K-means

pca程序编辑的源码 选择性的使用 注意相关条件(matlab code about programmer)

通过学习LDPC编译码原理，编写了LDPC码的编译码程序。通过此程序可以更好的实现LDPC码的仿真(in this passage we have write the program of edcoded and decoded of LDPC code.through it we can undersatand LDPC more.)

说明：  在MATLAB环境下编的基于邻居搜索的动态差分协同进化代码(Neighbor search based on dynamic differential co-evolution code)

由于硬判决在判决过程中将接收直接判决为[1 0],而损失了相应的近似信息，导致了接收信息在某种意义上的浪费。软判决将接收电平量化，尽可能保存相应的信息，故可以提高译码性能。(soft descision decoding)

说明：  awgn 信道下 ldpc与FQPSK的串行级联系统，(AWGN channel，serially concatenated FQPSK modulation system with ldpc)

matllab有限元函数求值程序关于3D四面体网格(a program library which evaluates a finite element function defined on a 3D tetrahedral mesh)

说明：  基于matlab的模块化通信系统仿真设计，以及实验报告(this is a design of engineer system modulation based on matlab2012b)

说明：  This assignment will help u understand matlab image processing

对于初学者很有用的EMD程序。供大家参考。(EMD useful for the beginner process. For your reference.)

3D FDTD程序中加入平面波传播。确保它从一侧传出，通过空间，且在另一侧消失。(3 D FDTD program to join plane wave propagation. Ensure that it spread from one side, through the space, and on the other side disappear.)