1. School of Electronics and Information; Nantong University; Nan Tong Jiangsu Province People's Republic of China
2. Department of Electrical and Computer Engineering; National University of Singapore; Singapore
3. Department of General System Design, Nanjing Research Institute of Electronics Technology; Nanjing Jiangsu Province People's Republic of China
4. Center for Advanced Microelectronic Devices, National University of Singapore Suzhou Research Institute; Suzhou China