1. Department of Mathematical Sciences, Delaware State University, Dover, DE 19901-2277, USA
2. Department of Engineering Sciences, Faculty of Technology and Engineering, East of Guilan, University of Guilan, P.C. 44891-63157, Rudsar-Vajargah, Iran
3. Faculty of Electronic Engineering, Department of Telecommunications, University of Nis, Aleksandra Medvedeva 14, 18000 Niš, Serbia
4. School of Electronics and Information Engineering, Wuhan Donghu University, Wuhan-430212, People’s Republic of China
5. Department of Physics and Engineering, Delaware State University, Dover, DE 19901-2277, USA
6. Science Program, Texas A&M University at Qatar, P.O. Box 23874, Doha, Qatar