One of the world's leading LI-Fi companies installed LI-FI enabled LED lights in 2014 in the Emergency Hospital Center in Perpignan. The hospital was the first in the world to have a Li-Fi spot in the city.
When a patient is admitted in the department and Dr. Jean-Marie Bonnec, head of Perpignan Emergency Department, wants to see the patient's medical records, the patient is connected to a computer over the Internet.
LI-Fi devices installed in hospital areas use radiation devices to block or distort the Internet signal, Campos-Fentane said. The term "LI" is similar to Wi-Fi in its end-use but the major technical difference is that Wi-Fi uses high frequency induced voltages in the antenna to transmit data, while Li-Fi uses light intensity modulation to transmit the data.
Technically, Li-Fi is a light communication system capable of transmitting high speed data through visible light and ultraviolet and infrared spectra. In its current state, LED lamps are used to transmit data via visible light. It also has the ability to function in areas that are susceptible to electromagnetic interference.
LI-Fi (Light Fidelity) is a mobile wireless communication technology that uses light instead of radio frequency to send data between devices. It allows users to send and receive data through the beam of LED lights and has been called the next generation of wireless devices and is ready for seamless integration into 5G cores. Thanks to multi-gigabit transmission, it is considered to be more reliable, interference-free and secure than wireless technologies such as Wi-Fi and mobile communications.
Transmission of data is one of the most important and necessary daily activities in a fast-growing world. In the age of crowded data communications around the world, LIFI is a new type of wireless communication in which LED lights are used for data transmission. It uses standard LED light bulbs for data transmission and has a speed of 224 gigabits per second.
With our continuous exchange of information filling the electromagnetic spectrum of available Wi-Fi, Light-Fidelity (LI-Fi) has emerged as a solution to close this gap. It turns an LED lamp into an Internet data transmitter and creates a new form of high-speed optical wireless communication that uses the visible, infrared (IR) and light spectra. In order to transmit data, LI-Fi relies on the modulation of light frequencies that are invisible for the human eye in most lighting applications.
Light Fidelity (LI-Fi) is a bi-directional connected mobile communications technology, similar to Wi-Fi, that uses visible light such as ultraviolet, infrared and red light for transmission of data. Instead of using radio frequencies, LI-Fi uses LEDs for data transmission, as LEDs require less power than a normal Ethernet cable.
LI-Fi uses visible light communication which is 100 times faster than Wi-Fi with radio frequency. It uses LED household lamps for data transmission and has a speed of 224 gigabits per second. LI-Fi houses a photodetector that receives the light signal and a signal processing component that converts the data stream into content.
Visible light communication (VLC) is a data communication method using visible light at a frequency of 400 to 800 Hertz (TERA) with a wavelength of 780 nm to 375 nm. VLC technology uses fluorescent lamps and light-emitting diodes (LEDs) to transmit the signal. It works by switching the current of the LEDs on and off at high speed [6] and is fast enough to be noticed by the human eye as it does not show flickering.
The Li-Fi LEDs continue to transmit the data even when they are dimmed for human visibility and emit enough light to transport the data. Communication with the LEDs is possible without additional wiring, which reduces power consumption and allows a VLC.
For example, VLC technology is used in the Burj Khalifa, the tallest building in the world, because it illuminates the building in a specific pattern and can transmit messages over long distances, enabling communication with its neighbors. Since electromagnetic waves penetrate walls, Wi-Fi hotspots can serve a number of rooms, but it is not clear whether Li-Fi refers to visible light or communication. The point of visible light in an LI-Fi modem device is the fast data connection and the associated security.
For example, Internet service providers that use point-to-point (RF) connections for data transmission can benefit from switching to Li-Fi. AT & T has been using RF connections for years as it replaces fiber-optic cables with satellite communications.
This technology uses a part of the electromagnetic spectrum that is not used in the visible spectrum for data transmission (gigahertz radio waves). The basic ideology behind this technology is that data transmission leads to light whose intensity exceeds what the human eye can perceive. The use of wireless light transmission facilitates the allocation of frequencies.
LI-Fi devices circulate data through LEDs that emit intermittent flickering at speeds that are invisible to the human eye. This technology is so powerful that it has revolutionized the world of wireless communication. As an alternative to Wi-Fi, a new technology called Li-Fi (light-fidelity) will be introduced that improves original by the speed of the Internet while providing secure data transmission at a rate of 10 gigabytes per second.
Light-fidelity is a technology that uses electromagnetic waves in the visible range 380 nm to 750 nm [8]. The main distinguishing feature of Light Fidelity compared to other VLC technologies is that they are designed as PPP (point-to-point communication) by replacing cables, while Light F Fidelity has all the features of a complete network system for bi-directional multiuser communication. Since it represents the broad fidelity of light communication as the name implies, it offers a high transmission rate up to 10 Gbit / s [9 ], free bandwidth, a high degree of security and a high propagation capacity, in relation to which no other type of wave transmission (over water, over terrestrial surfaces or into space) is possible.
Both PLC and POE aim to reduce the cost of providing data and electricity over the same cable. Visual light communication ( VLC) is a one-way optical communication technology while Li-Fi allows two-way communication over multiple frequencies for mobile network connection connections. VLC and Li-FI are light-weight communications technologies, but Peter Babigian, a partner at Cerami Associates, a New York-based technology consultant, notes that Li-fi is a hybrid of VLC and IR communications.
