LDPC-encdecPAWGN

说明：  Fm 的调制和解调 可以在matlab直接运行，包含模块文件(Fm modulation and demodulation can be run in matlab directly, including the module file)

小波包能量程序，支持向量机组分类时，特征的提取，小波包能量(Wavelet packet energy program, support vector machine classification, feature extraction, wavelet packet energy)

说明：  fdtd 平面波的加入 计算建模 先上传这个，下边的以后补齐(fdtd calculation of plane-wave model to join the first upload of this, after the bottom of the padded)

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)

Double_buck_PI_Control.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(Double_buck_PI_Control.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

建立滑变结构动力学模型，进行matlab编程验证了模型的有效性。(A sliding mode dynamic model is established, and MATLAB programming is used to verify the validity of the model.)

在MATLAB中用复合辛普森公式求函数的二重数值积分。(realizing double integral by Complex Simpsons Formula in MATLAB)

SIGMA DELTA MODULATOR

ACO求解QOS路由问题。该文件完全实现了蚁群算法求解QOS路由问题，取得了不错的效果。用matlab打开该文件，将文件中的输入参数列表复制到运行窗口中，然后运行该文件即可。(ACO routing problem solving QOS. This document is the ant colony algorithm to achieve QOS routing problem, and achieved good results. Using matlab to open the file, the file copied to the run input parameters list window, then run the file.)

minutiae-based matching algorithms in fingerprint recognition systems