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matlab下实现降噪，功率谱计算。％程序中设定采样点数为256个，采样频率为10000hz， ％输入信号为随机噪声和两个正弦的合成信号 ％设定的滤波器的截止频率为3500hz ％通过挈比雪肤滤波器，运行程序，比较滤波前后的频域波形 ％滤波去除了高频信号(matlab achieve noise reduction, power spectrum calculation. Sampling procedure set for 256 points, the sampling frequency of 10000hz, input signal for the random noise and the two sinusoidal signals synthetic filter set a cut-off frequency 3500hz manner than through the filter雪肤, run procedures, compared before and after filtering in frequency domain waveforms filtering in addition to high-frequency signals)

Matlab code for FFT with two cos functions

segmentation tools for segmention lazy snaping

OFDM系统完美仿真绝对可用包含星座图，时域频域仿真及传输函数(OFDM system is absolutely perfect simulation can include constellation, time domain simulation and frequency domain transfer function)

MATLAB程序，用以实现2FSK数字信号的产生(MATLAB program to achieve generation of 2FSK digital signal)

说明：  光纤基模和第一高阶模特征方程求解 非线性方程求解(Solve the characteristic equation of the Fiber fundamental mode and the first high order model and the nonlinear equation solving)

matlab经典课堂讲义,ppt形式，适合初学者入门的东西。(Classic matlab lecture notes, ppt form, suitable for beginner stuff.)

以rungekutta解ode，根據張鵬永老師的教法(Rungekutta solution to ode, according to Zhang Pengyong teachers teaching)

基于matlab的十四个节点的潮流程序，主要用于电力系统(Matlab based on the trend of the fourteen nodes procedures, mainly for power system)

基于MUSIC方法功率谱估计的matlab仿真(MUSIC-based method of power spectrum estimation matlab simulation)