Emerging Technology Li-Fi over Wi-Fi

Abstract: Now a day’s Wi-Fi is the most used technology by everyone, but there is an emerging technology Li-Fi, or light fidelity, refers to visible light communication systems using light from light-emitting diodes (LEDs) as a medium to deliver networked, mobile, high-speed communication in a similar manner as Wi-Fi. Li-Fi can be used to off-load data from existing Wi-Fi networks to provide capacity for the greater downlink demand as complementary to the existing wireless or wired network infrastructure. Li-Fi could lead to the Internet of Things, which is everything electronic being connected to the internet, with the LED lights on the electronics being used as internet access points.The Li-Fi market is projected to have a compound annual growth rate of 82 % from 2013 to 2018 and to be worth over $6 billion per year by 2018. Visible light communications (VLC) signals work by switchin