针对EMD方法的不足,重要参数的提取，对于初学matlab的同学会有帮助，GSM中GMSK调制信号的产生，可以得到很精确的幅值、频率、相位估计，对信号进行频谱分析及滤波。- For lack of EMD, Extract important parameters, Matlab for beginner students will help, GSM is GMSK modulation signal generation, You can get a very accurate amplitude, frequency, phase estimation, The signal spectral analysis and filtering.