Impact and feasibility of darklight LED on indoor visible light positioning system

An unidirectional Visible Light Communication (VLC) can be used for an Indoor Positioning System (IPS). Mean-while, with our knowledge, most of VLC IPS are based on LED lights on, which cause energy waste when indoor lighting system is not necessary in the daytime. In this paper, we propose an IPS that uses DarkLight Visible Light Communication technique (DL-VLC). This proposal can guarantee the IPS function even when LED to be “OFF” and makes more economic energy. With our simulation results, the average of positioning error is 5 cm by considering the shot noise and thermal noise and the LED power of DarkVLC is 1.4 mW which is lower than that of LED in normal mode (19.8 W).