:quality(70)/cloudfront-us-east-1.images.arcpublishing.com/metroworldnews/IQZSJYHNDZDTNGYPCP6LGXTIFU.jpg "What is Li-Fi, a promising light-based wireless connection technology that could replace Wi-Fi – Firewire")
Technology Li-FiAbbreviation of “Light Fidelity” or “Fidelitat de lus”An innovative form of wireless connectivity It uses light to transmit data. Unlike conventional Wi-Fi that uses radio frequencies, Li-Fi uses the properties of visible, ultraviolet and infrared light to communicate.
The term Li-Fi was coined by Harald Haas during a talk at TEDGlobal in 2011. Since then, work has been going on to improve and improve this technology. However, he explains Hard zoneIts implementation is slow Technical challenges, especially in terms of transmission speed and network security.
How is it different from Wi-Fi?
The main difference between Li-Fi and WiFi is in the data transfer mode. When Wi-Fi uses radio frequency, it induces an electrical voltage in the receiving antenna, Li-Fi modifies the intensity of light to transmit information. This indicates that a Li-Fi connection has been established through LED bulbs, as they can precisely control the intensity of the light.
One of the potential benefits of Li-Fi Its ability to be used in areas sensitive to electromagnetic interference such as aircraft cabins and hospitals. In addition, its use of visible light allows for greater security, as the signal cannot pass through walls, making it more difficult to intercept.
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However, Li-Fi presents some challenges. For example, in order for an LED bulb to function properly, its use must be limited to situations where lighting is required. Additionally, the Li-Fi signal is affected by obstacles and is attenuated as the light emitted by the light source leaves the cone. This means that transmitters will be needed in every room to ensure a reliable connection.
Recently, the Institute of Electrical and Electronics Engineers (IEEE) announced the IEEE 802.11bb standard for light-based wireless communications. The standard is expected to help companies accelerate the development and adoption of Li-Fi solutions and improve interoperability and security in this emerging technology.
While Li-Fi shows great potential, it is important to note that it will not completely replace Wi-Fi and 5G anytime soon, as it still has significant advantages in terms of radio wave range and ability to pass through opaque materials. However, Li-Fi can be a better solution in highly congested areas such as shopping malls, where multiple light points can be used to create an efficient data transmission network.
