Raise awareness of environmental health issues in order to better protect our children and future generations.

EMF Studies

20 March 2017

The End of Wi-Fi?

Researchers have devised a new method that relies on
central "light antennas" to beam ray of different wave-
lengths to wireless devices.  Other research teams, including
one at Boston University, have revealed similar plans
in recent months.
The end of wifi woes? Researchers reveal 'li-fi' system 100 times faster that never becomes overloaded
by Cheyenne MacDonald for Dailymail.com, 
17 March 2017

  • Method relies on central ‘light antennas’ to beam rays of different wavelengths
  • This means networks won’t get jammed by several competing devices
  • Researchers say it's 100 times faster than current systems, with bigger capacity

Wireless networks crafted from rays of infrared light could soon allow you to connect to the internet 100 times faster than current systems.

Researchers have devised a new method that relies on central ‘light antennas’ to beam rays of different wavelengths to wireless devices – meaning networks won’t get jammed by several competing devices.

A light-based system, also known as ‘Li-Fi,’ could make wireless networks much more secure, and researchers now say it could hit the stores in just five years.

The new system developed by researchers at Eindhoven University of Technology would also have a huge capacity, of more than 40 Gbit/s per ray.

It would rely on direct rays of light from an optical fiber, and as it has no moving parts, it would be a maintenance free system that requires no power, the researchers explain.

Several light antennas could be set up in a given area, each equipped with a pair of gratings that beam light rays at different wavelengths and angles.

So, if you’re walking around while using a smartphone or tablet and move out of the direct beam, another will take its place.

The direction of the ray of light can also be changed by adjusting the wavelength, according to the researchers.

The light-based network can track the precise location of each wireless device based on its radio signal.

And, to add more devices, you’d just have to assign a different wavelength from the same antenna.

This means devices would not have to share capacity – allowing for much faster connection, and eliminating interference from neighbouring networks.

Continue reading:
http://www.dailymail.co.uk/sciencetech/article-4324694/End-wifi-woes-Infrared-100-times-faster.html

No comments:

Post a Comment