1. Institute of VLSI Design, Zhejiang University, Hangzhou, China
2. Department of Electrical and Electronic Engineering, School of Advanced Technology, Xi'an Jiaotong-Liverpool University, Suzhou, China
3. Department of Electrical and Computer Engineering, University of California at Davis, Davis, CA, USA
4. Ocean College, Institute of Marine Electronics and Intelligent Systems, Zhejiang University, Zhoushan, China
5. College of Microelectronics, Zhejiang University, Hangzhou, China