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What is Li-Fi?
Source:Original | Author:Calio Huang of C&T RF Antennas Inc | Publish time: 2019-12-07 | 1054 Views | Share:


In the technical solution for future communications, some people think that the whole house's smart terminal is enough to connect to 5G, and some people think that WiFi will still stand on the throne of cost performance. Since each communication method has its own advantages and disadvantages, the brain hole may be larger, such as using the light bulb to go online.

At present, the more likely fate of Li-Fi is still in places where high-security requirements such as radio signals are not allowed (such as radio astronomy telescopes, nuclear power plants, etc.) are easily interrupted or missing. The emergence of a complementary identity helps to achieve more stable and high-speed communication. And because there are no spectrum restrictions, Li-Fi will also provide the next technology exit for crowded 5G.

It ’s not that I'm whimsical. In 2011, a professor at the University of Edinburgh, Harald Hass, made a speech using LED light sources to transmit data wirelessly. The novel term Li-Fi (light fidelity) was seen as a substitute for The technological light of WiFi.

However, this technology is too advanced and unstable, which has caused it to stay in the marketing tactics of laboratories and some LED manufacturers. Compared with the momentum of 5G, Li-Fi, which has also been regarded as a "WiFi disruptor", is still an interesting gadget for niche geeks, and its development trend is not embarrassing. Does it really have that capability and necessity and can replace WiFi into our living space? The different trends of Li-Fi and 5G technologies also reflect the "hidden rules" of technology changes?

What is special about Li-Fi, which has been placed on the Internet by light bulbs?

With the announcement of the establishment of a new company to research (visible light wireless communication) technology in the United States, LightPointe makes Li-Fi appear in people's vision again. As the name suggests, Li-Fi uses visible light for wireless data transmission, and some people call it "light fidelity technology." The working principle is simply that visible light such as LED lights is used as the transmission source of the information transmission system. The chip is implanted to form a network access point similar to a WiFi hotspot, and the light source is controlled to send high-speed signals to control the network transmission of the terminal receiver.