Professor, Computer Science Department, Stony Brook University

Regents Professor of Electrical and Computer Engineering, University of Arizona

Professor of Electrical and Computer Engineering, The Ohio State University

Retired Full Professor, Karlsruhe Institute of Technology, Communications Engineering Lab

Stevens Institute of Technology

Research Fellow, CTVR, University of Dublin, Trinity College

University of York

Professor of Electrical and Computer Engineering, Worcester Polytechnic Institute

Professor of Electrical Engineering, Air University, Islamabad

US Naval Research Laboratory