Hongfang Zhou
School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an, China
Boqin Feng
School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an, China
Hui Yue
School of Electronic and Information Engineering, Xi’an Jiaotong University, Xi’an, China
L. V Lintao
School of Computer Science and Engineering, Xi’an Jiaotogn University, of Technology, Xi’an, Shaanxi, China