Visible Light Communication For V2V Positioning

The study of vehicle-to-vehicle (V2V) positioning is crucial to the safety of autonomous cars. Global positioning system (GPS) has gained popularity as an option because it is inexpensive and simple to use.

Researchers have suggested a reliable vehicle-to-vehicle (V2V) positioning technique based on visible light transmission that uses a monocular camera. (VLC). The baseline, which is never set, is one of the main effects of the accuracy of monocular positioning. The fixed baseline for monocular positioning is the known length of the taillights, which increases positioning precision.

However, GPS precision needs to be improved due to the multipath effect and building signal blockage. In addition to GPS, RADAR, and LIDAR can also reach quite a high accuracy, but they are also expensive. Due to its benefits in low cost, immunity to electromagnetic interference, and low power consumption, visible light communication (VLC) based positioning schemes are increasingly being used as alternatives.

The visible light communication-based positioning technique can provide three functions—illumination, communication, and positioning. The transmitter and receiver make up the VLC system’s framework. The transmitter is made of light-emitting diodes (LEDs), which can send data for communication and positioning. Each car’s recipient is equipped with a camera in the meantime. The estimating vehicle also has a CPU (central processing unit) to analyze and decode the signal. Thus, the distance between the estimated and target vehicles can be determined using a VLC-based positioning method.

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