1. School of Electronic and Information Engineering, Jiangxi Institute of Economic Administrators, Nanchang, China
2. Department of Information Engineering, Gongqing Institute of Science and Technology, Jiujiang, China
3. Zhuhai Unitech Power Technology Company Ltd., Zhuhai, China
4. Industrial Center, Shenzhen Polytechnic, Shenzhen, China
5. School of Information Engineering, Nanchang University, Nanchang, China