zuixiaoercheng

optimization power flow

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)

滤波器实例，matlab的，学完动态信号分析的作业，华南理工大学研究生课程(Filter instance, matlab, completion of the job of the dynamic signal analyzer, South China University of Technology postgraduate courses)

数学建模2001年A题论文，VC++程序和Matlab程序处理100张血管的三维重建(A problem of mathematical modeling paper in 2001)

该程序对ofdm系统中mmsnr的信道缩短算法的误码率性率进行了仿真，而且与没有信道缩短的只加cp的ofdm的系统进行了对比.程序包可以完整实现仿真，并得到理想的效果图，相信对做信道时域均衡的人会有所帮助！(ofdm mssnr TEQ equlization)

一个拟合椭圆的程序，采用matlab编程，利用均值误差作为代价函数。(A fitting elliptical procedures, the use of matlab programming, using the mean error as the cost function.)

psd estimation using bartlet method

稀疏矩阵的输入 200x200大矩阵的巧妙输入 (Clever input sparse matrix input 200x200 matrix)

增广的最小二乘辨识程序 梯度校正的最小二乘辨识程序 递推的极大似然辨识程序(允许输入拉丁字符的拼音 Augmented least squares identification procedure Gradient-corrected least squares identification procedure Recursive maximum likelihood identification program)

Converts a pointcloud (unordered vertices) to a mesh of triangles by connecting the nearest 3 points and calculates the normal of each vertex and triangle. Also finds the neighboring triangles of each vertex and the neighboring triangles of each triangle