leijiliang

循环冗余校验CRC (Cyclic Redundancy Check)码是由分组线性码的分支而来，其主要应用是二元码字。编码简单且误判概率很低，在通信系统中得到了广泛的应用。循环冗余校验码是属于分组码中的一类重要的线性码，它不仅在理论上具有很好的代数结构，而且其编码和译码可以通过线性移位寄存器很容易地实现。 通过对CRC的分析和基于MATLAB工具的仿真，充分证明了CRC的检错能力很强，编码简单。 (Cyclic Redundancy Check CRC (Cyclic Redundancy Check) code is a linear code from the sub-branch from the main application is the binary code word. Coding is simple and very low probability of miscarriage of justice, in the communication system has been widely used. Cyclic redundancy check code is a block code in one important class of linear code, which not only has good in theory, algebraic structure, and its encoding and decoding of linear shift register can easily realize . CRC through analysis and simulation tool based on MATLAB, and fully proves that the CRC error detection ability of a strong, simple coding.)

生成PSK信号。并基于NI的软件无线电平台发送射频信号(PSK signal is generated. And software radio platform based on NI RF signal sent)

说明：  qQq QqQ qQ

数字图象处理系统，使用MATLAB的GUI模块，可实现图象的直方图均衡、灰度化、二值化、缩放、边缘检测、增加噪声、图像变换、去噪等功能。使用时请将fig文件和m文件和图像放在一个文件夹内(photo process system,use matlab)

编程工具Visualstudio快捷键大全，平时常用的快捷键，方便使用。(The programming tool Visualstudio shortcuts, usually the common shortcut keys, easy to use.)

函数功能:本函数将完成随机选择LSB的信息隐藏,载体选用BMP图，和提取隐秘与LSB上的秘密消息(Function: This function will be completed randomly selected LSB information hiding a secret message on the carrier selected BMP map, and extract hidden LSB)

无线通信系统的调度算法仿真程序，可以参考说明文件进行学习(Wireless communication system simulation program scheduling algorithm, can refer to the documentation to learn)

说明：  地震下结构碰撞问题，结构模态分析与虚拟激励法程序(Seismic structure of the collision problem, structure modal analysis procedure with the virtual excitation method)

本文使用三维FDTD算法实现文献《Application of the three_Dimensional Method to the analysis if Planar Microtrip Circuits》IEEE trans. On MTT 1990 38(7)的一个矩形微带贴片天线的S11参数的计算。采用MATLAB编程完成数值计算，并与文中的结果进行了比较。(This three-dimensional FDTD algorithm using the document " Application of the three_Dimensional Method to the analysis if Planar Microtrip Circuits" IEEE trans. On MTT 1990 38 (7) of a rectangular microstrip patch antenna of the S11 parameter of the calculation. Complete the numerical calculation using MATLAB programming, and with the text of the results were compared.)

经典的最小互信息量ICA算法，Informax算法，值得下载(Minimum Mutual Information ICA algorithm, it is worth the download. .)