1. University of Duisburg-Essen (UDE),Institute of Digital Signal Processing (DSV),Duisburg,Germany,D-47057
2. University of Duisburg-Essen and CENIDE - Center for Nanointegration Duisburg-Essen,General and Theoretical Electrical Engineering (ATE),Duisburg,Germany,D-47048
3. Al Ain University, Campus,College of Engineering,Abu Dhabi,UAE