LiFi 100x Faster Than WiFi

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>LED
>lightbulb

Same way a remote control works with a television. You need a LED in the computer to send info back to the hub, and it needs a relatively unimpeded path back.

Alternatively, since most bandwidth is downloads, you could use visible light only to transmit from hub to computer, and the usual radio frequencies to go from computer to hub (or bypass the hub and go directly back to the main router).

If you're only downloading the movies, having a 1Gbps uplink isn't important. Think of a hybrid system with a WiFi uplink, LiFi downlink. (Probably a WiFi downlink too as a secondary.)

>>7681820
Most computers have some sort of LED in the back, maybe some sort of software could be made to drive that, alternatively, there could be some sort of USB dongle, it would be relatively inexpensive.
Also, if a computer transmitted back using radio, wouldn't speed be sacrificed?
>>7681817
lightbulb is technically a blanket term for any sort of electroluminescent material in a bulb, which an LED falls under, now if he said incandescent lightbulb, that would have been much different.

>>7681820
>>7681824
>If you're only downloading the movies, having a 1Gbps uplink isn't important. Think of a hybrid system with a WiFi uplink, LiFi downlink. (Probably a WiFi downlink too as a secondary.)
>>7681820
>Alternatively, since most bandwidth is downloads, you could use visible light only to transmit from hub to computer, and the usual radio frequencies to go from computer to hub (or bypass the hub and go directly back to the main router).

Yes, my thoughts too.

This is phonotics or however you spell it. This is the new field of engineering. Lots of companies are working on computers that will work on photonics. Using photons rather than wires.

>>7681785
>When you pass a current through an LED, the LED emits photons
kool

That seems inefficient. After all, why would the light need to be visible? Why not make it infrared?

>>7681985
IR dosnt travel through air aswell as light? meiby?

>>7681999
What about a form of light that travels through stuff really well? Like what if there was light that traveled through things so well it could travel through walls?

>>7681882
>using photons rather than wires
so what we've been doing for a century with radio and cellphones and WiFi?

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>>7682009
Is it love?

>>7682009
Like... Radio waves? No, its not possible.

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>>7682016
Well, what is love?

>>7681785
If what you are saying is correct then this is stupid it is reduces the capability of free "wifi" for for all so that you can have faster "wifi" at your house and only your house. Even then it is impractical since you could really only use "Wfi" indoors.
This is going backwards not forwards.

>>7681824
>>7681785
Dudes just use, get this, TWO LEDs. Every generator is also a motor, and every LED is also a light sensor

>>7681785

" Li-Fi refers to visible light communications (VLC) technology, which delivers high-speed, bidirectional, networked mobile communications in a manner similar to Wi-Fi. "

BIDIRECTIONAL

CDS PHOTOSENSOR -A LIGHT SENSOR NEXT TO EACH LED ...

slight changes in light output can be detected but are not detected by human eyesight - hence the led doesn't blink...

sunlight disrupts the process (weakens detection) so only indoors shaded

http://www.ibtimes.com/what-li-fi-meet-revolutionary-wireless-technology-100-times-faster-wi-fi-2199883

I listened to this guy talk at the National Museum of Scotland in 2013.
At the end a bunch of old people were asking him if this meant that they could take down the telephone poles that ruined the view from their backyards

>>7682229
thats right, the modulation is only a fraction of the DC level

>>7682033
no dipshit, it's an improvement that is obviously limited in it's applicability, and nobody is saying it will replace wifi entirely. It could be very useful in industrial network systems or on manufacturing floors
>this bluetooth thing is bullshit, you have to be close to your phone. technology is going backwards
>this cloud thing is bullshit, you have to have an internet connection to access your files. technology is going backwards
>satellite radio is bullshit. FM radio doesn't cut out when its . Technology is going backwards

>>7681785
Couldn't this mechanism theoretically work just as well through fiber optic cable?

So, if this tecnology were to replace wifi or at least create a market would you still stay with the same ISP? If this were implemented in phones that would be really useful

>>7682436
how would that work for free space communication?

point to point fiber links already exist for both long haul and short haul, and speeds are in the TB/s

this is useful in a different way b/c LED emission is basically isotropic, or at least hemispherically isotropic so you wouldn't need a device that is well aligned. A fiber needs to be aligned to a receiver with some sort of connector

>every room must have a lightbulb hub, and it cannot be used outside
wow its fucking nothing

>>7682436
It's more or less how fiber optics themselves already work. Maximum bandwidth is still about the difference you're capable of putting between your signal and carrier wave, which a medium like what fiber optics are made of, definitely has.

>>7682448
>would you still stay with the same ISP?
Yeah, generally. I mean today you might switch to a new ISP if they offer to lend or rent you a better router but you can always aquire your own.

>100x the speed of WiFi
My ass.
802.11ac wifi is already capable of >1 GBPS. How is this an achievement?

I know optical communication is capable of far higher bandwidths, but I'm not seeing it here.

>>7682015
Using photons through wires. This field is to transmit it through light itself with no medium.

>>7681820
That defeats the whole purpose if you go back to using radio waves.
There is no benefit over 802.11ac for any home users.

>>7682769
And if there were a benefit, they'd just call it 802.11j or something. Because that's what WiFi is.

>>7682769
>That defeats the whole purpose if you go back to using radio waves.
Not really, you don't need a tb/s uplink.

>>7681953
Science right? Amazing what we can do nowa days

>>7682027
>>7682009
Gamma rays.

Ionizing radiation for communication technology when