suijixinhao

matlab code for finite element method

Matlab实现史密斯圆图的绘制程序。 这个Matlab程序，绘制史密斯圆图，同时绘制反射系数。(Matlab Smith chart drawing program. The Matlab program to draw a Smith chart, draw the reflection coefficient.)

设计一维纳滤波器。 （1）产生三组观测数据，首先根据s(n)=as(n-1)+w(n)产生信号s(n)，将其加噪(信噪比分别为20dB，10dB，6dB)，得到观测数据x1(n)，x2(n)，x3(n)。 （2）估计xi(n)，i=1,2,3的AR模型参数。假设信号长度为L，AR模型阶数为N，分析实验结果，并讨论改变L，N对实验结果的影响。 (Design a Wiener filter. (1) generate three sets of observations data, first according to s (n) = as (n-1)+w (n) to generate a signal s (n), which add noise (SNR respectively 20dB, 10dB, 6dB), obtained observation data x1 (n), x2 (n), x3 (n). (2) estimate xi (n), i = AR model parameters 1,2,3. Assuming the signal length L, AR model of order N, analysis of experimental results and discuss changes affect L, N of the experimental results.)

连续信号（可以自定义的函数）的FFT效果图，初学者学习的例程，不错(Continuous signal (can custom functions) of the FFT renderings, for beginners to learn the routine, good)

exercise 4 for icarnegie ssd4

偏最小二乘(PLSR) 分别求出样品集光谱矩阵和样品组分矩阵的主成分矩阵,将这两个矩阵相关联,求其线性关系,用所建立的线性函数来预测未知样品。 (Partial least squares (PLSR) The principal component matrix samples were calculated in the spectral matrix and sample matrix, the two matrix associated with the linear relationship, linear functions are developed to predict unknown samples.)

lms自适应滤波算法lms自适应滤波算法(lms adaptive filtering algorithm)

交错网格---非均匀介质二维声波方程(一阶压力--速度)、2阶时间差分、2阶空间差分精度(Staggered grid- heterogeneous medium two-dimensional acoustic wave equation (first-order pressure- speed), 2 order time difference, space 2 order difference accuracy)

用软频率处理小区间的干扰，并将小区分成内环外环中环三个部分，仿真分析当三个环 的发射功率不同时的各个部分的吞吐量比较。(With a soft frequency interference among processing district, and residential area is divided into central, inner loop three parts, the simulation analysis when the transmission power of three ring does not throughput of each part of the comparison at the same time.)

Recurrence quantification analysis (RQA) of recurrence plots (RPs)