Line-of-sight and non-line-of-sight vehicle-to-vehicle communication using light fidelity

Abstract

Subject of study. Light fidelity is an alluring complementary communication technology for vehicular applications such as vehicle-to-vehicle and navigation systems. The street light communication system can be utilized for sending data like location, sign boards, traffic ahead, emergencies, speed limit, etc. This can help in easy navigation and reduce traffic congestion. Method. In this paper, a hardware model for vehicle-to-vehicle bidirectional communication along with street-light-to-vehicle communication has been presented. A taillight red color light emitting diode with a headlight white color light emitting diode was employed in the experiment to analyze the range in different situations. Main results. This paper also consists of the simulation of a non-line-of-sight communication channel considering different atmospheric conditions. This is effective in cases where line-of-sight communication is not possible. It has been observed that the Q-factors of the signals were 29.53 and 25.80 in the cases of climatic conditions such as clear and heavy fog, respectively. Practical significance. The transmission distance can be increased using brighter lights like used in real life headlights of cars and better photodiodes with higher photosensitivity and fast response time. The proposed prototype is useful in the case of traffic jams and other traffic scenarios.