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Researchers claim to have achieved Wi-Fi at lightning speed of 42.8Gbit per second which is 100 times Faster

The team from Eindhoven University of Technology in the Netherlands came up with a wireless network based on harmless infrared rays to beat slow wi-fi

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London, March 19, 2017: Even if you have the very best Wi-Fi system available, you won’t get more than 300Mbit per second speed in total.

However, researchers now claim to have achieved Wi-Fi at a lightning speed of 42.8Gbit per second which is 100 times faster.

The team from Eindhoven University of Technology in the Netherlands came up with a surprising solution to beat slow Wi-Fi: a wireless network based on harmless infrared rays.

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The capacity is not only huge (more than 40Gbit/s per ray) but also there is no need to share since every device gets its own ray of light, said lead researcher Joanne Oh.

Oh managed a speed of 42.8Gbit/s over a distance of 2.5 metres.

For comparison, the average connection speed in the Netherlands is two thousand times less (17.6Mbit/s).

The Eindhoven system has so far used the light rays only to download; uploads are still done using radio signals.

The system conceived in Eindhoven is simple and, in principle, cheap to set up.

The wireless data comes from a few central ‘light antennas’, for instance mounted on the ceiling, which are able to precisely direct the rays of light supplied by an optical fibre.

Since there are no moving parts, it is maintenance-free and needs no power.

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The antennas contain a pair of gratings that radiate light rays of different wavelengths at different angles.

If you walk around as a user and your smartphone or tablet moves out of the light antenna’s line of sight, then another light antenna takes over.

Moreover, there is no longer any interference from a neighbouring Wi-Fi network, the researchers noted.

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The work of Oh is part of the wider ‘BROWSE’ project headed by professor of broadband communication technology Ton Koonen, and with funding from the European Research Council. (IANS)

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A security clearance allows a person access to classified national security information or restricted areas.

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Former CIA Director John O. Brennan speaks at the Council on Foreign Relations in Washington, March 11, 2014. President Donald Trump revoked Brennan's security clearance Wednesday. VOA
Former CIA Director John O. Brennan speaks at the Council on Foreign Relations in Washington, March 11, 2014. President Donald Trump revoked Brennan's security clearance Wednesday. VOA

U.S. President Donald Trump on Wednesday revoked the security clearance of former CIA Director John Brennan. We take a look at what that means.

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A security clearance allows a person access to classified national security information or restricted areas after completion of a background check. The clearance by itself does not guarantee unlimited access. The agency seeking the clearance must determine what specific area of information the person needs to access.

What are the different levels of security clearance?

There are three levels: Confidential, secret and top secret. Security clearances don’t expire. But, top secret clearances are reinvestigated every five years, secret clearances every 10 years and confidential clearances every 15 years.

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According to a Government Accountability Office report released last year, about 4.2 million people had a security clearance as of 2015, they included military personnel, civil servants, and government contractors.

Why does one need a security clearance in retirement?

Retired senior intelligence officials and military officers need their security clearances in case they are called to consult on sensitive issues.

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Can the president revoke a security clearance?

Apparently. But there is no precedent for a president revoking someone’s security clearance. A security clearance is usually revoked by the agency that sought it for an employee or contractor. All federal agencies follow a list of 13 potential justifications for revoking or denying a clearance, which can include criminal acts, lack of allegiance to the United States, behavior or situation that could compromise an individual and security violations. (VOA)