Li-Fi: Wireless Visible Light Communication

Li-fi is about to initiate wireless visible light communication, also called LIFI (Light Fidelity), or optical fidelity technology. This is a technology to transmit data using light bulbs. A small chip formed by embedding a bulb resembles an AP (Wi - Fi hotspot) device, and the terminal can access the network at any time. LIFI invention aims to challenge the existing Wi-Fi technology, but considering the limit of this technology, recently, positive news of the Information Science and Engineering Department, the success of the world's leading communication LIFI successfully visible light inside Transmission network signal

Light fidelity (Li - Fi) is a wireless communication technology that provides high speed data transmission via visible light. The term Li-Fi was created by Professor Harald Haas, CSO of PureLiFi, and refers to visible light communication (VLC) technology that provides high-speed interactive network mobile communication as well as Wi-Fi. VLC uses the visible part of the electromagnetic spectrum to transmit information. This is different from established forms of wireless communication such as Wi - Fi using radio frequency (RF) signals to transmit data.

Li-fi is about to initiate wireless visible light communication, also called LIFI (Light Fidelity), or optical fidelity technology. This is a technology to transmit data using light bulbs. A small chip formed by embedding a bulb resembles an AP (Wi - Fi hotspot) device, and the terminal can access the network at any time. LIFI invention aims to challenge the existing Wi-Fi technology, but considering the limit of this technology, recently, positive news of the Information Science and Engineering Department, the success of the world's leading communication LIFI successfully visible light inside Transmission network signal

Li-Fi (Light Fidelity) is bi-directional high-speed full network wireless communication technology similar to Wi-Fi. Li-Fi, created by Professor Harald Has, is a subset of optical wireless communications (OWC) complementing RF communication (Wi-Fi or cellular network) or alternatives to data broadcasting environments. So far it has been measured at about 100 times the speed of Wi - Fi, reaching a speed of 224 gigabits per second. Visible light communication (VLC) functions by turning the LED current off at very high speed. It is too fast to recognize with human eyes. The Li - Fi LED needs to be saved to transmit data, but it can dim the light below the human sight, while emitting enough light to transmit the data. The light wave can not pass through the wall, so the range is narrower than Wi - Fi, but the safety is low.