case57

to find the correlation of the image

MATLAB-SimMechanics机构动态仿真讲解教程(Dynamic simulation of MATLAB-SimMechanics bodies to explain the tutorial)

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)

CS中的omp重构算法，非常好的一个程序(omp )

通过虚拟阵元进行DOA估计，基于小波变换的数字水印算法matlab代码，有较好的参考价值。( Conducted through virtual array DOA estimation, Based on wavelet transform digital watermarking algorithm matlab code, There are good reference value.)

说明：  MATLAB 编写的用matlab 来实现的pde图像增强方法，如果不对的地方，请各位指出。(This is an enhance image example to use pde ways,if there is some problems ,please tell me )

Clever B.Moler 博士的经典著作《Mumerical Computing with MATLAB》介绍的一个ode23简化版ode23tx算法思想及其程序代码。(Clever B.Moler Dr. classics " Mumerical Computing with MATLAB" describes a simplified version of ode23tx ode23 algorithm ideas and program code.)

说明：  这个是基于非测距无线传感器网络定位算法的仿真(This is based on the non-distance localization algorithm in wireless sensor network simulation)

直接正交信号校正主要用于光谱数据的校正，以及用于多变量分析的预测。(This algorithm is mainly used for the correction of spectral data using direct orthogonal signal correction method, as well as for multivariate analysis)

基于负荷平衡的配电网重构程序 matlab下调试通过 (reconfiguration for distribution achieved)