How Li-Fi Testing Will Boost Internet Speeds in Real-Time?
The newly tested wireless communication technology Li-Fi promises to provide high Internet speeds by increasing bandwidth by 100 times. A recent testing result showed that Li-Fi can manage to achieve speed up to 1 Gbps, with a capability of downloading more than 25 1GB movies in a second. It might take some time to sink this fact; however, there are already a lot of researches going on Li-Fi.
More about Li-Fi
Li-Fi is a visible light communication (VLC) system, which runs with wireless communications. The switching ON and OFF of LEDs, result in transferring data at a very high-speed. According to Professor Harald Haas, light-bulbs could act as wireless routers and a single LED bulb can transmit far more data than a cellular tower. Today he owns a company by the name Pure Li-Fi (coined by him).
How it Works
A Signal-processing LED is fitted in an overhead lamp, which streams data embedded in its beam at a very high-speed. A receiver dongle then converts the tiny changes into an electric signal. This signal is converted back to data stream and transmitted to a computer or mobile device.
Li-Fi and Wi-Fi works almost similarly in terms of transmitting data; however, Li-Fi uses visible light and Wi-Fi run on radio waves. The Li-Fi VLC system uses photo-detector to receive light signals and stream the content using a signal processing element. The LED light source can be dipped and dimmed at an extremely high-speed. This rapid dimming of LED bulbs is converted into electrical signal. The signal is then converted back to binary data stream.
Characteristics of Li-Fi
|Speed||Very fast transfer speeds (more than 1Gbps)|
|Transfer Medium||LED light bulbs|
|Spectrum Range||10,000 more spectrum as compared to Radio frequency spectrum|
|Operating Frequency||100 Terra Hz|
|Cost||Much cheaper than Wi-Fi|
|Privacy||Secure data transfers, as light is blocked by walls|
|Ecological impact||Low, as there is no harmful radiations|
|Applications||Can be used in airlines, undersea explorations, hospitals, offices and homes for internet usage|
Factors Affecting Li-Fi
Since, visible lights can’t travel through walls; Li-Fi can’t work in multiple rooms as compared to Wi-Fi network. It requires light to be available all the times, which can cause issues in domestic settings.