Abstract: Li-Fi is abbreviated as Light Fidelity refers to 5G Visible Light Communication systems using light-emitting diodes as a medium to high-speed communication in a parallel behavior as Wi-Fi. In the days where internet has become a major insist, people are in a search for Wi-Fi hotspots. Li-Fi or New Life of data communication is a improved a new Wi-Fi in wireless communication. This paper proposes a study on Li-Fi Technology. The Li-fi technology was made-up by Professor Harald Hass of University of Edinburgh. Li-Fi has more facility in terms of bandwidth invisible region therefore it does not poke its nose in other communications which uses radio occurrence range, without taking its frequency bands. Li-Fi has thousand times greater speed than Wi-Fi and provides security as the visible light is unable to enter through the walls, which offer a new era of wireless communication. The concept of Li-Fi is data communication on fast sparkling of light which is not detected by human eye but it is focused on photo detector which converts the on-off state into binary digital data. It has gained a huge status in two years of its innovation. Such technology has brought not only greener but safer and cheaper future of communication.
Keywords: LED (Light Emitting Diode),Wi-Fi (Wireless Fidelity),Li-Fi (Light Fidelity),VLC (Visible Light Communication),RF (Radio Frequency).