pi4DQPSK

WalshHadmard code for CDMA system..

费诺编码,用MATLAB仿真平台，实现费诺编码的MATLAB仿真研究。(Connaught coding costs by MATLAB simulation platform, to achieve cost Connaught MATLAB simulation code.)

自己编写的伯德图、尼奎斯特图、根轨迹图的Matlab绘图程序，虽然小、简单，却很实用。便于大家教学中分析习题。(I have written Byrd map, Nyquist diagram, root locus diagram of the Matlab graphics program, although small, simple, very practical. Facilitate the analysis of U.S. teaching exercises.)

this is a matlab program for simple image transmission and reception

说明：  LSB实现图像水印的嵌入与提取。真彩色图像为载体也可以！(LSB implements image watermarking embedding and extraction. True color images can also be used as carriers!)

traditional otsu threshold algorithm imlementation used in image processing

FIR滤波器设计中的凯撒窗函数设计，最后有对应系数产生(FIR filter design in the design of the Kaiser window function, and finally there are the corresponding coefficients have)

ALOHA算法的仿真，对于算法的过程用mutlab进行了仿真(Frame slot ALOHA algorithm simulation)

基于状态空间模型的预测控制程序，参考了钱积新的《预测控制》(Predictive control program based on state space model, refer to the Qian Jixin’ s predictive control )

船舶AIS轨迹提取，作出船舶AIS轨迹图。在此基础上，实现基于空间相似距离的K均值轨迹聚类。算法可以自定义轨迹聚类初始轨迹或者由程序随机生成初始轨迹，采用迭代的方法直到确定最终的聚类中心。(The extraction of ship AIS trajectory, make ship AIS trajectories. On this basis, to achieve similar K mean trajectory clustering based on distance space. You can customize the initial trajectory trajectory clustering algorithm or randomly generated by the program initial trajectory, iterative method was used to determine the cluster center until the end. )