EM_Algorithm

％ 文件名：randlsbget.m ％ 程序员:余波 ％ 编写时间:2007.6.25 ％ 函数功能: 本函数将完成提取隐秘于上的秘密信息 ％ 输入格式举例:result=( scover.jpg ,56, secret.txt ,2001) ％ 参数说明: ％ output是信息隐藏后的图象 ％ len_total是秘密信息的长度 ％ goalfile是提取出的秘密信息文件 ％ key是随机间隔函数的密钥 ％ result是提取的信息 function result=randlsbget(output,len_total,goalfile,key) ste_cover=imread(output) ste_cover=double(ste_cover) ％ 判断嵌入信息量是否过大 [m,n]=size(ste_cover) frr=fopen(goalfile, a ) ％ p作为信息嵌入位计数器将信息序列写回文本文件 p=1 ％ 调用随机间隔函数选取像素点 [row,col]=randinterval(ste_cover,len_toal,key) for i=:len_toal if bitand(ste_cover(row(i),col(i)),1)==1 fwrite(frr,1, bit1 ) result(p,1) else fwrite(frr,0, bit1 ) result(p,1)=0 end if p==len_total break end p=p+1 end fclose(frr) ()

全排列矩阵，依次输入exchange swap tianchongJ即可，若想修改全排列矩阵的大小，可在MATLAB中打开tianchongJ修改J和N。 (Permutation matrix, followed by the input exchange swap tianchongJ can, if you want to modify the size of permutation matrix can be modified in MATLAB to open tianchongJ J and N.)

simple problem(sonar) low pass filter

this matlab code presents a memory polynommial predistorter and a saleh model for the power amplifier

用matlab仿真实现了25 kHz 带宽内同时传送总共48 kbit/s 的两路语音(每路速率9. 6 kbit/s) 和两路数据信息(速率分别为19. 2 kbit/s 和9. 6 kbit/s) , 仿真结果表明达到了较好的误码性能。并比较了4 种数字调制方式下O FDM 系统的误码性能。(using Matlab Simulation bandwidth of 25 kHz simultaneous transmission within a total of 48 kbit/s 2 Road Voice (rate of 9 per road. 6 kbit/s) and two road data information (rate of 19. 2 kbit/s and 9. 6 kbit/s), the simulation results indicate achieve a better BER. And comparison of four types of digital modulation mode O FDM system BER.)

这个是用MATLAB编的一个维纳滤波器程序，内涵解释，对初学者会有帮助。(This is a Wiener filter program compiled using MATLAB, the connotation would help explain, for beginners.)

this code is used to generate 48 pulse for renewable energy soures

本文件为基于OMNeT_的Leach协议的仿真改进与研究(This document is based on the improvement and simulation of Leach agreement OMNeT_)

MATLAB FOR ADAPTIVE MODULATION IN MIMO OFDM FULL CODING COMPARISON FOR AWGN AND RAYLEIGH

Calculate geodesic distance