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filer_by_matlab
维纳滤波器实现中值滤波，该程序是用matlab源代码来实现的。(Wiener filter realization of median filtering, the program source code with matlab achieved.)
- 2008-05-04 21:51:27下载
- 积分：1
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lms_yule_walker
说明： lms算法的仿真和yule_walker方程的仿真。这两种算法都是随机信号处理的有效方法。(lms algorithm yule_walker of the simulation and the simulation equations. These two algorithms are effective random signal processing methods.)
- 2020-10-18 19:57:26下载
- 积分：1
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codage
compression and decompression for image
- 2009-11-11 15:57:33下载
- 积分：1
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shuzhitiaozhi
两个最近通信常用的数字调制技术的仿真,mpsk(two recent communication commonly used digital modulation technology simulation, mpsk)
- 2007-05-15 22:33:55下载
- 积分：1
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adaboost
AdaBoost元算法属于boosting系统融合方法中最流行的一种，说白了就是一种串行训练并且最后加权累加的系统融合方法。
具体的流程是：每一个训练样例都赋予相同的权重，并且权重满足归一化，经过第一个分类器分类之后，
计算第一个分类器的权重alpha值，并且更新每一个训练样例的权重，然后再进行第二个分类器的训练，相同的方法.......
直到错误率为0或者达到指定的训练轮数，其中最后预测的标签计算是各系统*alpha的加权和，然后sign（预测值）。
可以看出，训练流程是串行的，并且训练样例的权重是一直在变化的，分错的样本的权重不断加大，正确的样本的权重不断减小。
AdaBoost元算法是boosting中流行的一种，还有其他的系统融合的方法，比如bagging方法以及随机森林。
对于非均衡样本的处理，一般可以通过欠抽样(undersampling)或者过抽样(oversampling)，欠抽样是削减样本的数目，
过抽样是重复的选取某些样本，最好的方法是两种进行结合的方法。
同时可以通过删除离决策边界比较远的样例。
(AdaBoost boosting systems dollar fusion algorithm is the most popular one, it plainly systems integration approach is a serial train and final weighted cumulative.
Specific process is: Each training example is given equal weight, and the weights satisfy normalization, after the first classifiers after
Calculating a first classifier weights alpha value for each sample and updates right weight training, and then the second classifier training, the same way .......
0, or until the specified error rate training rounds, wherein the label is the calculation of the final prediction system* alpha weighted and then sign (predicted value).
As can be seen, the training process is serial, and weight training examples is always changing, the right of the wrong sample weight continued to increase, the right to correct sample weight decreasing.
AdaBoost algorithm is an element, as well as other methods of boosting popular systems integration, such as bagging and random forest method.
For )
- 2014-07-09 19:24:29下载
- 积分：1
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SVD
常规DOA谱估计music算法在多径环境下失效，SVD算法利用最大特征值对应的特征矢量重新构造奇异值矩阵，可以成功估计相干信号。(Conventional music spectrum estimation algorithm for DOA in multipath environment, failure, SVD algorithm using the maximum eigenvalue of the feature vector corresponding to re-construct singular value matrix, can be successfully estimated coherent signal.)
- 2009-10-31 14:40:49下载
- 积分：1
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OFDMChannelEstimationBasedonCombPilot
做毕设用到的关于mimo-ofdm信道估计(Complete set used to do on the mimo-ofdm channel estimation)
- 2021-04-11 20:58:57下载
- 积分：1
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matchwave_pipei
MATLAB实现EMD分析振动信号时的波形匹配延拓，此方法可以一定程度上降低希尔伯特黄变换引起的端点效应(MATLAB to achieve EMD analysis of vibration signals when the waveform matching extension, this method can be reduced to some extent, the Hilbert yellow transform caused by the endpoint effect)
- 2017-05-02 17:02:52下载
- 积分：1
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matlab6.5
使用matlab实现图像处理的几个程序，包括二维绘图，三维绘图，MATLAB 图形对象，MATLAB 图形对象操作等(Matlab image processing to achieve the use of several procedures, including two-dimensional graphics, three-dimensional graphics, MATLAB graphics objects, MATLAB graphics object operation)
- 2009-05-01 13:45:13下载
- 积分：1
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IRR-digital-high-pass-filter
IRR数字高通滤波器matlab程序代码(IRR digital high pass filter matlab code)
- 2011-05-04 16:20:28下载
- 积分：1
