1. Electrical Engineering Department, School of Electrical Engineering and Information Technology, German Jordanian University, Amman, Jordan
2. ENSIAS, Mohammed V University in Rabat, Rabat, Morocco
3. Electrical Engineering Department, University of Tabuk, Tabuk, Saudi Arabia
4. Instituto de Telecomunicações and the Departamento de Eletrónica, Telecomunicações e Informática, Universidade de Aveiro, Campus Universitário de Santiago, Aveiro, Portugal