IJRE – Volume 3 Issue 4 Paper 1


Author’s Name :  S.Karthikeyan | S.Mathan prabhu | S.Mugesh  | R.Sharmila Gowri

Volume 03 Issue 04  Year 2016  ISSN No:  2349-252X  Page no: 1-4






Visible Light Communication (VLC) system based on white LEDs has emerged as an eco-friendly IT green technology using THz visible light spectrum in provision of both lighting and wireless access Nowadays people mostly use wireless network to accomplish their data sharing process. we are introducing concept of Li-Fi. Li-Fi stands for Light-Fidelity. Li- Fi technology, proposed by the German physicist— Harald Haas, provides transmission of data through illumination by sending data through an LED light bulb that varies in intensity faster than the human eye can follow. We focus on developing a Li-Fi based system and analyzes its performance with respect to existing technology Li-Fi provides better bandwidth, efficiency, availability and security than Wi-Fi and has already achieved blisteringly high speed in the lab. By leveraging the low-cost nature of LEDs and lighting units there are many opportunities to exploit this medium, we here present the future technology, where data for laptops, smart phones, and tablets will be transmitted through the light in a room. while providing efficient and low-cost lighting. To achieve the higher data rates (MHz), PLC channel is simulated using DMT-QAM modulation scheme.


Li-Fi, Wi-Fi, high-brightness LED, photodiode, wireless communication.


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