task1

一篇很好的关于PDE的文章，涉及到了基本理论，实现方法，技术路线，值得看看(A very good article on the PDE, relate to the basic theory, methodology, technical line, is worth a look)

本程序实现了基于相关矩阵法的LTE及4G中MIMO多径信道的仿真，最终获得了MIMO信道的传播矩阵。（第一步，选择应用场景（确定信道参数和天线配置参数）；第二步，计算相关矩阵，并做Cholesky分解；第三步,利用Jakes模型产生多普勒随机变量；第四步,形成TDL；第五步，根据前四步准备，最终得到MIMO多径信道的信道传输矩阵）(This procedure achieved based on the correlation matrix method and 4 g LTE MIMO in multipath channel simulation, finally obtained the spread of the MIMO channel matrix.)

这是关于卡尔曼滤波算法的matlab程序(This is on the Kalman filter algorithm matlab program)

正交信号校正法主要用于近红外光谱矩阵的预处理。其原理是将光谱阵与全氮含量阵正交,滤除光谱与因变量Y阵无关的信号,再建立定量校正模型,达到简化模型及提高模型预测能力的目的。(Orthogonal Signal Correction(OSC) removes variance in the X-block which is orthogonal to the Y-block. Such variance is identified as some number of factors (described as components) of the X-block which have been made orthogonal to the Y-block. When applying this preprocessing to new data, the same directions are removed from the new data prior to applying the model.)

2DPSK（差分编码调制）调制与解调。用matlab实现(2DPSK (differentially encoded modulation) modulation and demodulation. Using matlab)

描述一种信道，通过卡尔曼滤波器对信道信号进行估计(A channel described by the Kalman filter to estimate the channel signal)

高斯信号脉冲成型，可以作为通信系统的输入端信号。(The Gauss pulse shaping can be used as the input signal of the communication system)

输入： 二维矩阵；输出：降维结果； 共包含34种降维方法，线性/非线性；局部/全局；监督/非监督(Input: 2-D matrix; output: dimension reduction result; contains 34 dimensionality reduction methods, linear / nonlinear; local / global; supervised / unsupervised.)

用matlab来仿真floyd算法，并计算任意两点的最短路径和路由；(Using matlab to simulate floyd algorithm, and calculate any two of the shortest path and routing )

this is a project for os labratoar .the subject is one lane bridge