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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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poisson
求解poisson方程的经典有限元程序！(a classical fem program for poisson equation)
- 2020-06-16 19:20:03下载
- 积分：1
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KIM模型
说明： Kim模型仿真的MATLAB代码。利用Kim模型计算衰减系数作为能见度的函数。(To evaluate attenuation coefficient as a function of visibility.Using the Kim model.)
- 2020-05-10 20:49:01下载
- 积分：1
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matlab1
matlab经典课件(matlab classic Courseware)
- 2008-12-15 02:26:58下载
- 积分：1
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CALL
matlab transformed to C++. Eigenvalue
- 2013-04-04 12:44:19下载
- 积分：1
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Secure-Force-Algorithm
implementation of Secure Force Encryption Algorithm for images.
- 2015-02-02 16:53:49下载
- 积分：1
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jakes
描述jakes模型的衰落信道。程序已经测试过。(Description jakes fading model. Procedures have been tested.)
- 2010-06-05 20:14:40下载
- 积分：1
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matlabjiangyi
这是一个matlab讲义，内容丰富，我发给了几个同学，都说不错。(err)
- 2007-12-27 21:07:42下载
- 积分：1
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Kalmanfilter
使用MATLAB软件完整实现了科尔曼滤波过程。(The use of MATLAB software integrity Coleman realize the filtering process.)
- 2008-05-09 18:43:51下载
- 积分：1
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CInterface
CInterface simulation in matlab simulink
- 2013-08-05 14:10:17下载
- 积分：1
