bpsk-modulationand-demodulation

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 )

说明：  * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. (* This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. )

MATLAB的时间序列分析相关函数,涵盖对时间序列分析所需要所有重要函数(MATLAB time series analysis of the correlation function, time series analysis covers all the important functions required for)

地震数据格式之间的转换，sac，miniseed，seed，这些数据格式进行转换(Seismic data conversion between formats, sac, miniseed, seed, the data format conversion)

绘制钢筋混凝土截面弯矩-轴力-曲率的程序，非常实用，适用用于做截面分析。(A program for drawing the M-N- of reinforced concrete cross section is very practical and suitable for making cross section analysis.)

This m file shows constellation for MQAM.

matlab开发的蚁群算法。希望对你有用。(Matlab development ant colony algorithm. Hope to be useful to you.)

MATLAB帮助文件 MATLaB7.0帮助文件(MATLAB help files MATLaB7.0 Help)

一种基于MATLAB平台的直流伺服仿真模型，直流电机(Based on MATLAB simulation model of a DC servo, DC)

本程序事实现遗传算法（GA）优化支持向量机（SVM），具有很好的学习价值。(This procedure to achieve something genetic algorithm (GA) optimization support vector machine (SVM), having a good learning value.)