ML法能够很好的估计信号的信噪比,GSM中GMSK调制信号的产生，小波包分析提取振动信号中的特征频率。- ML estimation method can be a good signal to noise ratio, GSM is GMSK modulation signal generation, Wavelet packet analysis to extract vibration signal characteristic frequency.

非归零型差分相位调制信号建模与仿真分析 ，多元数据分析的主分量分析投影，小波包分析提取振动信号中的特征频率。- NRZ type differential phase modulation signal modeling and simulation analysis, Principal component analysis of multivariate data analysis projection, Wavelet packet analysis to extract vibratio

小波包分析提取振动信号中的特征频率，调试通过可以使用，自己编的5种调制信号。- Wavelet packet analysis to extract vibration signal characteristic frequency, Debugging can be used, Own five modulation signal.