CR-Spectrum_sensing

8psk的解调doc文章，超级有价值，可以用于工程实践。(8PSK demodulation doc articles, super valuable and can be used in engineering practice.)

实现9/7小波正反变换 注1： 采用标准正交方法，对行列采用不同矩阵（和matlab里不同） 注2： 为了保证正交，所有边界处理，全部采用循环处理 注3： 正交性验证，将单位阵带入函数，输出仍是单位阵（matlab不具有此性质） 注4： 此程序是矩阵实现，所以图像水平分量和垂直分量估计被交换位置 注5： 此程序实现的是类小波（wavelet-like）变换，是介于小波包变换与小波变换之间的变换 注6： 此程序每层变换相对原图像矩阵，产生的矩阵都是正交阵，这和小波包一致 注7： 但小波变换每层产生的矩阵，是相对每个待分解子块的正交矩阵，而不是原图像的正交矩阵 注8： 且小波变换产生的正交矩阵维数，随分解层数2分减少 注9: 提升系数可以在MATLAB7.0以上版本，用liftwave( 9.7 )获取，这里直接给出，考虑兼容性 注10：由于MATLAB数组下标从1开始，所以注意奇偶序列的变化 注11：d为对偶上升，即预测；p为原上升，即更新(Note 1: The standard orthogonal method, the ranks of the different matrices (and matlab where different) Note 2: In order to ensure orthogonality, all boundary treatment, all with recycling Note 3: Orthogonal validation, the identity matrix into the function, the output is still the unit matrix (matlab does not have this property) Note 4: This program is a matrix to achieve, so the image horizontal and vertical components is estimated to be swapped Note 5: This class implements the wavelet (wavelet-like) transformation, is between the wavelet packet transform and wavelet transform between Note 6: This procedure transforms each image relative to the original matrix, the resulting matrix are orthogonal matrix, consistent with this and wavelet packet Note 7: But each generation wavelet transform matrix, is to be broken down for each sub-block relative to the orthogonal matrix, rather than the original image of the orthogonal matrix Note 8: Wavelet transf)

使用bp预测模型，通过matlab变成实现对现实生活进行应用于预测。(the real example for the bp model to forecast something)

电极系测井曲线 用matlab编写的用于学测井同学用(Electrode system logs using matlab for students with learning logs)

CSMA-CA的完整代码，有波形图，可以分析误码率，还是比较全的(CSMA-CA is a complete code, waveform, you can analyze the error rate is still relatively wide)

this is a code to calculate the moment invariant of images. the values which come out are capable of removing rotational, scaling, transnational variation in image given as input.classification can be done with the help of it.

直升机气动系统参数辨识 (Helicopter pneumatic system parameter identification)

The MATLAB DMTTEQ Toolbox is a collection of MATLAB functions to design and test the following time domain equalizer design methods

本书适用于有了一定matlab基础的人群，旨在matlab工程上的各种应用，不论是学习还是工作，都非常有用(This book is for people with certain basic matlab, matlab engineering to a variety of applications, whether learning or work, are very useful)

fem example for students