无线电工程2017，Vol.47Issue(2)：36-40,5.DOI:10.3969/j.issn.1003-3106.2017.02.09
一种CPM信号的符号速率估计算法
A Symbol Rate Estimation Algorithm of CPM Signals
摘要
Abstract
In non-cooperative communication,the modulation parameter estimation is the prerequisite for blind demodulation,and the symbol rate is one of the most important parameters.For continuous phase modulated signal,a precise estimatation of symbol rate is of great significance to signal blind recognition,parameter estimation and blind demodulation.Considering the problems on symbol rate estimation during parameter estimation,a new algorithm based on the instantaneous frequency spectrum is introduced in this paper.This algorithm obtains the instantaneous frequency of signal by the phase difference,performs fast Fourier transformation for instantaneous frequency to get the instantaneous spectrum and the symbol rate estimation according to instantaneous spectrum.The simulation results show that the algorithm can be implemented with small amount of data,and it has a fast recognition speed together with a good noise resistant performance.关键词
符号速率估计/盲识别/连续相位调制/瞬时频率Key words
symbol rate estimation/blind recognition/continuous phase modulation/instantaneous frequency分类
信息技术与安全科学引用本文复制引用
王秀宁,陈卫东,刘芳..一种CPM信号的符号速率估计算法[J].无线电工程,2017,47(2):36-40,5.基金项目
国家自然科学基金资助项目(81370038). （81370038）
