1. Tahri Mohammed University of Bechar,Laboratory of Information Processing and Telecommunications (LTIT),Bechar,Algeria
2. University of Tlemcen,STIC Laboratory, Faculty of Technology,Department of Telecommunication,Tlemcen,Algeria
3. University of Lahore (UoL),Department of Computer Science and Information Technology,Lahore,Pakistan
4. Universidad Carlos III de Madrid (UC3M),Department of Signal Theory and Communications,Madrid,Spain