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本设计通过利用VB 编写用户操作界面和MATLAB 实现后台运算及图形处理的混合编 程的方法，来完成对通信原理仿真系统的开发。设计中采用ActiveX 技术来实现VB 和MATLAB 之间的通信，在VB 应用程序内创建MATLAB ActiveX 对象，实现对MATLAB 的调用，最终 仿真实现信源编码解码、模拟调制解调、数字基带传输、数字调制解调等功能。(This design user interface written using VB and MATLAB computing and graphics processing to achieve the background of mixed programming method, to complete the simulation system for the development of communication theory. Design using ActiveX technology to achieve communication between VB and MATLAB, the VB application, create a MATLAB ActiveX object, call the MATLAB implementation, to achieve the ultimate source codec simulation, analog modem, digital baseband transmission, digital modulation and demodulation functions.)

HHT 改进算法，文章中给出了详细的步骤和实现方法，对信号处理专业的有很大帮助(Improved algorithm of HHT, this paper presents the detailed steps and methods of signal processing, professional help)

用matlab仿真随机信号白噪声，频谱分析，很好用(Matlab simulation of random signal with white noise)

document on fiber optic technology

Solving using an efficient algorithm for tridiagonal matrices TDMA Reynolds equation is solved fast and simple.

matlab做的图像检索源码，算法实现不错，很有借鉴作用，对初学者更是适用。(matlab source code to do image retrieval algorithm to achieve good, very useful reference for beginners it is applicable.)

说明：  基于Harris的掌纹图像特征提取的程序，非常的完整可靠(Harris based on palmprint image feature extraction procedures, very full and reliable)

The following function, defined in load_images.m, is an example of how to read a bunch of images, make column vectors out of each of them, and return the result.

说明：  开源计算机视觉目标识别代码，里面的内容非常详细，而且注释很清晰(a very famous open source computer vision code for object recognition)

simulation of the effect of a filter on a signal, showing amplitude and phase spectra, in three cases, varying its bandwidth