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coxqian
水印嵌入 扩频算法 使用了空域算法 实现水印嵌入(Watermark embedding algorithm uses the spatial spread spectrum watermark embedding algorithm)
- 2010-10-17 20:25:41下载
- 积分：1
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isoparametricelement
本程序采用8结点四边形单元，分析固定位移边界条件的弹性力学平面问题(This procedure using 8-node quadrilateral element, analysis of fixed displacement boundary conditions of the plane problem in elasticity)
- 2008-04-18 10:04:08下载
- 积分：1
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OFDM
Just have a look at it for OFDM....nice code
- 2009-11-21 15:50:19下载
- 积分：1
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code
水平竖直线交点就是输入些水平线段和竖直线段的坐标（文件输入）
然后输出几个交点(The level of vertical lines is the intersection of some level of input the coordinates of line segments and vertical segments (file type) and then the output of several intersection)
- 2010-01-24 23:29:33下载
- 积分：1
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linefit
非常好用和实用的直线拟合MATLAB小程序。(Very easy to use and practical linear fitting MATLAB applet.)
- 2013-12-16 09:29:42下载
- 积分：1
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shichuanfa
石川法计算齿轮的啮合刚度，用matlab编程来实现的m文件(Ishikawa method to calculate the gear meshing stiffness, m file matlab programming to achieve)
- 2020-07-03 11:40:02下载
- 积分：1
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OFDM rece matlab
接收端采用的算法和程序流程与发送端发送的OFDM符号的帧结构有关系。具体的帧结构，以及定时估计，频偏估计，剩余误差跟踪的算法可参考算法说明文档。这里对程序的流程进行说明。
首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。
(The receiving end uses the algorithm and the program flow and the frame structure of the OFDM symbol transmitted by the sending end. Specific frame structure, and timing estimation, frequency offset estimation, residual error tracking algorithm can refer to the documentation. Here to illustrate the process of the program.
First, according to the characteristics of the short training word correlation operation, the signal reaches the detection, when the correlation value is greater than the threshold of a certain number of times, that there is a signal to reach. Then, according to the characteristics of the long training word, the correlation operation is carried out, and the initial position of the OFDM symbol FFT is estimated. The estimated position of the FFT window, first in the time domain for small frequency offset estimation, two long training word for small frequency offset compensation, the FFT operation. According to the result of FFT for integer frequency bias estimation. Af)
- 2020-11-05 00:19:52下载
- 积分：1
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切比雪夫
通过给定天线阵列的参数，计算出切比雪夫馈电电流分布，并计算出方向图(By giving the parameters of the antenna array, the current distribution of the Chebyshev feed current is calculated and the direction map is calculated.)
- 2018-05-30 15:18:19下载
- 积分：1
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the-secret-of-MATLAB
用简单易行的风格，一开始介绍了MATLAB 基础，你将学习到如何绘制图象，求解代数方程及计算积分，也将学习到如何求解微分方程，求ODE 的数值解，使用特殊函数工作。
本书含有几百个例子及其详细解说过程，章末带有习题，书末还带最终测试题目，一句话，本书给予你的是MATLAB 精华.(Simple style , a start MATLAB basis ,
You will learn how to draw images, solving algebraic equations and calculate the integral , but also to learn Learning how to solve differential equations , and the ODE numerical solution to the use of special functions .
The book contains hundreds of examples and a detailed explanation of the process , the end of the chapter with exercises, the end of the book
With the final test subject , in a word , this book give you the MATLAB Digest
)
- 2012-04-28 17:13:13下载
- 积分：1
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m3
the file simulation in simulink matlab
- 2013-08-06 22:25:19下载
- 积分：1
