Lab5

GMSK调制，先实现相位的计算，再加入载波调制，输出GMSK信号(GMSK modulation, the first implementation phase of the calculation, then add carrier modulation, the output GMSK signal)

这是《Numerical Methods with MATLAB: Implementation and Application》一书的配书程序（Matlab）(matlab code for "Numerical Methods with MATLAB: Implementation and Application")

说明：  给出正弦加噪函数，通过FFT,DTFT,做频谱变化，幅度谱和相位谱。(Sine plus noise function is given by FFT, DTFT, make changes in the spectrum, amplitude spectrum and phase spectrum.)

IIR滤波器设计，包含切比雪夫，巴特沃兹，椭圆等滤波器matlab代码。可直接运行。(IIR filter design, including Chebyshev, Butterworth, oval filter matlab code. Can run.)

dear sir i have uploaded a few programs for your consideration

用经典龙格-库塔法和变步长的龙格-库塔法求解微分方程(Classical Runge- Kutta method and the variable step Runge- Kutta method for solving differential equations)

Read ECG signal from MIT-BIT for signal processing. Basically used in MATLAB and other signal processing tools.

根据水位过程线，分析全场的潮汐调和常数图，20个字(According to the water level hydrograph analysis audience tidal harmonic constants map, 20 words)

this paper is about the image watermarking using DWT+DCT+CDMA. it provides a good PSNR value then each technique seprately

利用R/S的各种修正版本计算HURST指数(Use of R/S calculation of the various amended version HURST index)