Li-Fi Technological Development

Light-Fidelity (Li-Fi) is a new VLC (Visible light communication is much preferable than existing wireless technologies like Wi-Fi, Wi-Max, Bluetooth etc.) based technology that is proposed in late 2011 by prof. Harald Haas, uses illumination for internet data communication and will be implemented in a near future. The advantage of Li-Fi over present wireless systems is that the electromagnetic spectrum bandwidth used for visible light communication (VLC) of Li-Fi is 10,000 times greater than for electromagnetic spectrum bandwidth of radio frequencies for present wireless systems. As VLC is a relatively new concept in the field of data transmission, a lot of research is being done so that VLC can be used for various commercial purposes. It is found that not a lot research has been on the development of Li-Fi, so the possibilities are wide open. If this concept can be implemented successfully, it will surely bring a revolution in wireless data transmission. This paper presents an overview of VLC and the design of Li-Fi circuit and analysis of its performance over many years of Li-Fi systems.