vod

利用LSB算法去实现了电子水印技术。代码完全实现了嵌入以及提取， 算法同时包含了4种攻击算法以及利用psnr测量提取的水印和攻击后提取的水印(This algorithm describes digital watermark technique by using LSB. This code implement embedding and extraction. At the meanwhile, this algorithm includes 4 different kinds of attacks and in the end, measure psnr between extracted watermark and attacked extracted watermark)

MATLAB函数参考 MATLAB函数参考 MATLAB函数参考(MATLAB function index MATLAB function index.doc MATLAB function index.doc)

说明：  根据传输频率、天线高度、距离等因素，仿真在多种场景下的大尺度衰落模型(According to transmission frequency, antenna height, distance and other factors, the simulation in a variety of scenarios of large-scale fading model)

matlab工具箱，SVM。。。支持向量基(matlab toolbox, SVM. . . Support vector-based)

说明：  恒模信号估计。估计载波的频率和振幅。估计恒模信号的相位和振幅(Constant modulus signal estimation. Estimated carrier frequency and amplitude. Estimated constant modulus signal phase and amplitude)

it is about matlab file for 1 story building

《MATLAB 程序设计与实例应用》，一本matlab编程的书籍，比较适合于初学者学习( MATLAB Program Design and examples of application, a matlab programming books, suitable for beginners to learn)

本论文首先介绍了当前深空通信的编码调制技术的现状与发展，阐述了以往 的深空通信中的编码和调制技术的方案和局限性，提出LDPC码和FQPSK调制的 优越性和发展前景。第二章描绘了LDPC码的奇偶校验矩阵的图形表示、生成方 式和译码方法，并比较二元LDPC码和多元LDPC码的优越性和实现问题。第三 章在介绍FQPSK调制的方案的由来、改进和发展的基础上，对其进行了功率谱分 析，介绍了一些常规的解调方案。(This paper introduces the current situation and development of the technology of deep-space communication code modulation on the coding and modulation techniques in deep space communications program and limitations of the proposed of LDPC codes FQPSK modulation superiority and development prospects. Chapter II depicts a graphical representation of the LDPC code of the parity check matrix generation method and decoding method, and compare the superiority of binary LDPC codes and multiple LDPC code and implementation problems. Chapter origin in the introduction FQPSK modulation program, improvement and development on the basis of its power spectrum analysis, conventional demodulation.)

结构力学连续梁计算GUI，需要用matlab guide程序打开(The Structural Mechanics continuous beam calculated GUI)

这是一个在matlab下模拟ask 和 bpsk调制和解调的代码(this is a file wirtten by Matlab, to explain the ASK and BPSK in a correctly way )