Abstract
As the interest toward communication-based vehicle safety applications is increasing, the development of secure wireless communication techniques has become an important research area. In this context, the article addresses issues that are related to the use of the visible light communication (VLC) technology in vehicular applications. Thus, it provides an extensive presentation concerning the main challenges and issues that are associated to vehicular VLC applications and of some of the existing VLC solutions. Moreover, the article presents the aspects related to the design and intensive experimental evaluation of a new automotive VLC system. The experimental evaluation performed in indoor and outdoor conditions shows that the proposed system can achieve communication distances up to 50 m and bit error ratio (BER) lower than 10−6, while being exposed to optical and weather perturbations. This article provides important evidence concerning the snowfall effect on middle to long range outdoor VLC, as the proposed VLC system was also evaluated in snowfall conditions. Accordingly, the experimental evaluation showed that snowfall and heavy gust could increase bit error rate by up to 10,000 times. Even so, this article provides encouraging evidence that VLC systems will soon be able to reliably support V2X communications.
Highlights
In the context in which the demand for wireless communication technologies is exponentially increasing in almost every domain [1,2,3], the 300 GHz radio-frequency (RF) and Microwave bandwidth becomes insufficient [4]
This experimental verification investigates the and communication frequencies. This experimental verification investigates the potential benefits potential benefits that are associated with context adaptive architectures
In the context of an increasing concern toward the development of enhanced solutions for traffic safety improvement, this article has addressed the issues that are related to the use of visible light communications (VLC) systems in communication-based vehicle safety applications
Summary
In the context in which the demand for wireless communication technologies is exponentially increasing in almost every domain [1,2,3], the 300 GHz radio-frequency (RF) and Microwave bandwidth becomes insufficient [4]. The usage of optical wireless communications (OWC) technologies [5]. Among OWC technologies, visible light communications (VLC) are of special interest from various points of view, providing the simultaneous usage of the visible light (380–780 nm) for illumination and communication purposes [6,7]. This dual use provides a significant energy efficiency, which is improved by the use of solid state lighting sources providing cost-effective lighting and fast switching performances [8].
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