Wednesday, November 25, 2015

Lifi: one hundred times faster than the wifi – BBC

Lifi Image copyright Thinkstock

There is no doubt that the emergence of wifi changed the way the Internet is used and has become indispensable for most people. But it seems that is overdue. And the culprit is called Lifi.

While this wireless technology was released four years ago, has been now when they have completed the first test in the real world, that is, outside the laboratory.

The results have been astounding. transmission speed reaches a hundred times greater than the current wireless

In particular, it has been achieved speed data transmission 1GB per second , according to the company Velmenni Estonia, which is conducting these tests.

And even higher speeds are expected, because in experiments conducted in laboratories at the University of Oxford has reached the 22GB per second.

“We have designed a solution of intelligent lighting for industrial environments where data communication is performed through the light. We are also doing a pilot project creating a network of Lifi to access Internet in your office, “said Deepak Solanki, CEO of the technology company Velmenni.

How It Works

The Lifi technology uses visible light this transmission and only uses a light emitting diode LED.

Image copyright Thinkstock
Image caption Companies like Samsung, LG are interested in making smartphones with light sensors Lifi.

In 2011, the creator of this technology, the scientist at the University of Edinburgh Harald Hass, showed that a single LED can transmit more data with an antenna . telephony

Haas says an LED bulb can be used “to transmit ultrafast Internet way”

The Lifi allow a lamp has two functions.: providing light and ensure connectivity to the router (router).

At the International Consumer Electronics Show (Consumer Electronics Show) 2012, held in the US city of Las Vegas, this technology proved, using a pair of smart phones to exchange data and varying the intensity of light from their screens, with a maximum distance of ten meters.

It has also the Lifi is safer shown that wifi and does not interfere with other systems, so it could be used without problems for example in a plane, but still has a major drawback, it is that light can not pass through walls.

End of wifi?

Image copyright
Image caption The Lifi technology uses visible light and a light emitting diode LED.

But despite its advantages, is not likely to replace the wireless system as a whole in the near future.

Instead . Both technologies can be used together to create safer and faster networks.

Researchers are working on the adaptation of existing devices to be compatible with Lifi.

PureLifi the company created by Haas and his team, is offering an application for Safe Access, said ScienceAlert .

The French technology company Oledcomm is also working with Lifi and is installing its own system in hospitals.

At the same time, companies like Samsung, LG and other electronics manufacturers are interested in making smartphones with light sensors Lifi.

Haas says Lifi could combine with wireless data transmission to achieve a cleaner and brighter future.

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