LI-FI (Light Fidility) Future of Wireless Communication

Abstract

Li-Fi is a bidirectional, high speed and fully networked wireless communication technology similar to Wi-Fi. Coined by Prof. Haral Haas, Li-Fi is a subset of optical wireless communications (OWC) and can be a complement to RF communication (Wi-Fi or Cellular network), or a replacement in contexts of data broadcasting. Li-Fi technology 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. This paper focuses 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. He envisions a future where data for laptops, smart phones, and tablets is transmitted through the light in a room. And security would be snap – if you can’t see the light, you can’t access the data.[1] “Li–Fi technology” which he calls “Data through illumination” or “D-Light”. Li-Fi is a new approach of VLC which has much more similar working of a OFC communication system providing data rates of ten’s of Gbps. In this technology data is interpreted by the LED’s ON/OFF concepts.[2]