Light Fidelity (Li-Fi): A Wireless Technology

Wireless communication is the need of the hour, there is a huge demand for improvement in the means of communication. The brewing crisis of the radio frequency (RF) spectrum demands the need for a system like light fidelity (Li-Fi) which relies on the aspect of visible light communications (VLC). Li-Fi technology offers a variety of effective solutions to problems faced in recent years. This technology utilizes data transmission by light, and the unique properties of the white light emitting diode (LED) lamp switching comes into play. In the proposed system we transmit an audio signal generated by a mobile phone. The signal is modulated and then transmitted by LEDs in form of a light signal which is read by the solar panel and the received signal is transformed into an electrical signal. The signal is demodulated and read by the speakers. Li-Fi is a fast, upcoming, and growing technology, it's a better alternative to Wi-Fi in wireless communication. In the present paper, the authors have focused on the pros of Li-Fi, its applications, and its fundamental working. Li-Fi is greener, safer, and more economically feasible in the future of communication.