Low-latency VLC system with fresnel receiver for I2V ITS applications

Year: 2020

Authors: Nawaz T., Seminara M., Caputo S., Mucchi L., Catani J.

Autors Affiliation: Univ Florence, Dept Phys & Astron, I-50121 Florence, Italy; Natl Inst Opt CNR CNR INO, I-50125 Florence, Italy; Univ Florence, European Lab NonLinear Spect LENS, I-50121 Florence, Italy; Univ Florence, Dept Informat Engn, I-50121 Florence, Italy.

Abstract: This work presents a characterization of a low-cost, low-latency Visible Light Communication (VLC) prototype for infrastructure-to-vehicle (I2V) communication for future Intelligent Transportation Systems (ITS). The system consists of a regular traffic light as a transmitter (the red light is modulated with the information), and a photodetector as a receiver. The latter is equipped with low-cost Fresnel lenses as condensers, namely, 1 ” Fresnel and 2 ” Fresnel, to increase the optical gain of the system at the receiver. The system is capable of Active Decode and Relay (ADR) of information to further incoming units. The experimental characterization of amplitude and Packet Error Rate (PER) for the proposed system has been performed for distances up to 50 m. The results show that by incorporating the 2 ” Fresnel lens in the photodetector, an error free (PER <= 10-5) I2V communication is established up to 50 m. Furthermore, the prototype can be used for both broadcast and beaconing transmission modes. This low-cost VLC-based system could offer sub-millisecond latency in the full ADR process for distances up to 36 m, which makes it suitable for integration in Cellular-V2X (C-V2X) and 5G platforms. Journal/Review: JOURNAL OF SENSOR AND ACTUATOR NETWORKS

Volume: 9 (3)      Pages from: 35-1  to: 35-10

More Information: This work has been carried out under the financial support of Project PON MIUR 2017 “OK-INSAID”, of Progetto Premiale MIUR FOE 2015 “OpenLab”, and by Project MISE “5G City”-Prato.
KeyWords: infrastructure-to-vehicle; vehicle-to-vehicle; Intelligent Transportation Systems; Visible Light Communication; Fresnel lenses
DOI: 10.3390/jsan9030035

Citations: 17
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