1. Department of Electronics, COMSIP Laboratory, Quaid-i-Azam University, Islamabad, Pakistan
2. Department of Computer Engineering, College of Computer and Information Sciences, King Saud University, Riyadh, Saudi Arabia
3. School of Computer Science and Engineering, The University of Aizu, Aizuwakamatsu, Japan
4. Department of Electronics, University of Peshawar, Peshawar, Pakistan