FIR 底通和带通滤波器和IIR 底通和带通滤波器，对于初学matlab的同学会有帮助，GSM中GMSK调制信号的产生，含噪脉冲信号进行相关检测,借鉴了主成分分析算法（PCA），Relief计算分类权重，使用混沌与分形分析的例程。- Bottom-pass and band-pass FIR and IIR filter bottom pass and band-pass filter, Matlab for beginner students will help, GSM is GMSK modulation signal generation, Noisy pulse correlation detection signal, It draws on principal component analysis algorithm (PCA), Relief computing classification weight, Use Chaos and fractal analysis routines.