criptografia.3105

有限差分法 微分方程和积分微分方程数值解的方法。基本思想是把连续的定解区域用有限个离散点构成的网格来代替， 这些离散点称作网格的节点；把连续定解区域上的连续变量的函数用在网格上定义的离散变量函数来近似；把原方程和定解条件中的微商用差商来近似， 积分用积分和来近似，于是原微分方程和定解条件就近似地代之以代数方程组，即有限差分方程组 ， 解此方程组就可以得到原问题在离散点上的近似解。然后再利用插值方法便可以从离散解得到定解问题在整个区域上的近似解。 (Finite Difference Method Numerical solution of differential equations and integro-differential equation approach. The basic idea is to set a continuous solution of the region with a finite number of discrete points instead of a grid consisting of, these discrete points called grid nodes the solution of a continuous area on a given function of continuous variables used in the definition of discrete grid variable function approximation the original equation and boundary conditions in the micro-business operators to approximate differential, integral with the points and to approximate, so the original differential equations and boundary conditions are replaced by algebraic equations near Side, that is, finite difference equations , solve this equation group can get the original problem in discrete points on the approximate solution. And then using interpolation methods can be determined from the discrete solution of the problem solution of the approximate solution on the entire region)

mimo－ofdm系统仿真，matlab源程序(mimo- ofdm system simulation, Matlab source)

ldpc的编码和译码方法，译码我验证过了，都是对的，包括wbf和bf译码方法，编码方法包括四种不同的编码方法(LDPC encoding and decoding method, decoding I verified, all is right, including any WBF and bf decoding method, the encoding methods include four different coding methods )

基于MATLAB GUI的成绩查询系统，可以计算学生的平均成绩，查询名词，及格人数等。 m文件(Query results system based on MATLAB GUI that can calculate the average scores of students, the query terms, and the number of passes, etc.m file.)

With HS conjugate gradient method for solving unconstrained problem

Block base DCT data hiding and recovery of secrete image.

基于Googlechar 的图表实现，可以运行的(basic on Googl char，it can work !with Chars)

matlab image coding for watermarking image

GMSK modultion source code

induction motor simulation for performing modern control and other controllers