1. Department of Electronic and Electrical Engineering, University College London, London WC1E 7JE, UK
2. Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow G1 1XW, UK
3. SELEX Galileo, Basildon SS14 3EL, UK
4. Institute for Infocomm Research, A*STAR, Singapore
5. Strategic Research Centre, Rolls-Royce plc, P.O. Box 31, Derby DE24 8BJ, UK
6. Advanced Technology Centre, Rolls-Royce Singapore Pte Ltd., 16 International Business Park, No. 03-01 M+W Zander, Singapore, 609929