1. Department of Telecommunication Engineering, University Politehnica of Bucharest, 077042 Bucharest, Romania
2. Department of Computer Engineering, Al-Rafidain University College, Baghdad 46036, Iraq
3. Department of Communication Technical Engineering, Al-Farahidi University College, Baghdad 00965, Iraq
4. Department of Director for Management of Scientific Research, University Politehnica of Bucharest, 060042 Bucharest, Romania