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非负矩阵分解的人脸识别NMF 可正常运行 算法源码(Non-negative matrix factorization NMF for face recognition algorithms can be the normal operation of source)

把辨识分成两步进行：第一步：利用相关分析法获得对象的非参数模型（脉冲响应或相关函数）；第二步：利用最小二乘法、辅助变量法或增广最小二乘法等，进一步求的对象的参数模型。如果模型噪声与输入无关，则Cor-ls相关最小二乘法（二步法）可以得到较好的辨识结果。Cor-ls相关最小二乘法（二步法）实质上是先对数据进行一次相关分析，滤除了有色噪声的影响，再利用最小二乘法必然就会改善辨识结果。能适应较宽广的噪声范围，计算量不大，初始值对辨识结果影响较小。但要求输入信号与噪声不相关(The identification is divided into two steps: the first step: using the correlation analysis method for object nonparametric model (impulse response or related function) The second step: using the least squares method, auxiliary variable method or augmented least squares method and so on, further for the parameters of the object model. If the model input noise and independent, the Cor- ls related least squares (two footwork) can get good recognition results. Cor- ls related least squares (two footwork) is essentially the data to a correlation analysis, filter in addition to the influence of colored noise, using least squares inevitable will improve the identification result. To adapt to a wide range of noise and calculation is not big, the initial value to identification results less effect. But for the input signal and noise are not related)

本程序采用的是基于matlab的PQ分解法潮流计算，程序主要分为三个部分：第一部分用于生成系统的节点导纳矩阵。第二部分主要进行潮流系统的迭代运算。第三部分主要用于对程序最后输出结果的计算，如电压的幅值，相角，功率分布等。(This procedure is used in matlab the PQ decomposition method based on flow calculation, the program is divided into three parts: The first part of the node admittance matrix used to generate the system. The second part of the iteration trend system. The third part is mainly used for the calculation of the final output of the program, such as the amplitude of the voltage, phase angle, power distribution.)

内包含频域滤波的步骤及MATLAB代码，是频域增强中所必须知道的哦，还有一个用巴特沃思滤波器效果的例子。(Contains the frequency domain filtering steps and MATLAB code, is enhanced in the frequency domain needs to know Oh, and a Butterworth filter with the effect of example.)

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说明：  awgn 信道下 ldpc与FQPSK的串行级联系统，(AWGN channel，serially concatenated FQPSK modulation system with ldpc)

说明：  无线通信基础，MIMO必读，MIT研究生教材，英文原版 (Wireless communications infrastructure, MIMO must-read, MIT graduate student teaching, the English original)

单次脉冲产生,或者周期脉冲产生.周期时间或脉冲宽度可以调节.(Single pulse, or cycle pulse. Cycle time or pulse width can be adjusted.)

lab1: Introduction to digital image processing

. The reference simulator can be used to measure and plot the network capacity performance and signal to interference ratio (SIR) performance of LTE networks with the integer frequency reuse scheme with reuse factor 1 (IFR-1). Frequency reuse scheme with reuse factor 1 means that the available frequency resource is used by all the cells in the LTE network. You are advised to refer to the relevant slides of lecture 5 to get more information on the method used to calculate the SIR and capacity performances. The system level LTE is consisted of two Matlab script files (LTE_main.m, LTE_configuration.m), three Matlab function files (LTE_IFR_sim_dist.m, LTE_IFR_sim_netwide.m, LTE_IFR_plot.m) and one Matlab mat file (bs_user_position.mat).