Communication Performance Depending on LED Installation Position in Image Sensor Communication Using Propeller LED Transmitter

This study focuses on image sensor communication, visible light communication in which a light-emitting diode (LED) is used as a transmitter and an image sensor (camera) is used as a receiver. The camera on the receiving side can separate the light from the LED and the ambient light, but the communication speed depends on the camera’s shooting speed. To overcome this problem, we developed a propeller LED transmitter that improves the communication speed by rotating the LED at high speed in a propeller shape. However, the amount of movement per rotation varies depending on the position of the LEDs, which affects interference between adjacent LEDs. This paper investigates the performance of image sensor communication using a propeller LED transmitter by focusing on arbitrary LED locations. Specifically, we calculate the amount of rotational movement of the LED that causes demodulation errors and confirm the validity of the calculated results from communication simulations.