spnet

Matlab codes for Contemprary Communication systems using matlab

matlab 14 -bus data

均匀圆阵下基于UCA-ESPRIT的二维DOA估计的MATLAB程序(Under the uniform circular array based on two-dimensional DOA UCA-ESPRIT estimates MATLAB program)

基于2阶消失矩的Coifman小波基函数的2维MRTD电磁散射正演模型，吸收边界为PML。(Based on 2 vanishing moments of the Coifman wavelet function of 2-D MRTD forward model of electromagnetic scattering, absorbing boundary for the PML.)

运用MCA算法，进行图像的分离，通过稀疏表示的K-SVD算法，将图像分为卡通和纹理部分(The MCA algorithm is used to separate the images. The sparse representation of the K-SVD algorithm is used to separate the images into cartoons and textures)

实现卷积编码和相应的维特比译码（卷积码编码器为（2，1，3），维特比译码针对第1、3位模二加和第1、2位模二加）(Convolutional coding and the corresponding realization of Viterbi decoding (convolutional code encoder for the (2,1,3), Viterbi decoder bit mode for the first 1,3 and 1,2 position two plus two plus model ))

matlab在最优中的应用,是非常好的书哦，对于研究最优化应用的人很有用(use matlab to solve optimization problem)

说明：  矩阵求逆（lu分解法），已在matlab下进行测试，计算精度大概为小数点后4位(Matrix inversion (lu decomposition method), has been tested under matlab, after the decimal point accuracy is approximately 4)

studty the chaotyic system

用Matlab编程，实现解决该问题的单样本训练BP网络，设置一个停止迭代的误差Emin和最大迭代次数。在调试过程中，通过不断调整隐层节点数，学习率η，找到收敛速度快且误差小的一组参数。产生均匀分布在区间[-4，4]的测试样本，输入建立的模型得到输出，与Hermit多项式的期望输出进行比较计算总误差（运行5次，取平均值）(Using Matlab programming, to solve the problem of single sample training BP network, set a stop error iterations Emin and the maximum number of iterations. In the debugging process, by continuously adjusting the hidden layer nodes, learning rate η, fast convergence and find a set of parameters small errors. Produce a uniform distribution in the interval [4,4] of the test sample, the model has been established input output with the expected output Hermit polynomial calculated by comparing the total error (run 5 times the average))