dc.contributor.author N'Doye, I. dc.contributor.author Cai, W. dc.contributor.author Al-Alwan, Asem Ibrahim Alwan dc.contributor.author Sun, X. dc.contributor.author Headary, W. G. dc.contributor.author Alouini, M. -S. dc.contributor.author Ooi, B. -S. dc.contributor.author Laleg-Kirati, T. -M. dc.date.accessioned 2021-02-17T08:26:58Z dc.date.available 2021-02-17T08:26:58Z dc.date.issued 2021-02-09 dc.identifier.uri http://hdl.handle.net/10754/667490 dc.description.abstract Free-space optical communication is emerging as a low-power, low-cost, and high data rate alternative to radio-frequency communication in short-to medium-range applications. However, it requires a close-to-line-of-sight link between the transmitter and the receiver. This paper proposes a robust $\cHi$ control law for free-space optical (FSO) beam pointing error systems under controlled weak turbulence conditions. The objective is to maintain the transmitter-receiver line, which means the center of the optical beam as close as possible to the center of the receiving aperture within a prescribed disturbance attenuation level. First, we derive an augmented nonlinear discrete-time model for pointing error loss due to misalignment caused by weak atmospheric turbulence. We then investigate the $\cHi$-norm optimization problem that guarantees the closed-loop pointing error is stable and ensures the prescribed weak disturbance attenuation. Furthermore, we evaluate the closed-loop outage probability error and bit error rate (BER) that quantify the free-space optical communication performance in fading channels. Finally, the paper concludes with a numerical simulation of the proposed approach to the FSO link's error performance. dc.publisher arXiv dc.relation.url https://arxiv.org/pdf/2102.04926 dc.rights Archived with thanks to arXiv dc.title Reduction of the Beam Pointing Error for Improved Free-Space Optical Communication Link Performance dc.type Preprint dc.contributor.department Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division dc.contributor.department Electrical Engineering Program dc.contributor.department Physical Science and Engineering (PSE) Division dc.eprint.version Pre-print dc.identifier.arxivid 2102.04926 kaust.person Cai, W. kaust.person Al-Alwan, Asem Ibrahim Alwan kaust.person Sun, X. kaust.person Headary, W. G. kaust.person Alouini, M. -S. kaust.person Ooi, B. -S. kaust.person Laleg-Kirati, T. -M. refterms.dateFOA 2021-02-17T08:27:38Z
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