PCA

matlab仿真程序，产生QPSK调制的信号，严格按照QPSK的调制步骤分I路Q路产生信号，最后两路相加，产生已调信号，调制信号随机产生，载波信号是余弦信号。(matlab simulation program to produce the QPSK modulation signal, in strict accordance with the QPSK modulation of the sub-step road Q road I have a signal, the sum of the last two, have been transferred signal, randomly generated modulated signal, carrier signal is a cosine signal.)

power active filter simulation

用矩形窗设计线性相位FIR低通滤波器,给了源代码，已经调试过了。其中要用到一个函数myfreqz要自己编，在这也附上其代码。希望对大家有用。(Rectangular window with the design of linear phase FIR low-pass filter, to the source code, have been debug. To use a function which myfreqz to own, in that its code is also attached. Hope useful for everyone.)

用三种方法解决城市距离问题（或背包问题）。三种方法分别为：遗传算法，蚁群算法，粒子算法。(Three ways to solve the problem of urban distance (or knapsack problem). Three methods are: genetic algorithm, ant colony algorithm, particle algorithm.)

说明：  认知无线电切换算法，基于排队论，考虑主用户是否随机接入两种情况。(Cognitive radio handover algorithm based on queuing theory, to consider whether the user random access to two main situations.)

How to calculate PSNR of a yuv video.

speech signal processing toolbox

关联规则挖掘算法的matlab程序，我编写了Apriori算法的FLpMGH 步骤，可以自动生成关联规则，计算支持度、置信度以及 aXlJybd 检测，很好的小程序。(Association rule mining algorithm matlab program, I wrote FLpMGH step Apriori algorithm can automatically generate association rules, computing support, confidence and aXlJybd detection, good little program.)

在Matlab环境下实现的FIR滤波器，以通过编译和运行，可用(In the Matlab environment realize the FIR filter, and run through the compiler can be used)

PCDMIS电极检测方案,可以自动搜寻基准12个点的位置，并计算出电极坐标(PCDMIS electrode detection scheme that can automatically search for the location of the base 12 points and calculate the coordinates of the electrodes)