1. Center for Discrete Mathematics and Theoretical Computer Science, Fuzhou University,Fuzhou,China,350108
2. School of Electronic Science and Engineering, Southeast University,National ASIC System Engineering Center,Nanjing,China,210096
3. Fudan University,State Key Lab of ASIC & System,Shanghai,China,200433
4. Graduate Institute of Electronics Engineering, National Taiwan University,Taipei,Taiwan,10617