pso_liziqunsuanfa

一共四个小程序。实现QAM调制，QPSK调制，二元熵函数的绘制，迭代法求离散信道容量。(QAM,QPSK)

cheby space - numerical analysys(cheby space- numerical analysys)

多项式线性拟合，根据给出的（x，y）值，给出多项式的系数值。(Presented in this paper, according to polynomial linear fitting (x, y) value of polynomial coefficient values. )

旋转交错网格无匹配层有限差分，应力计算速度部分(Rotated staggered grid finite difference without matching layer, the stress part of the calculation speed)

OFDM系统的简单代码，便于初学者理解，设置了N=128个信道，传送1,0的随机数，并加入fading和AWGN noise(OFDM system simple codes, for beginners to be understood that the channel 128 is provided, fading and AWGN noise added)

CFD simulation of flux in coloocated grid

使用主成分分析对高维数据进行降维，程序包含了降维的过程和结果(Using PCA to reduct dimensionality for data. the program contains the process and solution.)

说明：  基于GUI界面的matlab演示程序，从简单的学起，从友好的交互页面学起。(GUI-based interface matlab demo program, from simple to learn, from the friendly and interactive pages to learn.)

basic operations on an image like negative, log

说明：  小波软阈值simulink模型,对带噪语音信号进行小波分解，得到高低频系数，然后对高低频系数进行阈值处理，然后就行重构得到去噪语音信号(the simulink model of yuzhi)