Abstract
Light is the fastest medium that data can be transferred through. Potential transfer speeds are 1000 times faster than radio waves can achieve. NASA claims to have had success with transferring data from spacecraft to earth and back using lasers. Space-X plan to use lasers for inter communication in their satellite network and MARS missions. This is the revolution of Li-Fi communication technology. After analysis and study of such technologies, it appears that there were certain imitations to the idea of Light fixture to phone camera data transfer. So, I’m introducing Ambient light sensor approach over camera. The goal of this project is to deliver the working actual pathway for the development of a Li-Fi system that could later be adapted to the manufacture of LED lighting systems and integrated to be used with mainstream smartphone hardware. For this project, an Arduino was the easiest way to implement a PC to output connection. A commercial cool white LED was selected for Li-Fi waves due to the centered and even light spectrum it emits. On receiver side, I used ambient light sensor which is also widely available in all smartphones. Previously, this sensor was not used for Li-Fi communication because of very low sampling rate. So, I’m using sampling rate adjustment property to identify each transmitted signal uniquely. In this project, I’m proposing how to modify frequencies that LED transmits, how to calibrate Ambient light sensor sampling rate and how to handle the environmental noises. So that, we can identify and prove a sensor pathway that will allow the clean and rapid sample rates that we are seeking for Li-Fi communication.