1. Department of Electric and Computer Engineering, Laval University, Quebec City, Canada
2. School of Physics and Electronic Information Engineering, Henan Polytechnic University, Jiaozuo, China
3. School of Information Engineering, Zhengzhou University, Zhengzhou, China
4. School of Computer Science and Statistics, Trinity College Dublin, Dublin, Ireland
5. Faculty of Engineering and Applied Science, Memorial University, St. John’s, Canada