Abstract
This paper introduces infrastructure-to-vehicle (I2V) communication based on asynchronous optical camera communication (OCC), the transmitter of which can be an LED traffic light or electronic display, with the receiver being the existing front vehicle camera. In asynchronous OCC-based I2V communication, the key technique is an asynchronous scheme. An asynchronous scheme not only takes advantage of simplicity owing to the lack of an uplink or synchronization requirement, but is also the most feasible solution for communication to/from moving vehicles where synchronization is difficult to achieve within a short time. An asynchronous scheme for OCC-based I2V communication is proposed, and a performance evaluation shows its feasibility for use in a number of promising OCC-based wireless communication applications and services in a vehicular environment.
Highlights
In an intelligent traffic system, for safety reasons including cooperative driving and collision avoidance, along with the importance of in-traffic navigation, infrastructure-to-vehicle (I2V) communication is becoming more and more essential
An Optical camera communication (OCC)-based I2V system can be deployed in an existing infrastructure such as LEDs traffic or electronic lighting signal sign acting as a transmitter and the front vehicle camera acting as a receiver
Scheme 1 is simple in its implementation but leads to some errors owing to the effect of the variation in frame rate of the camera
Summary
In an intelligent traffic system, for safety reasons including cooperative driving and collision avoidance, along with the importance of in-traffic navigation, infrastructure-to-vehicle (I2V) communication is becoming more and more essential. Optical camera communication (OCC) might be another option for wireless communication in a vehicular environment. An OCC-based I2V system can be deployed in an existing infrastructure such as LEDs traffic or electronic lighting signal sign acting as a transmitter and the front vehicle camera acting as a receiver. Compared to RF, OCC may be a better I2V solution because visible light and cameras are available, whereas RF has to be generated after a deep consideration of the unmitigated challenges. The advantages of OCC can be summarized as follows: (1) using existing infrastructure conditions without considerable modification (traffic lights or electric traffic signs as the transmitter and an in-vehicle camera as the receiver). OCC and RF are not competitive but work cooperatively to fulfill wireless vehicular communication
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