spread-spectrum

利用matlab设计滤波器，有原理说明及其matlab的代码实现(A filter was designed using matlab, there are principles of note and its matlab code to achieve the)

通信的数字化是它能与计算机技术和数字信号处理技术相结合的基础，而实现通信数字化的前提是信源能提供的各种用于传递的消息，例如语音、图像、数据、文字等都必须以数字化形式表示。而信源编码是数字通信系统中的重要组成部分，他是保证信号有效传输的一种重要方式。霍夫曼编码依据字符出现的概率来构造异字头的平均长度最短的码字，有时称之为最佳编码，其优越的性能被广泛使用在数字通信系统中。霍夫曼编码已经成为数据压缩的灵魂算法。本文介绍了无失真编码算法的构造，霍夫曼编码的规则和特点，同时分析了对信源进行优化的方法，最后通过MATLAB仿真来讨论比较二元霍夫曼编码、三元霍夫曼编码以及信源扩展编码的效率，来实现霍夫曼码的优化构造。(The digital communication is it can and computer technology and digital signal processing technology in combination of the base, and realize the digital communication is the premise of source can provide all kinds of used to deliver news, such as voice, video and data and text must take the digital form said. And the source coding digital communication system is the important component, he is to ensure the effective transmission signal is an important way. Huffman coding based on the probability of characters appear to construct different "the average length of the shortest code words, sometimes called the best coding, superior performance is widely used in digital communication system. Huffman coding has become the soul of data compression algorithm. This paper introduces the structure of the encoding algorithm without distortion, Huffman coding rules and characteristics, and analysis of the source of the optimization method, and finally by MATLAB simulation to discuss compares two yu)

MicroWind第2代，著名的微电子开发软件的教学版，适用于一般教学和入门级使用(MicroWind second generation, the famous microelectronics development of teaching software version applies to general teaching and the use of entry-level)

说明：  非纹理的曲率驱动扩散的图像修复。参考文献：《Nontexture Inpainting by Curvature-Driven Diffusion》(Curvature-driven diffusion of non-texture image restoration. References: &quot CHAN Nontexture Inpainting by Curvature-Driven Diffusion&quot )

说明：  2011数学建模a题，运用地理统计学内梅洛指数法，和综合指数法，简单实用(2011 Mathematical modeling of a problem, the use of geographic statistical Neimei Luo index method, and the composite index method, simple and practical)

最大熵复原算法,用来处理图形复原重构，以及重建(Maximum entropy restoration algorithm)

codinf for Function finds the inverse kinematics

雨流计数程序,记录下幅值和均值序列，多遍扫描；应力应变迟滞三点法。(raindrop counting method)

this simulink model shows the linear voltage regulator in the closed loop and plot the charateristic plot of the same Matlab simulink model

人脸识别算法matlab代码，可以实现，如PCA,ICA，SVM,LDA等(Matlab code for face recognition algorithms can be achieved, such as PCA, ICA, the SVM, LDA)