Abstract
Visible light communication (VLC) is based on the idea of modulating the light intensity of LEDs to transmit information and enables the dual use of exterior automotive and road side infrastructure lighting for both illumination and communication purposes. To position VLC as a strong candidate for vehicular connectivity, it is essential to realize multi-directional reception in various deployment scenarios supporting both vehicle-to-vehicle (V2V) and infrastructure-to-vehicle (I2V) links. In this paper, we investigate the performance of a vehicular VLC system in different road types (i.e., multi-lane, curved roads), intersections (i.e., T-shaped, Y-shaped intersections) and traffic scenarios (i.e., cruising in the same or different lanes, lane change etc.). We conduct a channel modeling study based on non-sequential ray tracing to quantify the capability of receiving signals in different cases. Our results reveal that deployment of nine photodetectors with carefully determined locations on the vehicle is enough to create the required quasi-omni-directional coverage for both V2V connectivity (in front and back directions) and I2V connectivity.
Highlights
Vehicular communication is one of the key enabling technologies for future intelligent transportation systems (ITSs) [1], [2]
While vehicle-to-vehicle (V2V) links are important for safety functionalities such as pre-crash sensing and forward collision warning, infrastructure-to-vehicle (I2V) links provide the connected vehicles with a variety of useful information
VOLUME 9, 2021 in various deployment scenarios supporting both V2V and I2V links. It remains an open question what is the sufficient number of required PDs to achieve this. To address this question of practical relevance, we investigate the performance of a vehicular visible light communication (VLC) system in different road types, intersections (i.e., T-shaped and Yshaped intersections) and traffic scenarios
Summary
Vehicular communication is one of the key enabling technologies for future intelligent transportation systems (ITSs) [1], [2]. In [40], four PDs are utilized; the PD located at the top of the vehicle is used for the reception from the infrastructure while three PDs, located at the back of the vehicle, are used to receive the signals from the HLs of the following vehicle These works, are limited to simple scenarios where two vehicles follow each other in single-lane or two-lane straight roads. It remains an open question what is the sufficient number of required PDs to achieve this To address this question of practical relevance, we investigate the performance of a vehicular VLC system in different road types (i.e., multilane and curved roads), intersections (i.e., T-shaped and Yshaped intersections) and traffic scenarios (i.e., cruising in the same or different lanes, lane change etc.).
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