Li-fi technology tested in real life for speed 100 times faster than Wi-fi

Light-based data transmission technology has begun to be tested in practice in some industrial offices.

About half a year ago, scientists proposed a new theory of data transmission technology through visible light waves to replace the current Wi-fi wireless transmission technology. This new technology is called Li-fi with the aim of creating a new wireless connection standard with better transmission speed.

Scientists have created and tested this new Li-fi data transmission technology in the laboratory and measured extremely high data transmission speeds of up to 224 Gigabits/s, which is equivalent to about 28 Gigabytes of data transferred from one place to another in 1 second.

Most recently, scientists brought the Li-Fi technology out of the lab for the first time and tested it at an office in Tallinn, Estonia, and recorded a data transmission speed of 1 Gigabyte per second via Li-Fi. That is 100 times faster than today's average Wi-Fi speed.

Li-Fi technology was first invented by Harald Haas, from the University of Edinburgh, Scotland in 2011. The idea came to him when he was demonstrating the ability to turn a single LED on and off repeatedly and Harald Haas suddenly realized that this way of transmitting information could be transmitted further than conventional cell towers. And the idea was born from there.

Li-fi uses visible light transmission (VLC) technology to transmit light signals in the frequency range of 400 to 800 TeraHertz, it works like an improved version of Morse code, binary codes are transmitted in the form of light by sending 2 states of light on and light off to the destination, these 2 states of light on and off will be equivalent to 2 numbers 0 and 1 of the binary system.

The on/off state of the LED is transmitted at high speed, creating a binary string carrying some information to the receiver. That is how Li-fi works.

According to genk.vn