1. School of Microelectronic, Xidian University, Xi’an 710071, China
2. School of Computer Science, Xi’an Shiyou University, Xi’an 710071, China
3. School of Microelectronics, Northwestern Polytechnical University, No. 127 West Youyi Road, Xi’an 710072, China
4. Guangzhou Quanshengwei Information Technology Co., Ltd., No. 18 Kexue Avenue, Huangpu District, Guangzhou 510700, China