Vehicular VLC Channel Model for a Low-Beam Headlight Transmitter

The availability of LED-based headlights and taillights allows visible light communication (VLC) to be considered as a powerful wireless access technology for vehicle-to-vehicle (V2V) communications. A crucial system design concern is modeling a realistic vehicular VLC channel which is verified through measurements. In this paper, we experimentally measure the optical channel for V2V considering a low beam headlight and propose a closed-form path loss expression through data fitting. We further calculate the achievable system capacity that can be supported with such a VLC transmitter.