频谱图法

扩频通信技术教程 这是一本关于CDMA扩频技术的经典书籍，国内曾经出版过英文影印版。 【原书作者】： Marvin K. Simon, Jim K. Omura, Robert A. Scholtz, Barry K. Levitt 【ISBN 】： 0071382151 【页数 】：1248 【出版社】 ： McGraw-Hill Professional 1 edition 【出版日期】：September 26, 2001(Spread-spectrum communication technology tutorial This is a classic on the CDMA spread spectrum technology, books, photocopies of the domestic version was published in English. 】 【Original author: Marvin K. Simon, Jim K. Omura, Robert A. Scholtz, Barry K. Levitt】 【ISBN: 0071382151 【Pages】: 1248 【Press】: McGraw-Hill Professional 1 edition 【Publishing Date】: September 26, 2001)

matlab 小波分析算法之一，可以很方便的处理图像数据(matlab wavelet analysis algorithm, one can easily handle the image data)

用MatLab环境进行OFDM仿真代码，具有注释详细，非常适合初学者。(source code for OFDM ,suitable for the beginner)

Cutting and deflection in beam

lorenz系统的相图实现，参数a,b取固定值，变化c，从而观察lorenz系统解的性质的变化(lorenz phase diagram of the system implementation, parameters a, b take a fixed value, the change c, lorenz system solutions to observe the changing nature of)

这是我本科毕业设计论文《基于混沌序列的加密图像隐藏技术的设计与实现》，就是把一张图片加密后隐藏在载体图像中，可以抵御各种攻击，用到了Matlab，里面包括开题报告，论文，可执行程序。本文系统介绍了混沌加密、信息隐藏技术。归纳了混沌加密、信息隐藏的分类、特性与应用，给出了混沌加密、信息隐藏的原理和基本框架以及其性能的评价方法，介绍了几种图像的攻击方法。实现了一种混沌加密和图像隐藏的方法。使用混沌加密对待隐藏图像进行加密后嵌入载体图像中，并对嵌入待隐藏图像的载体图像进行了几种攻击以验证其鲁棒性。本系统运用MATLAB编程实现对图像的混沌加密，运用LSB算法将加密后图像嵌入载体图像中，并能承受图像剪切，图像增亮，图像变暗，增加对比度，减低对比度，添加积性噪声，添加高斯噪声，旋转45度，直方图均衡化等一定程度的毁损和各种攻击检测，仍然能解密得到原图像，原图像清晰可辨，鲁棒性非常好。总之本文较好的实现了基于混沌序列的加密图像隐藏技术。(This is my graduation design thesis Design and implementation of chaotic sequence image hiding technique based encryption is encrypted to hide the picture in the carrier image, can withstand a variety of attacks, uses Matlab, which includes opening report, thesis, an executable program. This article describes the chaos encryption system, information hiding technology. Summed up the chaos encryption, information hiding classification, characteristics and application, given the chaotic encryption, information hiding principle and basic framework and its performance uation methods, and introduces the method of attack several images. It implements a chaotic encryption and hidden image method. After using Chaotic Encryption treat hidden image encryption embedded vector images, vector images and embedded image to be concealed several attacks carried out in order to verify its robustness. This system using MATLAB programming chaotic image encryption, use LSB algorithm encrypted image is em)

一个用于自然数编码遗传算法的工具包indexGA，以及用这个工具包实现的车辆路径优化问题的算法例程(One for the natural number-coded genetic algorithm toolkit indexGA, and use this tool kit to achieve VRP algorithm routine)

脉冲编码调制（PCM）用于在数字传输媒体上传送模拟信号，在PCM中，首先对模拟信号以高于其带宽两倍的奈奎斯特率进行采样，然后对所得样本进行量化。采用不同量化级别生成的PCM编码会影响接收器重建模拟信号的质量。 (Pulse code modulation (PCM) for the media in the digital transmission of analog signal transmission in the PCM, the first analog signal to more than the Nyquist rate of twice the bandwidth sample, and then to quantify the samples. Using different quantization level generated PCM coding receiver will affect the quality of the reconstruction of analog signals.)

毕业设计。用matlab实现的frank码。(matlab implementation of frank yards.)

信号模型，可以对初学者有很大帮助。简单的运行，让你懂得搭建模型的基本原理。(The signal model, can be of great help for beginners. Simple operation, let you understand the basic principles of building model.)