LED lights could supplement WiFi

LED lights could supplement WiFi

Researchers from the University of Edinburgh in the UK found that transmitting digital data via LEDs at the same time as using them to generate light does not make the light dimmer or change its colour.

It also does not make LEDs more energy- hungry. These concerns have held back the more widespread adoption of Light Fidelity, or LiFi, which uses household LEDs to enable data transfer, said Wasiu Popoola of the University of Edinburgh, who led the research.

However, the findings help eliminate key hurdles to using LEDs to help satisfy the increasing global thirst for wireless communications.

Preserving the quality of lighting is, in particular, a vital consideration as it can have a major effect on the physical and mental wellbeing of people in both their homes and their workplaces.

LEDs have secured a huge increase in their share of the worldwide lighting market in recent years, as well as being used extensively in TV and other displays.

Although it has long been known that LEDs can be 'piggy- backed' to transmit data to and from mobiles, tablets, sensors and other devices, questions have surrounded the ability to do this without affecting LEDs' core capabilities or the money- saving and 'green' benefits that make them so popular.

Focusing on LEDs producing 'warm white' and 'cool white' light, researchers looked at two different data transmission techniques: on-off keying, where the LED works like Morse code, switching on and off extremely rapidly and imperceptibly to human eyes; and continuous signalling, where imperceptible changes in light intensity are used to achieve the same goal.

Neither technique was found to significantly reduce the lightbulbs' brightness or their life expectancy, or to cause any significant change in the colour of the light.

Both techniques also produced only a negligible change in the heat generated by the LEDs - a key consideration as any temperature increase would indicate the LED using more electricity to produce light, making it less energy-efficient and less carbon-friendly.

"Our ever more connected world will need more bandwidth than the overcrowded Radio Frequency part of the spectrum can provide," said Popoola.


PostedOn: 12 Oct 2017 Total Views: 58




Artificial intelligence finds solar syst...

Artificial intelligence finds solar system with 8 ...

A solar system with as many planets as our own has been discovered with the help of NASA's Kepler space telescope and artificial intelligence, the US space agency said. "Our solar system now is tied for most number of planets around a single star," NASA said in a statement on Wednesday. However, non...

15 Dec 2017

Twitter makes Tweetstorms easier with th...

Twitter makes Tweetstorms easier with threads

The micro-blogging site Twitter has announced that it would make it easier for users to build Tweetstorms by linking together posts in threads to expound at length at the famously short-form messaging service. With the new feature, users who create threads by stitching tweets together to tell a long...

14 Dec 2017

Apple's 'most-powerful Mac ever’

Apple's 'most-powerful Mac ever’

Appleunveiled its desktop PCiMacPro at its annual developer's conference WWDC in June this year. At the event, the company termed the new iMac Pro as its "most-powerful Mac ever made"."We're thrilled to give developers and customers a sneak peek at iMac Pro. This will be our fastest and most powerfu...

13 Dec 2017

Do aliens exist? NASA set to make big an...

Do aliens exist? NASA set to make big announcement...

The National Aeronautics and Space Administration (NASA) will be holding a press briefing on December 14, where the team is likely to make a big announcement over the findings of alien life. The press conference will be addressed by those scientists who had been involved in the study of thousands of...

11 Dec 2017

Google announces several India-first pro...

Google announces several India-first products & fe...

Firming up its commitment to connect the next billion Indians by focusing on entry-level smartphones, Google on Tuesday announced several India-first products and features, some of which will be rolled out in other countries soon. Currently, there are nearly 400 million internet users in India, alon...

09 Dec 2017

TRAI releases recommendations on Net Neu...

TRAI releases recommendations on Net Neutrality

Telecom regulator TRAI on Tuesday proposed restrictions on service providers from entering into agreements which lead to discriminatory treatment of content on the Internet. Issuing the recommendations on Net neutrality, TRAI has also suggested a multi-stakeholder body comprising telecom and Interne...

28 Nov 2017

World's first AI politician is now a rea...

World's first AI politician is now a reality!

Scientists have developed the world's first artificial intelligence politician, that can answer a person's queries regarding local issues such as policies around housing, education and immigration. The virtual politician, called SAM, was created by Nick Gerritsen, a 49-year-old entrepreneur in New Z...

27 Nov 2017

World's first 'virtual politician' is he...

World's first 'virtual politician' is here

In an attempt to create a representative that listens to people and responds to their questions with facts and policy positions, a first-ever Facebook Messenger chatbot named "SAM" has been introduced in New Zealand. "'SAM' doesn't currently hold any office -- nor could it likely legally run for one...

27 Nov 2017