CSIRO's 12Gbps wireless network perfect for OPEL

May solve the battle for spectrum between industry and defence

Australian businesses and rural communities could be linked via 6Gbps wireless networks by 2009.

Speaking at the IDC technologies Industrial Wireless and Ethernet Conference in Sydney, CSIRO ICT centre wireless technologies laboratory director Dr Y Jay Guo announced the development of wireless technology which can deliver up to 12Gbps over a range of more than eight kilometres.

Dr Guo said the technology operates within the 81 to 86GHz spectrum band and would be perfect for the federal government's OPEL regional WIMax network.

"We have already established working 6Gbps connections with minimal error even on basic equipment," Guo said.

"The attenuation drops considerably after 60GHz and the 80GHz band has attained excellent penetration through poor weather conditions

"High gain antennas will increase the transmission range and meshed gigabyte networks can be deployed in densely populated environments."

The point-to-point wireless network operates in millimeter wave frequencies to avoid oxygen absorption, which can cut down network range by 50 percent.

The 80Ghz band squeezes in more users than lower frequencies due to its high spectrum reuse and highly accurate directive antennas which can be located more closely than non-directive receptors.

Guo said the CSIRO is developing technology to double the network's bandwidth to 12Gbpswhich he said should be used to complement a national terabyte fibre backbone.

He said the gigabyte technology is the solution for backhaul problems and is working with local and international researchers and industry to design millimetre-wave wideband networks for communication between ground, air and sea operations.

Mobile operators migrating to 3.5G will adopt the technology for wireless backhaul according to Guo. He expects industry to demand wireless backhaul fatter than 10Gbps as 4G technology is developed.

He said gigabit wireless networks are the solution for the troubled last-mile access for Fibre-to-the-Node (FttN) infrastructure.

But new parallel signal processing architectures will need to be developed as current analogue and digital converters are inoperable with wireless gigabit networks.

The price of high power sources such as Klystrons used to boost transmission range will have to fall for the technology to achieve mass adoption.

According to Guo sufficient power can be delivered through amplified active transmit antenna arrays, but it carries complex design architectures that must be perfected for the technology to work.

The CSIRO also designed an indoor Wireless Personal Area Network (WPAN) that operates in the 60GHz band to deliver speeds of more than 6Gbps with minimal interference to other devices.

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