chap6

说明：  较完全的Matlab通信系统仿真程序。。。。。。。。(More complete communication system simulation program Matlab. . . . . . . .)

利用pcnn，每当有一批像素对应的神经元点火，对像素值进行一次修正。第n次点火的所有神经元用矩阵B（n）表示， 已经点火的像素位置标记为‘1’，未点火的标记为‘0’。通过一个3*3的模板滑过B（n），判断若模板内的值全为‘1’或全为‘0’， 则这些像素值不进行处理，否则若模板中心的值为‘1’，则增加该位置的像素值的大小，中心值为‘0’，则减小像素值。该功能由xiugai(B,K)函数实现 Beta取负值来抑制周围的神经元点火，因为输入pcnn（X）的是模糊图像，抑制之后使处理的像素值更加接近原图像的像素值（抑制参数通过试验确定，并不精确） 总之运行结果只是对像素值变化较大的边缘区域进行了像素值的修正。 通过不断调整参数使峰值信噪比有所升高，但是升高得不是太多(Use pcnn, whenever a group of pixels corresponding to the firing of neurons, a correction value for the pixel. Ignition of all the n-th neuron matrix B (n) represents, Already ignition pixel position labeled 1 , unfired labeled 0 . By a 3* 3 templates over the B (n), determines if the value within the template are all 1 or all 0 , These pixel values are not processed, otherwise the value if the template center 1 , then the increase in the size of the pixel values of the position, the center value of 0 , the pixel value is reduced. This function is implemented by xiugai (B, K) function Beta is a negative value around the element to inhibit neuronal firing, because the input pcnn (X) is a blurred image, the pixel values of inhibition after treatment of the pixel value closer to an original image (suppression parameter determined by experiment, is not exact) Results only in short run large changes in the edge region of the pixel values of the corrected pixel values. )

可以根据图中点的位置判断连接关系，然后搜寻图中的MDS（最小支配集合）(You can determine the connection between the position according to FIG midpoint, then search graph MDS (Minimum Dominating Set))

用扩展有限元反应数字散斑图像位移和应变信息的小程序，并在matlab上进行运算，精确到亚像素。(Extended Finite Element reaction with digital speckle image displacement and strain small program information, and on the matlab calculates accurate to sub-pixel.)

说明：  用于生成带噪声的无人机飞行轨迹，同时通过中值和小波滤波方式进行噪声去除(It is used to generate the flight path of UAV with noise and remove the noise by means of median and wavelet filtering)

MATLAB HELP FUNDENMENTAL IN YOUR CODE 22

说明：  矩阵QR分解，采用householder方法。输入矩阵，返回分解参量，QR decomposition(QR decomposition)

AOFDM系统matlab仿真程序，包括映射、fft/ifft，加去循环前缀，信道估计等关键模块(AOFDM system Matlab simulation program, including mapping, fft/ifft. to increase cyclic prefix, channel estimation and other key modules)

hai this is useful for wavelet programming

matlab draw examples