014.6876611Due to copyright restrictions, the access to the full text of this article is only available via subscription.In this paper, we investigate the performance of free space optical (FSO) systems with parallel multihop relaying and path selection. Specifically, we consider an FSO communication system which employs M parallel relaying paths each of which consists of N decode-and-forward relays. We assume the deployment of the so-called mth best path selection (m-BPS) protocol. In this protocol, data is transmitted through the mth (m≥2) best path towards the destination since the best path (i.e., m = 1) might not be available due to scheduling or load balancing issues. Under the assumption of log-normal turbulence channels, we derive a closed form outage probability expression for the FSO communication system with m-BPS protocol and further confirm the accuracy of derived expression through Monte Carlo simulations.engrestrictedAccessconferenceObject1400034651640034710.1109/ICTON.2014.6876611FSO communicationsOutage probabilityRelay selectionTurbulence fading channels2-s2.0-84906739802