1. Key Laboratory of Optoelectronics and Telecommunication of Jiangxi Province, Department of Photoelectric Information Science and Engineering, Jiangxi Normal University, Nanchang 330022, China
2. School of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha 410114, China
3. School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China