Digital-Smith-pre-estimate-control

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)

MATLAB 编程技巧（尽量避免使用循环；大型矩阵的预先定维）(MATLAB programming skills (as far as possible avoid the use of the cycle large matrix of pre-set dimension))

一些货币政策DSGE模型用Matlab实现的程序合集(Monetary policy DSGE model using Matlab program collection)

leafrong method matlab code

IP175A circuit application

粒子群matlab程序，大家下载下来觉得好的话，一定要留言阿，包含粒子群优化，是用matlab编的。(PSO Matlab procedures, we feel good downloaded down, we must voice A, include PSO is using Matlab series.)

Numerical Maths Using Matlab matlab学习资料，英文版 基于matlab的数值方法：曲线拟合、数值优化……(Numerical Maths Using Matlab matlab learning materials, the English version is based on the numerical analysis matlab)

写一个GUI程序，能打开和保存.csv文件，能以表格的形式显示.csv的数据，并且能修改每个单元的 值。(Write a GUI program that can open and save. Csv file can be displayed in tabular form. Csv data, and can modify the value of each unit.)

设置GUI界面，计算闭合导线平差，获得平差结果并绘制图形(Set up the GUI interface, calculate the adjustment of the closed traverse, obtain the adjustment result and draw the graph)

希尔伯特黄变换，提供了EMD分解，希尔伯特包络提取，希尔伯特边际谱绘制(including EMD and envlop extraction using Hilbert and marginal spectrum)