1. College of Communication Engineering, Jilin University, No. 5372 Nanhu Road, Changchun 130012, China
2. College of Computer Science and Engineering, Changchun University of Technology, No. 2055 Yan’an Street, Changchun 130012, China
3. College of International Education, Changchun University of Technology, No. 2055 Yan’an Street, Changchun 130012, China