xuanzhuan

说明：  4元系统规则重复累积码的仿真程序，H矩阵构造乃个(4 yuan system rules repeat accumulate code simulation program, H is a matrix structure)

本程序是对V-BLAST系统及其检测算法的仿真，可采用BPSK,QPSK,16QAM,64QAM调制。检测算法为ML，MMSE,ZF,以及采用迫零的连续干扰消除检测算法。(V-blast ml mmse zf)

用快速傅立葉轉換來求出訊號頻譜的練習過程，並舉一個實例:用FFT來算方形孔徑的遠場繞射(Exercises of the signal spectrum is obtained using a fast Fourier transform FFT to count the the square aperture far-field diffraction)

matlab使用USB摄像头读取实时图像(Matlab uses a USB camera to read real time images)

Lu decomposition routines in matlab

MATLAB 数字信号处理与应用 清华大学出版社 程序(MATLAB application of digital signal processing and Tsinghua Press)

基于matlab的功率谱分析以及短时傅立叶变换(Matlab based on the power spectrum analysis as well as the short-time Fourier transform)

Matlab script to generate symbolically equation of motion by using Lagrange method.

independent component analysis

This paper presents a novel algorithm of hiding secret messages by applying mathematical lemmas and information theory. The proposed algorithm can hide more information with acceptable embedded rate and achieves requirements of information hiding algorithm and simply information extracting. The main idea is applying modern algebra to solve the information hiding problem in multimedia. In order to prevent some attacks on stganography, hidden initial bits of image data pixels are chosen randomly. The extracted information are achieved without the reference of the original image and extracted keys. The experiment results show that our approach is effective and reliable.