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Dr Cheng-Chew Lim
Multichannel reconfigurable digital receivers
Wireless systems will increasingly require much higher levels of performance, in the form of abilities to receive and to distinguish signals from multiple sources that are physically close together and transmit on similar frequencies.
In this project we develop a test system that will allow us to undertake research on new algorithms that will achieve these higher levels of performance. Our objective is to demonstrate dramatic improvements in the capacities of receivers for defence surveillance and future generation mobile phone systems.
We have designed for CMOS fabrication a high-precision digital down converter (DDC) chip with internal bus widths and arithmetic to allow the exploitation of spatial dynamic range enhancement. Under development is a multichannel reconfigurable high dynamic range digital receiver to be used in a remote and distributed environment.
An immediate application is for improved multichannel processing in LLISP ionosonde. The test system will be configured to analyse wideband vector signals for devising signal detection and separation algorithms in OFDM systems.
TeamDr Cheng-Chew Lim, Dr Warren Marwood (DSTO), Dr Jinho Choi (UNSW), Mr Bill Cumpston (Ebor), Mr Michael Liebelt, Mr Angus Massie (DSTO), Mr Kiet To (Research Assistant), Mr Nigel Brine (Ph.D. candidate), Mr Matthew Goss (Research Assistant), Mr Adam Burdenuik (Ph.D. candidate), Mr James Giesbrecht (Ebor), Mr Kevin Zacher (DSTO), Mr Dallas Taylor (DSTO), Mr Andrew Robb (Ebor)
SupportThe Australian Research Council Linkage-Project (2002-2004)
Ebor Computing, Australia
The Defence Science and Technology Organisation