1984 - 1986 : Ph.D. in Electrical Engineering, University of Southern California
	1982 - 1983 : M.Sc. in Electrical Engineering , University of Southern California
	1984 - 1986 : M.Sc. in Mathematics, University of Southern California
	1976 - 1981 : 5-year Diploma in EE, Ntl. Tech. Univ. of Athens, Greece

	2001 - Pres.: ADC Endowed Chair Professor, Dept. of ECE, University of Minnesota
	1999 - 2001: Professor, Dept. of ECE, University of Minnesota
	1998 - 1999 : Director, Comm., Controls, & Signal Proc. Lab,, Univ. of Virginia
	1997 - 1999 : Professor, , Dept. of EE , , Univ. of Virginia
	1992 - 1996 : Associate Prof., Dept. of EE, Univ. of Virginia.
	1987 - 1991 : Assistant Prof., Dept. of EE (Communications Lab.), Univ. of Virginia.
	1986 - 1987 : Instructor/Research Assoc. , EE-Systems Dept., Univ. of South. Cal.
	1982 - 1986 : Research Assistant , EE-Systems Department, Univ. of South. Cal.
	1982 - 1985 : Teaching Assistant /Grader, EE-Systems Dept., Univ. of South. Cal.
	1981 - 1982 : Instructor for a private educational center, Athens, Greece.