Currently, he is a Professor at the Department of Electrical and Computer Engineering, University of Toronto, Canada. He has served as Chair of the Communications Group over the period July 1999 to June 2004. Since November 2004 , he is the holder of the Bell Canada Chair in Multimedia.

His research interests are in the areas of digital communications and signal processing with applications to wireless communications, image processing and multimedia. He has organized and taught many short courses on modern signal processing frameworks and applications devoted to continuing engineering education and given numerous seminars in the area of blind signal deconvolution. He is author/co-author of more than 150 papers in technical journals and conference proceedings and he has contributed to 7 books in his areas of interest. His experience includes consulting through Electrical Engineering Consociates Ltd. and contracts with United Signals and Systems Inc., Burns and Fry Ltd., Pipetronix Ltd., Defense Research Establishment Ottawa (DREO), Vaytek Inc., Nortel Networks,and Vivosonic Inc. He is a member of the Board of Directors of CANAMET, Inc. (Canadian National Medical Technologies). He has served as an Associate Editor for the IEEE Transactions on Signal Processing from 1998 till 2002 and Guest Editor for the special issue of Signal Processing, Elsevier, on Signal Processing Technologies for Short Burst Wireless Communications which appeared in October 2000. He was a member of the IEEE Statistical Signal and Array Processing Technical Committee (SSAP) from 1992 till 1995 and Technical Program co-Chair of the 5th Workshop on Higher-Order Statistics in July 1997. He is co-organizer and Technical program co-Chair of the IEEE Toronto Centenial Workshop on Wireless Communications to be held in Toronto in September 2003. He is a senior member of the IEEE and member of EURASIP, the Professional Engineers of Ontario (PEO), and the Technical Chamber of Greece.