xinhao

this program simulates 2D electromagnetic Maxwell equations , by using finite difference time domain method FDTD..and it simulates the perfect matched layer to prevent the reflections that may occure at the boundaries of the problem space

matlab source code for OFDM channel

基于RFE特征选择方法的多分类特征排序，Matlab平台(Multi class feature ranking based on RFE method)

contemporary communications

文件包含现代信号处理的常用算法的matlab源代码(Document contains commonly used in modern signal processing algorithm matlab source code)

说明：  一种FxLMS自适应滤波算法 LMS自适应滤波算法RLS自适应滤波算法变换域自适应滤波算法仿射投影算法共扼梯度算法基于子带分解的自适应滤波算法基于QR分解的自适应滤波算法算法性能评价变步长的自适应滤波算法时变系统跟踪速度与收敛精度方面对算法调整步长因子u的矛盾,但变步长中的其它参数的选取还需实验来确定,应用起来不太方便。对RLS算法的各种改进,其目的均是保留RLS算法收敛速度快的特点而降低其计算复杂性。变换域类算法亦是想通过作某些正交变换使输入信号自相关矩阵的特征值发散程度变小,提高收敛速度。而仿射投影算法的性能介于LMS算法和RLS算法之间。共扼梯度自适应滤波算法的提出是为了降低RLS类算法的复杂性和克服某些快速RLS算法存在的数值稳定性问题。信号的子带分解能降低输入信号的自相关矩阵的特征值发散程度,从而加快自适应滤波算法的收敛速度,同时便于并行处理,带来了一定的灵活性。(A FXLMS adaptive filtering algorithm)

应用最小二乘法对一阶系统进行辨识，得到相应的参数(Least square method the first order system identification, the corresponding parameters)

将指纹图像分为好、中、差三类，然后根据典型的质量指标在各类质量中的影响度来设定相关的权重，以此可以更准确的表示图像质量，提高指纹识别的后续处理的准确性，系统的稳定性(Fingerprint image is divided into good, normal and poor, and then the typical quality indicators in the quality of the impact of various degrees to set the associated weight, this can be a more accurate representation of image quality and follow-up to deal with fingerprint recognition accuracy, system stability)

先进PID控制MATLAB仿真（刘金琨）源代码PID程序,包含本书所有M文件(Advanced PID control MATLAB simulation (Hangzhou Press) PID program source code, including all M-book file)

这个程序在认知无线电中的频谱计算方法，是一种经典的计算方法，十分好用。(The program in cognitive radio spectrum is obtained by a classical method of calculation is very easy to use.)