Light Fidelity: The New Wireless Communication Technology
Abstract
Light Fidelity (Li-Fi) is the latest 5G technology in wireless communication. It is currently becoming more popular as it overcomes the demerits of Wi-Fi and is more energy-efficient. The Wi-Fi radio frequency range is insufficient as the number of users is increasing day by day. To meet this growing demand, the visible light frequency band is used in Li-fi. It makes use of LED (light emitting diode) lights in order to transmit data at a much faster rate than through Wi-Fi. That means, it uses visible light, instead of radio waves, from the electromagnetic spectrum and hence it is termed as visible light communication (VLC). VLC uses rapid pulses of light, which cannot be detected by human eye, to transmit information. This technology was founded by Professor Herald Haas, from the University of Edinburgh in the United Kingdom. It is now a part of the VLC PAN IEEE 802.15.7 standard. With this, a data rate of up to 10 Gbps can be achieved.
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