作者机构:[1]Dept. of Computer Science and Eng. , Shanghai Jiaotong Univ. , Shanghai 200240, China, [2]Dept. of Communication Eng. , Eng. College of Armed Police Force, Xi'an 710086, China
相关基金:The National Natural Science Foundation of China (No. 60703031 ) ; The Natural Science Foundation of Shaanxi Province ( No. 2007F50)