1. Key Laboratory of Opto-Electronic Information Science and Technology of Jiangxi Province, Nanchang Hangkong University, Nanchang, China
2. Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology, School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao, China
3. Research Center for Convergence Networks and Ubiquitous Services, University of Science and Technology Beijing, Beijing, China
4. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, China
5. Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND, USA