Matlab code for LMS algorithm

这是用C语言编写的灰度直方图，在matlab软件下可以运行。不是用imhist直接调用。(It is written in C language histogram in matlab software can run. Not called directly by imhist.)

求一个信号的频谱分布，并求某一帧的频谱图。(Seeking a signal of the spectrum distribution, and the frequency spectrum diagram of the requirements of a certain frame.)

数据包络法，层次分析法的结合，用于方案评估(Combination of data envelopment analysis and analytic hierarchy process for program evaluation)

说明：  1、以不同的视角观察球面 和圆柱面 所围区域。2、画出s(t)=cos(2/3πf0t)的曲线及其付氏变换的曲线.设:f0=1KHz,时域分辨率 dt=0.01ms, 采样点数 N=2k, k>10.（均为M文件）(One to observe the different angles of spherical and cylindrical surface region by Wai. 2, draw s (t) = cos (2/3πf0t) curve and its Fourier transform curve. Established: f0 = 1KHz, time-domain resolution of dt = 0.01ms, sampling points N = 2k, k)

闭环伺服系统传递函数和数学模型的研究，做电机伺服的可以看看 (closed-loop servo system transfer function and the mathematical model studies, servo motor can see)

matlab scfde source code

基于matlab实现人脸识别的稀疏表示SRC算法(Implementation of sparse representation SRC algorithm)

在共梯度法中 只有当初值的选取靠近最优解时 迭代才会收敛 当远离时发散 且 当精度控制为0.1时可以实现 但设为0.01时就实现不了(numeberica method)

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)

UWB时域波形描述与仿真，满足FCC组织规定的室内UWB系统(UWB time-domain waveform description and simulation, to meet the FCC requirements for indoor UWB systems organization)