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数字通信原理基于matlab仿真计算，采用matlab语言仿真通信原理基础内容：包括随机信号、调制解调、信源信道编码和滤波器等相关通信系统的仿真实现，建议具有matlab使用能力的人使用，对于加深自己对通信原理理论知识的理解很有帮助(Digital Communications Principles Matlab-Based Simulation Approach)

FIR滤波器中汉宁窗和布莱克曼窗幅频特性曲线和相频特性曲线对比(FIR filter Hanning window and Blackman window of amplitude-frequency curve and phase frequency response curve compared)

快速傅里叶变换的子程序，直接在主函数中调用即可直接绘制信号的频谱图。(The subroutine of the fast Fourier transform can directly draw the spectrum of the signal by calling it directly in the main function.)

MATLAB中单位阶跃信号和单位阶跃序列的产生程序(MATLAB in the unit step signal and the unit step sequence generation program)

说明：  MATLAB命令大全 MATLAB help 的中文(MATLAB command Daquan MATLAB help the Chinese)

说明：  基于信息融合的图像边缘检测方法研究,⑴直方图均衡化（histogram equalization），⑵直方图匹配（histogram matching），⑶邻域平均（neighborhood averaging），⑷局域增强（local enhancement）， ⑸中值滤波（median filtering）。(Edge detection method, 1 histogram equalization (histogram equalization). 2 histogram matching (histogram matching). 3 Neighborhood average (neighborhood averaging) 4 Local Enhancement (local enhancement). together median filter (median filtering).)

一个时滞微分方程的例子及matlab程序代码(These are some delay differential equations matlab code.)

说明：  采用双闭环控制pwm的直流电机，输入为直流电压，反馈环节采用速度环和电流环(The DC motor adopts double closed-loop control PWM, the input is DC voltage, and the feedback link adopts speed loop and current loop)

短时傅立叶变换，确定时变信号其局部区域正弦波的频率与相位(short-time Fourier transform)

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