1. School of Computer Science and Technology, Anhui University, Hefei, China
2. School of Microelectronics, Hefei University of Technology, Hefei, China
3. School of Integrated Circuits, Anhui Polytechnic University, Wuhu, China
4. LIRMM, University of Montpellier/CNRS, Montpellier, France
5. Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka, Japan