Transmitter and Receiver Design for Visible Light Communication System with Off-the-Shelf LED Towards its Implementation Possibility for Vehicle to Vehicle/Infrastructure (V2V/V2I) Communication

Spectrum crunch is one of the challenges that arises as a result of the growth of radio communication technology due to its limited spectrum availability. Visible light communication (VLC), utilizing a light-emitting diode (LED) to transmit data and a photodiode to receive it, emerges as one of the solution options for transmitting and receiving data wirelessly due to its speed and much broader spectrum. In this paper, we present a design of a metal-oxide-semiconductor field-effect transistor (MOSFET) as source follower and a non-inverting summing amplifier-based transmitter of a VLC system utilizing off-the-shelf available indoor LED, then experimentally demonstrate the system performance by applying Manchester code to improve DC balance so as the midpoint signal will always have a certain fixed value. Furthermore, the impact of the link distance between the transmitter and the receiver on the performance is investigated by sending 1 Mbps of signal data speed and varying the distance from 50cm to 200cm with an interval of 50cm. The results show that the received encoded signal achieves the DC-balanced data even in a dynamic position and is successfully transmitted at the furthest distance of 200cm. These preliminary results open up the possibility of its application in Vehicle to Vehicle or Vehicle to Infrastructure Communication (V2V and V2I).