1. Shanghai Institute of Intelligent Electronics and Systems, School of Information Science and Technology, Fudan University, Shanghai, China
2. College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China
3. State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, China
4. Key Laboratory of Silicon Device and Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing, China