What is Li-Fi?
Li-Fi is the transmission of data through illumination by taking the fiber out of fiber optics by sending data through a LED light bulb. This varies in intensity faster than human eye can follow.
It is the fast and cheap wireless communication system which is optical version of the Wi-Fi.
How Li-Fi works?
Operational procedure is very simple, if the led is on, you transmit a digital 1, if its off you transmit a 0. The LEDs can be switched on and off very quickly, which gives nice opportunites for transmitting data. Hence all that us required is some LEDs and a controller that code data into those LEDs. We have to just vary the rate at which the LED's flicker depending upon the data we want to encode.
Thus every light source will works as a hub for data transmission.
Advantages of Li-Fi
- It is possible to achieve more than 10Gbps, the oretically allowing a high-definition film to be downloaded in 30 sec.
- Mostly powered by LEDs so it is cost efficient.
- Transmission of data is fast and easy.
- Its main advantage is it's bandwidth is 10,000 times than the radio waves.
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