1. College of Information and Communication Engineering and the Key Laboratory of Advanced Marine Communication and Information Technology, Ministry of Industry and Information Technology, Harbin Engineering University, Harbin, China
2. College of Architectural Engineering, Civil Engineering and Environment, Ningbo University, Ningbo, China
3. School of Information and Electronics, Beijing Institute of Technology, Beijing, China
4. School of Engineering and Information Technology, University of New South Wales, Canberra, ACT, Australia