On Sat, Aug 6, 2011 at 5:30 PM, Owen Densmore <
[hidden email]> wrote:
> This is an interesting idea: LiFi .. wireless in the light spectrum rather
> than radio spectrum.
>
>
http://www.ted.com/talks/harald_haas_wireless_data_from_every_light_bulb.html>
> The idea is simple: using LED light bulbs, and a small modulator, the light
> can translate considerable amounts of data. And also stop the Tin Hat
> controversy.
> But I'm confused by one thing: how to make it work bi-directionally.
I was thinking that if you actually separated the routes of
transmission from reception (use LEDs for reception, and standard RF
for transmission), there could be some security gains from the fact
that a cracker would have access to both (most conversations are
fairly unintelligible if you don't hear the both sides).
Additionally, it seems in theory that the bandwidth can be doubled as
you're no longer requiring any channel to do double-duty or
full-duplex.
But those thoughts could totally be bone-headed... It is sort of a
cool idea though....
> It certainly is a fascinating idea .. simply the drive to convert to LED
> light bulbs would save billions in electricity consumption.
That's a good point.
mark
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