frft

边缘是图像最基本的特征，是图像分割的第一步。经典的边缘检测方法如：Roberts，Sobel，Prewitt，Kirsch，Laplace等方法，基本都是对原始图像中象素的小邻域构造边缘检测算子，进行一阶微分或二阶微分运算，求得梯度最大值或二阶导数的过零点，最后选取适当的阀值提取边界。由于这些算法涉及梯度的运算，因此均存在对噪声敏感、计算量大等缺点。在实践中，发现SUSAN算法只基于对周边象素的灰度比较，完全不涉及梯度的运算，因此其抗噪声能力很强，运算量也比较小。并将SUSAN算法用于多类图像的边缘检测中，实验证明该算法非常适合含噪图像的边缘检测。 2 SUSAN边缘检测简介 (err)

svm在matlab中的应用的一些程序以及说明(svm application in matlab some of the procedures)

RS纠错matlab源程序(保证正确，网站上现在错的源码很多).可方便地向C语言移植。内附几本RS纠错相关书籍，是rs入门级和提高的必备读物。有的尽管在其他地方也能找到，这几本，我为他们添加了书签，方便阅读。(RS error correction matlab source (to ensure correct and the source website is now a lot of mistakes). Can be easily transplanted to the C language. RS error correction included several books, is the entry-level and increase rs essential reading. Although some can be found in other places, which several, I added a bookmark them for easy reading.)

双向无线中继信道中，两个源端交换数据，不进行信道编码，直接调制发送至中继，进行直接网络编码再广播至源端(The two-way wireless relay channel, the two source ends to exchange data, does not perform channel coding, directly modulated broadcast to the source side is sent to the relay, the direct network coding)

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)

tone reservation for papr reduction

This MATLAB GUI, used for image processing, in MATLAB. This contains source code for brightess, contrast

优化问题是工业设计中经常遇到的问题,许多问题最后都可以归结为优化问题. 为了解决各种各样的优化问题,人们提出了许多优化算法,比较著名的有爬山法、遗传算法神经网络算法等. (Optimization problem is often encountered in industrial design, many problems can be attributed to the last optimization problem in order to solve a variety of optimization problems, many optimization algorithms have been proposed, relatively well-known climbing method, genetic algorithm neural network algorithm.)

基于铌酸锂MZ调制器，通过展开，计算其三阶互调失真以及SFDR等(Based on lithium niobate MZ modulator, by expanding to calculate the third-order intermodulation distortion and SFDR etc.)

SPIHT的一个Matlab程序，经过改进的。2006年编写的。(SPIHT, a Matlab procedure improved. Prepared in 2006.)