watermark

一、 本程序采用16QAM调制方式，对一串2进制信源进行调制，采用（7，4）循环码对信源做信道编码，用升余弦滚降函数进行基带调制，再调到高频信道；在信道上加入高斯白噪声，运用匹配滤波器解调，画出解调星座图，运用最小欧氏距离译码判决，再对信号进行信道解码，画出采用信道编码技术和不采用信道编码技术的误比特率图。(First, this program uses 16QAM modulation mode, for a string of two binary source is modulated, using (7,4) cyclic code of the source-channel coding to do with a raised cosine roll-off function for base-band modulation, and then transferred to a high frequency channel in the channel by adding Gaussian white noise, the use of matched filter demodulation, demodulation constellation plot, using the minimum Euclidean distance decoding decision, and then right channel signals, decoding, channel coding techniques used to draw and non- channel coding techniques using bit error rate plans.)

通过一个图像序列来创建背景图像，用于背景差分(Through an image sequence to create a background image for the background subtraction)

forward backward power flow

基于泛化自回归的源模型，以及在这个模型基础上的EM算法实现(Generalization based on the source from the regression model, as well as in the model based on EM algorithm)

关于图像隐藏的几个例程。属于matlab图像处理的内容，图像隐藏和提取。(hidden images on several routines. Matlab is the content of image processing, image and extract hidden.)

自己的一个实验,验证频率的采样定理.即采样点数要足够大.(own an experiment to test frequency of the sampling theorem. That sampling points should be powerful enough.)

本程序将时域数据转换为频域（功率谱密度），方便数据的处理和分析。(The program time-domain data is converted to the frequency domain (power spectral density), to facilitate the processing and analysis of data.)

说明：  模拟退火（SA）算法求解旅行商 （TSP）问题MATLAB代码讲解(Simulated annealing (SA) algorithm for traveling salesman (TSP) problem matlab code explanation)

mimo 2*1的仿真程序，和原始的alamouti的论文里的仿真图是一样的(mimo 2* 1 of the simulation program, and the original alamouti s thesis is the same as the simulation map)

案例2 BP神经网络的非线性系统建模-非线性函数拟合(The BP neural network of nonlinear system modeling-nonlinear function fitting)