A Survey of Wireless Communication with Li-Fi Technology

There is significant increase in traffic on the network and hence its complexity increases . Due to which there is shortage of radio bandwidth. LI-FI or light fidelity is the method which is derived to overcome these problems. The efficiency, durability, and lifetime of light-emitting diodes have led to their use in a variety of applications, including general illumination, vehicle lights, sign age, and displays ,In fact, it is often predicted that LED bulbs will soon replace all traditional incandescent bulbs, as well as compact fluorescent alternatives, in general lighting applications It has long been recognized that LEDs used in such systems can be simultaneously modulated to provide a dual function of communications. Proposed applications for visible light communications include indoor local area networks through room lighting in-flight data downlinks through airplane reading lamps intelligent transportation positioning in wireless sensor networks and underwater. This paper focuses on developing a Li-Fi based system and analyzes its performance with respect to existing technology. Wi-Fi is great for general wireless coverage within buildings, whereas Li-Fi is ideal for high density wireless data coverage in confined area and for relieving radio interference issues. 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, from public internet access through street lamps to auto-piloted cars that communicate through their headlights.

Keywords:

Li-Fi (Light Fidelity) , Wi-Fi (Wireless Fidelity) , VLC (Visible Light Communication) , LED (Light Emitting Diode)