Data-fitting-and-spectral-analysis

Rectangular pulse propagation with FDTD Matlab

直接序列扩频仿真实例，产生m序列，然后进行扩频通信，对初学者很有用啊(Direct Sequence Spread Spectrum simulation example, useful for beginners )

说明：  非数值并行算法：遗传算法，遗传算法的一个教程，很适合初学者(Non-numerical parallel algorithms: Genetic algorithm, genetic algorithm tutorial, very suitable for beginners)

说明：  运用Matlab中的一些基本矩阵计算方法，通过自己编程实现聚类算法，在此只讨论根据最短距离规则聚类的方法。(The use of Matlab, some of the fundamental matrix method, clustering algorithms, through their own programming, in which only discuss the rules under the shortest distance clustering method.)

主要是利用转换域算法来进行OFDM信道估计，并将其与LS算法进行比较(Transform domain algorithm for OFDM channel estimation, and comparison with the LS algorithm)

近红外光谱分析中的BP模型建立过程，其中在原有BP神经网络模型的基础上自己编程加入了近红外模型验证系数的计算，如R-SquareC.R-SquareP,RMSEC,RMSEP,RSD等。并加入循环语句，设定区间程序可以自动运行并判断最佳隐含层结点数，最佳学习速率，动量因子，训练次数等，同时加入一个验证校正模型实例。(The process of BP model in near infrared spectrum analysis, including the original BP neural network model on the basis of their programming joined the nir model validation coefficient calculation, such as R- SquareC. R- SquareP, RMSEC, RMSEP, RSD, etc. And join the loop statement, set interval program can be run automatically and determine the best hidden layer nodes, the optimal learning rate, momentum factor, the number of training, etc. )

该程序用于求单跨梁振型及频率（梁的两端任意约束）(The procedure for seeking a single cross-Liang type and frequency (arbitrary constraints at both ends of beams))

阿兰方差的基本实现，可对滤波效果进行检验。(Allan scheme,which can terify the results of denoising in terms of three noise factors.)

基于快速傅里叶变换的MATLAB实现，内附有源程序(MATLAB based on fast Fourier transform implementation, enclosing a source)

这是一个自编的最小均方误差的自适应滤波器的程序(This is a self of the minimum mean square error of the adaptive filter procedures)