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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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Kmeans_clustering_matlab
以227家公司的数据为基础进行kmeans clustering分组，用以预测50家未知公司的效益(Use 227 the companies data as the basis for kmeans clustering to predict the effectiveness of the 50 unknown companies)
- 2009-09-14 01:03:46下载
- 积分：1
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s223_PLL_10b
自己搭的三相锁相环模拟电路，作业经过运行验证，能够很迅速的锁定电压电流相位。(Take their own three-phase PLL analog circuits, after running the verification, the lock can be very rapid phase of voltage and current.)
- 2011-08-15 14:49:40下载
- 积分：1
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image--bianhuan
包含了巴特沃斯滤波、维纳滤波、求灰度直方图、灰度变换、灰度图像变成RGB图像(Contains the butterworth filter, wiener filtering, gray histogram, gray level transformation, gray image into RGB image)
- 2014-12-10 15:13:57下载
- 积分：1
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matlab-1
仿真不同占空比，等概、非等概双极性矩形随机信号的归一化功率谱密度，分析不同信号所包含的频谱分量，有无直流分量和定时分量信息
(Simulation different duty cycles, etc. There is, and so there was a non-random signal bipolar rectangular normalized power spectral density analysis of the spectral components of different signal contained, with or without DC component and timing component information)
- 2013-12-10 00:25:40下载
- 积分：1
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贝叶斯程序b1110eiyesi
贝叶斯程序 本程序所用算法为单样本裕量松弛算法(Bias process
The algorithm used for this algorithm is a single sample margin relaxation algorithm)
- 2020-07-14 02:08:51下载
- 积分：1
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mat
remote sensing 112313
- 2012-04-14 18:29:15下载
- 积分：1
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the-mathematical-theory-of-BEM
自然边界元数学理论，于德浩教授编著。对于椭圆编制问题规划给出了较为详细数学理论解释，对于工程和理学专业的程序的编写有较好的辅助作用。(Natural Boundary Element mathematical theory, Professor Yu Dehao ed. For the preparation of the problem oval plan gives a more detailed explanation of the mathematical theory, for the preparation of professional engineering and Science program has a good supporting role.)
- 2014-11-29 10:58:05下载
- 积分：1
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mat
matlab simulink 模糊控制器模型(matlab simulink fuzzy controller model)
- 2014-01-17 10:21:25下载
- 积分：1
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DDE-biftool
这是国外用的研究分岔的完整的M程序，很有用，属再版的(This is a study abroad with a complete bifurcation of M procedures, very useful, is a reprint of)
- 2021-01-19 15:18:42下载
- 积分：1
