作者机构:[1]College of Communications Engineering, PLA Universityof Science and Technology, Nanjing 210007, China
相关基金:Acknowledgments The authors sincerely thank three anonymous reviewers for their questions about manuscript of this article. These questions inspired us to understand more clearly and deeply the semantic cognition process and its special meanings in cognitive radio. This work was supported by the National Basic Research Program of China (2009CB320400), the National Natural Science Foundation of China (60932002 and 61172062), and the Natural Science Foundation of Jiangsu, China (BK2011116).