beamfunction

this file is very useful for student to calculate structures with MATLAB

Simulink建模与仿真。包含一本关于Simulink建模仿真的书，以及一个很好的课件。(Simulink modeling and simulation. Contains a book on the Simulink modeling and simulation, as well as a good courseware.)

IRIS数据 供大家分析参考 此数据可以用于聚类分析(U.S. analysis of IRIS data for the reference of this data can be used to cluster analysis)

使用matlab读取大量实验数据，并进行计算和分析的程序(Using matlab to read large amounts of experimental data and calculations and analysis procedures)

对AM信号和QPSK信号的功率谱进行了比较，包含这两种信号的产生和功率谱的产生方法，具极强的参考价值(AM signal and the power spectrum of the QPSK signal, including both signal generation and the generation method of the power spectrum, with strong reference value)

说明：  This is a time series analysis matlab under the ARMA model and prediction procedures. ARMA algorithm by using a series of data to predict and analyze the prediction rule

Elman神经网络：Elman网络是 J. L. Elman于1990年首先针对语音处理问题而提出来的, 它是一种典型的局部回归网络( global feed for ward l ocal recurrent)。Elman网络可以看作是一个具有局部记忆单元和局部反馈连接的前向神经网络。Elman网络具有与多层前向网络相似的多层结构。它的主要结构是前馈连接, 包括输入层、 隐含层、 输出层, 其连接权可以进行学习修正 反馈连接由一组“结构 ” 单元构成,用来记忆前一时刻的输出值, 其连接权值是固定的。在这种网络中, 除了普通的隐含层外, 还有一个特别的隐含层,称为关联层 (或联系单元层 ) 该层从隐含层接收反馈信号, 每一个隐含层节点都有一个与之对应的关联层节点连接。关联层的作用是通过联接记忆将上一个时刻的隐层状态连同当前时刻的网络输入一起作为隐层的输入, 相当于状态反馈。隐层的传递函数仍为某种非线性函数, 一般为 Sigmoid函数, 输出层为线性函数, 关联层也为线性函数。(Elman neural network: Elman JL Elman network is first proposed for speech processing problems in 1990. It is a typical local regression network (global feed for ward l ocal recurrent). Elman network can be seen as having a forward neural network of local memory unit and local feedback connections. Elman network has a multi-layer multilayer structure similar to the network. Its main structure is a feedforward connection, comprising an input layer, a hidden layer and output layer, which can be connected right learning correction feedback connected by a set of " structural" units, the output value of the memory for the previous time, which connection weights are fixed. In such a network, in addition to ordinary hidden layer, there is a special hidden layer, called an associative layer (or contact layer unit) this layer receives feedback signals the hidden layer, each hidden layer node has an associated layer node corresponding connection. The role of the associated layer is fo)

Turbo码的C语言仿真以及matlab仿真，非常好的程序 (Turbo Code C-language simulation and matlab simulation, a very good program)

本程序为模糊聚类算法在图像分类中的应用。（图像的大小为30*30）。(This procedure for the fuzzy clustering algorithm in image classification applications. (Image size is 30* 30).)

turbo码是在无线通信中用的很多的一种信道编码方式.(turbo codes are used in wireless communications in a lot of channel coding.)