Li-Fi: A New Paradigm in Wireless Communication
Li-Fi: A New Paradigm in Wireless Communication. lighting reaches nearly everywhere, so communications can ride along for nearly free. Think of a TV remote in every leD light bulb and you’ll soon realise the possibilities of communications using visible light—also dubbed as li-Fi Most of us are familiar with Wi-Fi (Wireless Fidelity), which uses 2.4-5GHz RF to deliver wireless Internet access around our homes, schools, offices and in public places. We have become quite dependent upon this nearly ubiquitous service. But like most technologies, it has its limitations. While Wi-Fi can cover an entire house, its bandwidth is typically limited to 50-100 megabits per second (Mbps) today using the IEEE802.11n standard. This is a good match to the speed of most current Internet services, but insufficient for moving large data files like HDTV movies, music libraries and video games. The more we become dependent upon ‘the cloud’ or our own ‘media servers’ to store all ...