%0 Journal Article
%T Study on fractal features of modulated radio signal<br>调制无线电信号的分形特征研究
%A Tang Zhi-Ling
%A Yang Xiao-Niu
%A Li Jian-Dong
%A <br>唐智灵
%A 杨小牛
%A 李建东
%J 物理学报
%D 2011
%I 
%X The shape of radio signals determined by modulation system and that produced by the nonlinear transform are different in kind, which is the basis for discriminating them. Feature extraction based on fractal theory is a new method. In this paper,the features of modulation and nonlinear transform are projected to fractal feature space by computing the variance fractal dimension and the Mandelbrot singularity spectra dimensions. The numerical result show that differences in fractal features do exist between different modulated signals and the nonlinear transformed signals. The results show that the feature of these signals can be extracted based on fractal theory, which has engineering value for the identification of modulated radio signals.
%K radio
%K signal
%K fractal feature
%K discrimination<br>无线电
%K 信号
%K 分形特征
%K 识别
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=0E0D16C392E579C5F592C369ADBEE857&yid=9377ED8094509821&vid=BFE7933E5EEA150D&iid=94C357A881DFC066&sid=88336A154EDAFB90&eid=CF0706A3E35031F6&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=17