new_error_rate

tthe leach code in matlab for wireless sensor network

source code for fingerprint using matlab

实现两个确定平面夹角的最佳衍射的角度确定(Determination of the optimum diffraction angle for two angles of plane determination)

M=512 原图像长度 N=64 K=8 I=zeros(M,M) J=zeros(N,N) BLOCK=zeros(K,K) 显示原图像 I=imread( f:ceshiyuanshitu.bmp ) figure imshow(I) xlabel( 原始图像 ) 显示水印图像 J=imread( f:ceshilogistic_nuaa64.bmp ) figure imshow(J) xlabel( 水印图像 ) 嵌入水印 tem=1 for p=1:N for q=1:N x=(p-1)*K+1 y=(q-1)*K+1 BLOCK=I(x:x+K-1,y:y+K-1) BLOCK=dct2(BLOCK) if J(p,q)==0 a=-1 else a=1 end BLOCK(2,1)=BLOCK(2,1)*(1+a*0.01) BLOCK=idct2(BLOCK) I(x:x+K-1,y:y+K-1)=BLOCK end end 显示嵌入水印后的图像 figure imshow(I) xlabel( 嵌入水印后的图像 ) imwrite(I, f:ceshiembedded.bmp )

此程序的功能是用自相关法求使信号s均方预测误差为最小的预测系数 (Feature of this program is to use the autocorrelation method for the signal s smallest mean squared prediction error of prediction coefficients)

基于差分进化的粒子群优化算法，（全局最优粒子群优化算法）(Based on differential evolution particle swarm optimization, (global optimization PSO))

matlab图形图像和声音的处理，例子很多(matlab book)

离散时间数据，采用五点样条插值，高精度时域求导。(Discrete-time data , using a five-point spline interpolation , derivation time domain accuracy. )

人工鱼群算法在优化配置中的应用，可以对参数进行优化选择(AFSA applications optimized configuration, you can choose to optimize the parameters)

ofdm发送端和接收端，根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。(ofdm sending end and receiving end, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives.)