包括邓氏关联度、绝对关联度、斜率关联度、改进绝对关联度,对信号进行频谱分析及滤波，GSM中GMSK调制信号的产生。- Including Deng s correlation, absolute correlation, correlation of slope, improved absolute correlation, The signal spectral analysis and filtering, GSM is GMSK modulation signal generation.