qam_demodulation

按照A13律编码对一个离散序列对信号进行编码，通信原理(encode by A13-law)

this file about matlab sent by Mohammad Javad Deriss

matlab的ASM算法工具箱,很好用的(ASM matlab toolbox)

本程序能实现离线的数字识别，在MATLAB下运行，同时可以用其中部分代码实现图像的灰度，二值化，细化，归一化等功能，采用Bp神经网络。(This procedure can achieve the number of off-line identification, in the MATLAB run, at the same time part of the code can achieve one of the gray-scale images, binarization, thinning, and other functions normalized using Bp neural network.)

matlab智能算法20个案例分析，终极版，带目录(Intelligence Algorithms)

DOA 中的DML,DML为确定性最大似然算法，具有估计精度高、抗噪性强的优点(In DOA,DML is a deterministic maximum likelihood algorithm, which has the advantages of high estimation accuracy and strong anti-noise)

无线传感器网络中距离无关的定位算法DVHOP的简单程序，有注释，可调试。(Wireless sensor network localization algorithm DVHOP from unrelated simple program, there are notes, can be debugged.)

this is the code about display and plot average

克里金法广泛地应用于地下水模拟、土壤制图等领域，是一种很有用的地质统计格网化方法。它首先考虑的是空间属性在空间位置上的变异分布．确定对一个待插点值有影响的距离范围，然后用此范围内的采样点来估计待插点的属性值。该方法在数学上可对所研究的对象提供一种最佳线性无偏估计(某点处的确定值)的方法。它是考虑了信息样品的形状、大小及与待估计块段相互间的空间位置等几何特征以及品位的空间结构之后，为达到线性、无偏和最小估计方差的估计，而对每一个样品赋与一定的系数，最后　进行加权平均来估计块段品位的方法。(Kriging is a technique that provides the Best Linear Unbiased Estimator of the unknown fields (Journel and Huijbregts, 1978 Kitanidis, 1997). It is a local estimator that can provide the interpolation and extrapolation of the originally sparsely sampled data that are assumed to be reasonably characterized by the Intrinsic Statistical Model (ISM). An ISM does not require the quantity of interest to be stationary, i.e. its mean and standard deviation are independent of position, but rather that its covariance function depends on the separation of two data points)

采用有限单元法计算平面刚架自振频率，可生成单刚、单元质量阵并组成总刚、总质量矩阵，并绘图显示。(Plane frame using the finite element method to calculate the natural frequency can be generated just a single unit consisting of the total mass matrix and just total mass matrix, and graphics.)