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Forget Wi-Fi, boffins get 150Mbps Li-Fi connection from a lightbulb

D

Don McKenzie

Jan 1, 1970
0
Forget Wi-Fi, boffins get 150Mbps Li-Fi connection from a lightbulb

Scientists in China are reporting great success in replacing traditional Wi-Fi radio traffic with Li-Fi, a system that
uses the light signals from an LED lightbulb to provide a line-of-sight data stream.

Li-Fi, or light fidelity, was developed by Professor Harald Haas at the University of Edinburgh, who was disenchanted
with radio as a data transmission tool. Using light instead of radio opens up 10,000 times more available spectrum than
radio – and it's highly energy efficient compared to radio towers that use most of their power for cooling and only five
per cent for data transmission.

Read the full story at:
http://www.theregister.co.uk/2013/1...get_150mbps_lifi_connection_from_a_lightbulb/

also:
http://www.slashgear.com/302172-19302172/
http://www.bbc.co.uk/news/technology-24579776
http://en.wikipedia.org/wiki/Li-Fi


--
Don McKenzie

All Olimex products now 30% off normal Olimex Prices.

$25 for an Olinuxino Linux PC:
http://www.dontronics-shop.com/olinuxino.html

The World's Cheapest Computer:
DuinoMite the PIC32 $20 Basic Computer-MicroController
http://www.dontronics-shop.com/the-maximite-computer.html
Add VGA Monitor/TV, and PS2 Keyboard, or use USB Terminal
Arduino Shield, Programmed in Basic, or C.
 
D

Damian

Jan 1, 1970
0
Don McKenzie said:
Forget Wi-Fi, boffins get 150Mbps Li-Fi connection from a lightbulb

Scientists in China are reporting great success in replacing traditional
Wi-Fi radio traffic with Li-Fi, a system that uses the light signals from
an LED lightbulb to provide a line-of-sight data stream.

Li-Fi, or light fidelity, was developed by Professor Harald Haas at the
University of Edinburgh, who was disenchanted with radio as a data
transmission tool. Using light instead of radio opens up 10,000 times more
available spectrum than radio – and it's highly energy efficient compared
to radio towers that use most of their power for cooling and only five per
cent for data transmission.

Read the full story at:
http://www.theregister.co.uk/2013/1...get_150mbps_lifi_connection_from_a_lightbulb/

also:
http://www.slashgear.com/302172-19302172/
http://www.bbc.co.uk/news/technology-24579776
http://en.wikipedia.org/wiki/Li-Fi


--
Don McKenzie

All Olimex products now 30% off normal Olimex Prices.

$25 for an Olinuxino Linux PC:
http://www.dontronics-shop.com/olinuxino.html

The World's Cheapest Computer:
DuinoMite the PIC32 $20 Basic Computer-MicroController
http://www.dontronics-shop.com/the-maximite-computer.html
Add VGA Monitor/TV, and PS2 Keyboard, or use USB Terminal
Arduino Shield, Programmed in Basic, or C.

Must be the wireless world's equivalent of the fibre optics.
 
Y

yaputya

Jan 1, 1970
0
Rod Speed said:
Not if you use a mirror.

If LiFi is only replacing the last link to the PC etc. I can't see any real advantage over WiFi.
Still need cable/fibre etc. or maybe you could use WiFi to talk to the LED ;)
 
D

Don McKenzie

Jan 1, 1970
0
If LiFi is only replacing the last link to the PC etc. I can't see any real advantage over WiFi.
Still need cable/fibre etc. or maybe you could use WiFi to talk to the LED ;)

Hmmmm.

Having posted this news myself after thinking, "what a nifty new idea". With a few years of development and testing, it
could a very viable means of communication.

But then two questions arouse.
How do you do two way comms with a LED?
How do you connect the Internet to the micro in the LED lamp?

I couldn't see anything in the stories I read.

Perhaps all the magic is done with Wi-Fi, and this Li-Fi only replaces the last transmission link (OK secured) as
yaputya.rightlegout suggests.
:)

Don...


--
Don McKenzie

All Olimex products now 30% off normal Olimex Prices.

$25 for an Olinuxino Linux PC:
http://www.dontronics-shop.com/olinuxino.html

The World's Cheapest Computer:
DuinoMite the PIC32 $20 Basic Computer-MicroController
http://www.dontronics-shop.com/the-maximite-computer.html
Add VGA Monitor/TV, and PS2 Keyboard, or use USB Terminal
Arduino Shield, Programmed in Basic, or C.
 
R

Rod Speed

Jan 1, 1970
0
If LiFi is only replacing the last link to the PC etc. I can't see any
real advantage over WiFi.

The most obvious one is the speed and the fact that there would be
no interference with the LiFi in adjacent houses etc. With a massive
downside that you couldn’t have a single router with most houses.
Still need cable/fibre etc. or maybe you could use WiFi to talk to the LED
;)

You'd need to to cover the whole house.
 
