1. East China Research Institute of Electronic Engineering, Hefei, China
2. Electrical Engineering Department, Eindhoven University of Technology, Eindhoven, The Netherlands
3. Southwest Integrated Circuit Design Company Ltd., Chongqing, China
4. Microelectronics Department, Hefei University of Technology, Hefei, China
5. Purple Mountain Laboratories, School of Information Science and Engineering, Southeast University, Nanjing, China