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Networking Via a Light Bulb: "LiFi" Achieving 10Gbit/s
engine




msg:4619793
 12:58 pm on Oct 29, 2013 (gmt 0)

Nice speed achieved, and it could be exciting to use these devices, if they can become cost-effective. The next thing we'll hear is people complaining about it flickering. hehehe

UK researchers say they have achieved data transmission speeds of 10Gbit/s via "li-fi" - wireless internet connectivity using light.

The researchers used a micro-LED light bulb to transmit 3.5Gbit/s via each of the three primary colours - red, green, blue - that make up white light.

This means over 10Gbit/s is possible.

Li-fi is an emerging technology that could see specialised LED lights bulbs providing low-cost wireless internet connectivity almost everywhere. Networking Via a Light Bulb: "LiFi" Achieving 10Gbit/s [bbc.co.uk]

 

graeme_p




msg:4620846
 8:49 am on Nov 3, 2013 (gmt 0)

The problem will be shadows: accidentally cover the sensor and it stops working.

LifeinAsia




msg:4620863
 3:15 pm on Nov 3, 2013 (gmt 0)

Another potential problem: interference from ambient light.

engine




msg:4621305
 2:53 pm on Nov 5, 2013 (gmt 0)

I would have thought it possible to use multiple light sources, switching between them as a receiver moves. Additionally, ambient light would be the equivalent of a wide band, and the transmitter and receiver is likely to be a narrower bandwidth, with filters. I don't doubt these aspect will reduce the efficacy, but it should give a much higher performance than current WiFi.

SevenCubed




msg:4621337
 4:39 pm on Nov 5, 2013 (gmt 0)

...and the transmitter and receiver is likely to be a narrower bandwidth...

So narrow in fact, that it looses its capacity to carry or emit luminosity but not its capacity to still contain the stream. Man doesn't yet have instruments to measure or understand the nature of dark matter's properties. Consciousness covert.

LifeinAsia




msg:4621348
 5:07 pm on Nov 5, 2013 (gmt 0)

Waiting for a whole new generation of "How many network administrators does it take to change a li-fi bulb?" jokes...

engine




msg:4621354
 5:16 pm on Nov 5, 2013 (gmt 0)

>...understand the nature of dark matter's properties.

I agree: I found some dark matter in the back of the fridge and I haven't got a clue what it was, or what it is now. ;)

SevenCubed




msg:4621356
 5:26 pm on Nov 5, 2013 (gmt 0)

Yummy :)

SevenCubed




msg:4621365
 6:06 pm on Nov 5, 2013 (gmt 0)

...with filters.

Ohhhhh. My cage was rattled, I have to add that yes there are 7 transducer-like filters. The lowest one is similar in nature to an incandescent bulb. It's filament is very delicate. The narrow gate in the highest filter prevents (fail-safe) the lowest filter's filament from getting zapped and burning it out (Able surrendered his first born).

But with proper "exercises" the lowest filament can be "trained" to handle higher capacities of dark matter much like a weight-lifter can develop large muscles.

When the smallest filament is (safely) ready the uppermost narrow gate of the first filter can then open more. Once that process takes effect then it's a gradual and safe process to create a safe balanced equilibrium between the lowest and highest.

At a certain point it becomes easy to sit in the (universal) library and read from a book even without the aid of an artificial light bulb because we ourselves become a natural source of light! It's a bright idea. It's an experience where even blind men can see. [youtube.com...]

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