P

Petzl

Jan 1, 1970
0
Not if you use a mirror.

EVERY home and business was about to or is to get optic network so not
really much point? Just get two or more outlets my office had around
twenty in various rooms
--
Petzl
Q: What has Tony Abbott promised Murdoch?
A: A broadband network that will be so slow as to offer no competition to his pay TV interests.

http://tinyurl.com/LOBBYIST-RUN-ABBOTT
http://www.abc.net.au/7.30/content/2013/s3861931.htm

FTTN, while an incremental improvement on what we have now,
is a short-sighted waste of time and money that will still
leave Australia lagging behind the rest of the developed World,
squandering billions of dollars on obsolete technology in the process.
 
R

Rod Speed

Jan 1, 1970
0
EVERY home and business was about to or is to get optic network

No, nothing like that. Even the NBN was only ever sposed to get
to be 93% of those with FTTP.
so not really much point? Just get two or more outlets
my office had around twenty in various rooms

But few would be that silly in the home.
 
P

Petzl

Jan 1, 1970
0
No, nothing like that. Even the NBN was only ever sposed to get
to be 93% of those with FTTP.
7% missing out big deal
But few would be that silly in the home.

You don't know!
In the 50's our house had 1 power point in living Room
Kitchen had a stove power point for fridge one for kettle
Each room had a light bulb
Now heaps of power points every where even in roof space and outside

I have a WD media "gazo"
http://wdc.com/en/products/products.aspx?id=330
Internet connectivity is pointless with copper wire
I use a 1TB drive USB 3 play to my video collection from
http://www.lacie.com/au/products/product.htm?id=10564
Trouble is the media is only USB 2 and speed is the thing
--
Petzl
Q: What has Tony Abbott promised Murdoch?
A: A broadband network that will be so slow as to offer no competition to his pay TV interests.

http://tinyurl.com/LOBBYIST-RUN-ABBOTT
http://www.abc.net.au/7.30/content/2013/s3861931.htm

FTTN, while an incremental improvement on what we have now,
is a short-sighted waste of time and money that will still
leave Australia lagging behind the rest of the developed World,
squandering billions of dollars on obsolete technology in the process.
 
R

Rod Speed

Jan 1, 1970
0
7% missing out big deal

Its very far from clear that it would have ever got to 93%
You don't know!

I do know that most don't even bother with Cat5 or Cat6
in most rooms, most only use wifi around the house.
In the 50's our house had 1 power point in living Room
Kitchen had a stove power point for fridge one for kettle
Each room had a light bulb

We had a lot better than that in the 50s.
Now heaps of power points every where even in roof space and outside

I had that in the 60s.
I have a WD media "gazo"
http://wdc.com/en/products/products.aspx?id=330
Internet connectivity is pointless with copper wire

Bullshit. Works fine for me.
I use a 1TB drive USB 3 play to my video collection from
http://www.lacie.com/au/products/product.htm?id=10564
Trouble is the media is only USB 2 and speed is the thing

I play recorded TV on my laptop from the PVR over
wifi when bottling the beer etc and it works fine.
 
V

Vote 99% Greens

Jan 1, 1970
0
Don said:
Forget Wi-Fi, boffins get 150Mbps Li-Fi connection from a lightbulb

Scientists in China are reporting great success in replacing
traditional Wi-Fi radio traffic with Li-Fi, a system that uses the
light signals from an LED lightbulb to provide a line-of-sight data
stream.
Li-Fi, or light fidelity, was developed by Professor Harald Haas at
the University of Edinburgh, who was disenchanted with radio as a
data transmission tool. Using light instead of radio opens up 10,000
times more available spectrum than radio – and it's highly energy
efficient compared to radio towers that use most of their power for
cooling and only five per cent for data transmission.
Read the full story at:
http://www.theregister.co.uk/2013/1...get_150mbps_lifi_connection_from_a_lightbulb/

also:
http://www.slashgear.com/302172-19302172/
http://www.bbc.co.uk/news/technology-24579776
http://en.wikipedia.org/wiki/Li-Fi


--
Don McKenzie

All Olimex products now 30% off normal Olimex Prices.

$25 for an Olinuxino Linux PC:
http://www.dontronics-shop.com/olinuxino.html

The World's Cheapest Computer:
DuinoMite the PIC32 $20 Basic Computer-MicroController
http://www.dontronics-shop.com/the-maximite-computer.html
Add VGA Monitor/TV, and PS2 Keyboard, or use USB Terminal
Arduino Shield, Programmed in Basic, or C.

NASA gets 622 megabits per second with Lasers.

NASA Is Now Communicating With Spacecraft Via Laser
Over the weekend, NASA and MIT made spaceflight history when their Lunar
Laser Communications Demonstrator (LLCD) beamed data at 622 megabits per
second—5 times the current rate—back from a spacecraft in lunar orbit.


http://www.popularmechanics.com/sci...er-communication-experiment-succeeds-16068586
 
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