Measurement-based VLC channel characterization for I2V communications in a real urban scenario
Authors: Caputo S., Mucchi L., Cataliotti F., Seminara M., Nawaz T., Catani J.
Autors Affiliation: Dept. of Information Engineering (DINFO), University of Florence, Italy; European Laboratory for Non linear Spectroscopy (LENS), University of Florence, Italy; Dept. of Physics and Astronomy, University of Florence, Italy; National Institute of Optics-CNR (CNR-INO), Sesto Fiorentino, Italy
Abstract: Visible light communication (VLC) is nowadays envisaged as a promising technology to enable new classes of services in intelligent transportation systems ranging, e.g., from assisted driving to autonomous vehicles. The assessment of the performance of VLC for automotive applications requires as a basic step a model of the transmission pattern and propagation of the VLC signal when real traffic-lights and road scenarios are involved. In this paper an experimental measurement campaign has been carried out by using a regular traffic-light as source (red light) and a photoreceiver positioned, statically, at different distances and heights along the road. A linear regression technique is used to come up with different propagation models. The proposed models have been compared, in terms of accuracy and complexity, to the conventional Lambertian model to describe the VLC channel in a real urban scenario. The proposed models provides a significant higher accuracy with comparable complexity.
Journal/Review: VEHICULAR COMMUNICATIONS
Volume: 28 Pages from: 100305-1 to: 100305-12
KeyWords: Visible light communications; Experimental measurements; Channel modeling; Vehicular communicationsDOI: 10.1016/j.vehcom.2020.100305