1. School of Computer Science and Engineering, Macau University of Science and Technology, Macau, China
2. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing, China
3. Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin, China
4. Laboratory of BLOS Reliable Information Transmission, Chongqing University of Posts and Telecommunications, Chongqing, China