1. School of Microelectronics, Tianjin University,Tianjin,China,300072
2. School of Mathematics, Harbin Institute of Technology,Harbin,China,150001
3. School of Electronic Information and Artificial Intelligence, Shaanxi University of Sci& Tec,Xi'an,China,710016
4. Beijing University of Technology,Faculty of Information Technology,Beijing,China,100124
5. Carleton University,Department of Electronics,Ottawa,ON,Canada,K1S 5B6