1. The 30th Research Institute of China Electronics Technology Group Corporation, Chuangye Road, Chengdu 610093, China
2. Unit 95835 of PLA, Urumqi 841700, China
3. Wuhan Maritime Communication Research Institute, Canglong Avenue, Wuhan 430205, China
4. College of Computer, National University of Defense Technology, Deya Road, Changsha 410003, China
5. Northwest Institute of Mechanical and Electrical Engineering, Biyuan East Road, Xianyang 712000, China