3Tian Fang 1 , Feng Zhiyong 1 , Chen Xing 2 (1 . Beijing University of Posts and Telecommunications , Beijing 100876 , P . R . China ,2 . Research Institution of China Mobile Communications Corporation , Beijing 100053 , P . R . China ).Spectrum Occupancy Measurement and Analysis[J].ZTE Communications,2009,7(2):16-20. 被引量:1