1. Faculty of Advance Science and Technology, The University of Danang–University of Science and Technology, Da Nang, Vietnam
2. Department of Electronic and Telecommunication Engineering, The University of Danang–University of Science and Technology, Da Nang, Vietnam
3. LEAT, CNRS, Universite Cote d’Azur, Sophia Antipolis, France
4. Department of Computer Science and Information Engineering, National Cheng Kung University, Tainan, Taiwan