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OFDM
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。(First, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives. And then the characteristics of long training word, the correlation operation for the FFT window starting position of an OFDM symbol estimate. The estimated position of the FFT window, the first small frequency offset in the time domain estimation, the two long training word small frequency offset compensation, the FFT operation, the FFT result of the operation for integer frequency offset estimate. These parameter estimation is completed, the data can be demodulated on. The first portion of the data for a complete frequency offset compensation, and based on the estimated FFT window position of the FFT operation to obtain frequency domain data, demodulated. Then corresponding to the position of the pilot subcarriers are extracted on pilot inform)
- 2020-11-04 23:49:52下载
- 积分：1
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work122
这是用MATLAB编写的进行调色板图形绘制的程序(This is prepared by using MATLAB to carry out the procedure Rendering palette)
- 2007-12-12 13:41:08下载
- 积分：1
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DiaPCA
说明： 是关于对角PCA算法的matlab代码，包含对角化代码和对角化PCA代码(Is the angle of PCA algorithm on matlab code, including code and diagonalization Diagonalization PCA code)
- 2011-02-22 10:40:49下载
- 积分：1
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filter
地震资料数据处理中所需的低通、高通、带通以及梯形滤波器，对信号在频率域进行相应处理(Seismic data, data processing required in the low-pass, high pass, band-pass ladder filters, signal in the frequency domain
)
- 2012-05-12 16:33:58下载
- 积分：1
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dmc
预测控制中的动态矩阵智能控制的源代码程序(The source code of the dynamic matrix predictive control, intelligent control procedures)
- 2012-06-11 10:47:14下载
- 积分：1
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sa
说明： 灰色系统理论的灰色综合关联矩阵，et为大于阈值时的矩阵。(Gray gray system theory correlation matrix, et is greater than the threshold matrix.)
- 2013-03-29 23:05:01下载
- 积分：1
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discrete_convolution
离散卷积图法的MATLAB实现程序，MATLAB函数conv只能计算从零开始的两个右边序列的卷积，此程序对序列没有此限制，适用范围更广。(MATLAB discrete convolution diagram method to achieve the program MATLAB function conv can only calculate the convolution of the right sequence from scratch, this program sequence does not have this restriction applies to a wider range.)
- 2012-05-12 10:38:33下载
- 积分：1
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<数字信号处理>-光盘内容
<数字信号处理>（胡广书 编）课后习题的matlab编程(lt; Digital signal processing gt; (Hu-book series) Exercise of Matlab after-school programming)
- 2005-03-15 12:04:47下载
- 积分：1
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shujuku
matlab连接数据库SQL，然后打开数据库表格，并读取表格中的数据，进而对数据库进行操作(matlab connect to the SQL, and then open the table, and read the data in the table, then the operations)
- 2015-04-05 22:44:13下载
- 积分：1
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OAM_Purity
计算轨道角动量的纯度,解调的纯度分布情况存到一个用户自定义的TXT文档中(Calculate the purity of orbital angular momentum )
- 2015-05-08 10:43:20下载
- 积分：1
