How Li-Fi Testing Will Boost Internet Speeds in Real-Time?

fastest-li-fi-internetThe 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.


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