Internet access with Li-Fi

October 13, 2015

How would you like it if your desk lamp connected you to the internet? Who would need Wi-Fi when there's Li-Fi?

The classic light bulbs have given us their lights for more than a century but since the appearance of lamps on the market LED, their days are numbered. The new lighting technology consumes a tenth of the power of incandescent lamps and has a lifetime 30 times more. However, it seems that the LED will not be limited to lighting alone.

In the coming years be ready for another technological revolution: communications Li-Fi. Current Wi-Fi technology, which uses radio waves, cannot keep up with the huge demand for wireless data services. In fact, projections say that by the year 2019, more than 10 billion devices, from smartphones and laptops will ask to connect wirelessly, but this will not be possible for everyone due to bandwidth limitations.

But what exactly is the Li-Fi and how it works. The Li-Fi ή light fidelity is a two-way, high-speed, optical networking technology, similar to the Wi-Fi, which uses visible light to transmit data. This is the technology designed for use in lamps LED, which have an internal chip. The chip modulates the intensity of the light so quickly that the modulation is not perceptible to the human eye. The light from the lamps is then received by the device's receptors.

But why is Li-Fi better than Li-Fi? Wi-Fi; Because first of all, the startup will be faster and have greater data transfer capabilities. A white led lamp will be able to start from a data rate 1.7 GB and reach the 10 GB if the lamps are multiplied.

Of course there are also disadvantages. In the event of a power failure, the technology is not available and the light source must be very close to the receiver.

From mirelen.