1. School of Electrical Engineering and Computer Science (SEECS) & National University of Sciences and Technology (NUST), Islamabad, 44000 Pakistan
2. Electrical Engineering Department, the City College of New York, the City University of New York, New York, NY 10031, USA
3. Department of Information System, Faculty of Computer Science & Information Technology, University of Malaya, Malaysia
4. School of Computer Science, University of Birmingham, Dubai, 341799 United Arab Emirates