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Performance Analysis of an Outdoor Visible Light Communications System for Internet-of-Vehicles

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Document pages: 6 pages

Abstract: This paper looks at the performance of an outdoor visible light (OVLC)communication system used for Internet-of-Vehicles (IoV). In the proposedsystem an amplify-and-forward (AF) opportunistic scheme is used to extend therange of information broadcast from a traffic light to vehicles. TheGamma-Gamma channel gain and the Lambertian direct current (DC) channel gainare used to model the fading coefficient of each transmission and the short andthermal noise models used to represent the system noise. The statistics of thesystem are examined by deriving closed-form expressions for the cumulativedistribution function (CDF) and probability density function (PDF) for theequivalent end-to-end signal-to-noise ratio (SNR). Novel closed form equationsare also developed for the outage probability and ergodic capacity. Numericalsimulations performed showed that the system performance in terms of bothoutage probability and ergodic capacity improves with decreasing turbulenceintensity. Results also illustrate that, as the distance between the vehiclesincreases, the system performance is more deteriorated.

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