1. Department of Electrical and Computer Engineering, COMSATS University Islamabad, Wah Campus, Wah Cantt, Pakistan
2. Department of Computer and Systems, Faculty of Engineering, Mansoura University, Mansoura, Egypt
3. Department of Information and Communication Engineering, Inha University, Incheon, South Korea
4. Department of Computer Science, University of Huddersfield, Huddersfield, U.K.