Trends in Distance Education and Open Learning: Policy ... - ADEA
Trends in Distance Education and Open Learning: Policy ... - ADEA
Trends in Distance Education and Open Learning: Policy ... - ADEA
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7. CSIRO breakthroughBroadb<strong>and</strong> com<strong>in</strong>g wirelessly to the bushA major CSIRO breakthrough <strong>in</strong> wireless technology designed to br<strong>in</strong>g broadb<strong>and</strong> topeople liv<strong>in</strong>g beyond the optical fibre network, will be unveiled <strong>in</strong> Sydney tomorrow.3 November 2010The first half of CSIRO’s Ngara technology will enable multiple users to upload<strong>in</strong>formation at the same time, without reduc<strong>in</strong>g their <strong>in</strong>dividual systems’ data transferrate of 12 Mbps.“Someone who doesn’t live near the fibre network could get to it us<strong>in</strong>g our new wirelesssystem,” CSIRO ICT Centre Director Dr Ian Oppermann said.“They’d be able to upload a clip to YouTube <strong>in</strong> real-time <strong>and</strong> their data rate wouldn’tchange even if five of their neighbours also started upload<strong>in</strong>g videos.“But the really impressive part is the spectral efficiency our team has achieved.”The radio spectrum is a f<strong>in</strong>ite <strong>and</strong> highly valuable, natural resource."Even with just half of our system completed, CSIRO is already help<strong>in</strong>g def<strong>in</strong>e the futureof wireless technology."Dr Ian Oppermann, ICT Centre DirectorCSIRO’s spectral efficiency is three times that of the closest comparable technology <strong>and</strong>the data rate is more than 10 times the <strong>in</strong>dustry’s recently declared m<strong>in</strong>imum st<strong>and</strong>ard.Spectral efficiency is about pack<strong>in</strong>g as many bits of <strong>in</strong>formation as possible <strong>in</strong>to thechannel (frequency range) allocated for its transmission. CSIRO’s 12 Mbps, six-usersystem works <strong>in</strong> the space of one television channel, which is seven megahertz (MHz)wide. CSIRO is achiev<strong>in</strong>g spectral efficiency of 20 bits per second per Hertz (20 b/s/Hz).“Even with just half of our system completed, CSIRO is already help<strong>in</strong>g def<strong>in</strong>e the futureof wireless technology,” Dr Oppermann said.Wireless Research Director for Gartner, Rob<strong>in</strong> Simpson, said the most promis<strong>in</strong>g aspectof CSIRO’s Ngara technology is that it aims to re-use old analog TV channels.“This means any rural property or bus<strong>in</strong>ess that can currently receive TV signals could <strong>in</strong>future connect to high-speed <strong>in</strong>ternet just by us<strong>in</strong>g a new set-top box,” Mr Simpson said.45
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