3个SLM

是给一个有限长序列补零（可以在前面或后面补零），用Matlab画图比较原序列，前补零序列以及后补零序列(very good)

how to construct the parity check matrix for LDPC codes

说明：  用MATLAB实现了多相滤波器的仿真(Using MATLAB realize the polyphase filter simulation)

matlab实现pso算法 大家看看把 看看能不能用 互相学习(Matlab achieve pso algorithm we can look at the decision to learn from each other can not be used)

均值滤波：把每个像素周围的8个像素来做均值操作，可以平滑图像，速度快，算法简单，但是无法去掉噪声，只能微弱的减弱它。(The mean filtering: 8 pixels around each pixel do mean, you can smooth image, fast and simple algorithm, but can not get rid of the noise, only faint weakened it.)

EM算法的MATLAB实现,EM算法是HMM中用于随机过程模型参数训练的经典算法(the inplement of algorithm EM with MATLAB，the algorithm is a claasical mathod which is used to train the patameter of the HHM model.)

改良的离散余弦变换MDCT,可用于MP3编解码过程中的MDCT使用。(modifed discrete cosine transform)

Damped Gauss-Newton with Armijo rule

理论力学-小球与弹簧块matlab模拟（xqythk.m xqythkfun.m ） (Theoretical Mechanics- small ball and spring block matlab simulation (xqythk.m xqythkfun.m))

通信系统的方针，用matlab编写，qpsk(communication system simulation by matlab,qpsk)