作者机构:[1]Institute of Communication Engineering, PLA University of Science and Technology, Nanjing 210007 Jiangsu, China, [2]Institute of Science, PLA University of Science and Technology, Nanjing 211101 Jiangsu, China
相关基金:Sponsored by the National Natural Science Foundation of China (60672080) and National 863 High Technology Project (2008AA01Z216)