ARLA/CLUSTER: Acesso à Internet sem fio via lâmpadas de Led´s
João Costa > CT1FBF
ct1fbf gmail.com
Segunda-Feira, 21 de Outubro de 2013 - 14:53:33 WEST
Wireless Internet access via light bulbs
Xinhua News reports that *Professor Chi Nan* of Shanghai's Fudan University
has used a LED bulb to provide a high speed internet connection
She explained that by using Li-Fi technology a light bulb with embedded
microchips can produce data rates as fast as 150 Mbps, much higher than the
average broadband connection in China.
"Wherever there is an LED light bulb, there is an Internet signal," said
Chi. "Turn off the light and there is no signal."
The term Li-Fi was coined by Harald Haas from the University of Edinburgh
in the UK and refers to a type of visible light communication technology
that delivers a networked, mobile, high-speed communication solution in a
similar manner as WiFi.
Read the Xinhua News article at
http://news.xinhuanet.com/english/china/2013-10/17/c_132806591.htm
The problem with Li-Fi technology is getting the Internet to the bulb. It
is understood all current Li-Fi systems make use of polluting Power Line
Telecommunications (PLT) which can render the HF radio spectrum unusable.
UKQRM are a group that fights PLT interference
http://www.ukqrm.org.uk/
UKQRM Yahoo discussion group
http://groups.yahoo.com/group/UKQRM
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