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dc.contributor.authorRidha Shakir, Wafaa Mohammeden_US
dc.contributor.authorCharafeddine, Jinanen_US
dc.contributor.authorSatai, Haitham Alen_US
dc.contributor.authorHamdan, Hanien_US
dc.contributor.authorHaddad, Samir Elen_US
dc.contributor.authorSayah, Jinaneen_US
dc.description.abstractThe security and reliability of free space optical (FSO) communications and the trade-off between the two are the most critical characteristics to emphasize in FSO systems, especially as optical wireless communications continue to evolve. In this work, we investigate the impact of opportunistic transmit aperture selection (TAS) on the security-reliability trade-off (SRT) of the multiuser multiple-input multiple-output (MU-MIMO) free space optical system. We consider a general scenario in which the FSO system consists of a transmitter side with K users and a single receiver with N apertures communicating over generalized Malaga-M turbulence channels. We derive the TAS combined signal-to-noise ratio (SNR) distributions for the FSO MIMO channel between the transmitting users and the receiver. A statistical analysis of the TAS scheme is performed, where the k th best user with the highest SNR is selected. Based on this analysis, the closed-form expressions for the outage probability, average bit error rate, intercept probability, and SRT are derived. Then, the diversity advantages provided by the channel variations considering the atmospheric turbulence and generalized nonzero boresight pointing errors are further discussed. The results show that the considered TAS significantly improves the security, reliability, and SRT performance and has the potential to solve existing FSO communication problems. Monte Carlo simulations are used to verify the correctness of the numerical results.en_US
dc.subjectLaser beamsen_US
dc.subjectAdaptive opticsen_US
dc.subjectOptical receiversen_US
dc.subjectAtmospheric modelingen_US
dc.titleOpportunistic Schedule Selection for Multiuser MIMO FSO Communications: A Security-Reliability Trade-off Perspectiveen_US
dc.typeJournal Articleen_US
dc.contributor.affiliationDepartment of Computer Scienceen_US
dc.contributor.affiliationDepartment of Telecommunications and Networking Engineeringen_US
dc.description.statusIn Pressen_US
dc.relation.ispartoftextIEEE Photonics Journalen_US of Arts and Sciences- Fares Faculty of Technology-
Appears in Collections:Department of Telecommunications and Networking Engineering
Department of Computer Science
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