作者机构:[1]lnstitute of Communications Engineering, PLA University ofScience and Technology Nanjing 210007, China, [2]Institute ofChina Electronic System Engineering Corporation, Beijing 100141, China
相关基金:This work was supported by the National Basic Research Program of China (2009CB320403), the National Natural Science Foundation of China (60832006, 60832008), and the National Science and Technology Major Project ot China ( 2009ZX03007-004).