Li Fi: The Future Bright Technology in Wireless Communication
In our day to day routine, transferring data from one place to another becomes probably important activities. However, the existing wireless networks are suffering from slow speed when multiple devices connected to the network to the internet. Conventional wireless communication like Wi Fi predominantly user micro/radio wave frequencies for transmitting data because the ability to provide, at low frequencies, broad coverage and, at high frequencies, a line of sight communications. Particularly, the radio waves spectrum has fixed bandwidth because it shapes a small part of the spectrum for transmitting data. Therefore, the increasing demand for wireless data has led to clogging of the radio spectrum. Wi Fi, like other technologies, has some limitations such as security, capacity, efficiency and availability issues. To overcome the shortcomings of Wi Fi, a new technology called Li Fi was developed. Li Fi technology, data through illumination, replaced the radio waves with visible light as the carrier by taking the fibre out of fibre optic and using an LED light bulb for sending data. UK scientists have achieved data transmission speed faster than 250 times than superfast broadband using LED light bulbs. This paper first gives a brief overview of the Li Fi. Then it shows the evidence for moving from using Wi Fi to using Li Fi in the future.