1. College of Telecommunications and Information Engineering, NJUPT,Nanjing,China
2. Reading Academy, Nanjing University of Information Science and Technology,Nanjing,China
3. Nanjing Great Information Technology Co. Ltd,Nanjing,China
4. Keio University,Department of Information and Computer Science,Yokohama,Japan
5. Manchester Metropolitan University,Faculty of Science and Engineering,Manchester,United Kingdom