1. School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, China
2. Ruijie Networks Company, Ltd, Chengdu, China
3. Aerospace New Generation Communications Company, Ltd., Chongqing, China
4. Chongqing Key Laboratory of Optoelectronic Information Sensing and Transmission Technology, Postdoctoral Research Center, Chongqing University of Posts and Telecommunications, Chongqing, China
5. Department of Computer Science, City University of Hong Kong, Hong Kong