LDPC_code_principle

to find the pupil radius using similarity based approach.

一个关于卡尔曼滤波的程序，自己编的，希望对初学matlab的同学有用(A Kalman filter program, compiled hope Matlab beginner students)

采用matlab程序，运行时读取截面尺寸及钢筋布置等，计算钢筋混凝土截面承载能力(Matlab program, read the section size and reinforcement layout runtime to calculate the bearing capacity of reinforced concrete section)

最后的测试程序，得出文本检索的正确率和召回率(In the end, the cosine similarity of texts is used to measure the similarity between the query and documents. The data comparison indicates that this algorithm has well experimental results. Moreover, it gets the advantage over the classic LSA retrieval algorithm in precision and operational efficiency.)

说明：  一个用matlab编写的粒子群优化算法源程序(A written using matlab source PSO)

A星号算法求最短路径，不同于传统的最短路径算法，迪杰斯特拉和弗洛伊德算法(A star algorithms for the shortest path )

模拟退火算法——组合优化 模拟退火算法主要用于解决组和优化问题，它是模拟物理中晶体物质的退火过程而开发的一种优化算法。在对固体物质进行模拟退火处理时，通常先将它加温熔化，使其中的粒子可自由运动，然后随着温度的逐渐下降，粒子也逐渐形成了低能态的晶格。若在凝结点附近的温度下降速率足够慢，则固体物质一定会形成最低能态的基态。 对于组合优化问题来说，它也有这样的类似过程。组合优化问题解空间中的每一点都代表一个具有不同目标函数值的解。所谓优化，就是在解空间中寻找目标函数最小（大）解的过程。若把目标函数看成能量函数，某一控制参数视为温度 T，解空间当作形态空间，那么寻找基态的过程也就是求目标函数极小值的优化过程。 (Simulated annealing algorithm- combinatorial optimization Simulated annealing algorithm used to solve optimization problems and the group, it is the physical simulation of the crystal material in the annealing process and the development of an optimization algorithm. Solid substances in the simulated annealing process, it is usually heated it first melts, so that the particles are free to exercise, then gradually decreased as the temperature of the particles gradually formed a lower state of the lattice. If the temperature drops near the condensation rate slow enough, the solids will form the lowest energy state of the ground state. For combinatorial optimization problems, it also has such a similar process. Combinatorial optimization problem the solution space of each point represents a different objective function value of the solution. The so-called optimization, is in the solution space to find the minimum objective function (large) solution process. If the objective function a)

遗传算法程序，运行环境为MATLAB，可移植性非常好。程序本身不存在错误。(Genetic algorithms program, run the environment for MATLAB, portability is very good. Process itself does not exist error.)

一个本科毕业设计，关键是有源码。内容为ofdm系统仿真，包括设计方案，仿真参数设置等。(A graduation project, the key is a source. Content ofdm system simulation, including the design, simulation and parameter setting.)

几个关于阵列天线的仿真程序，运行环境为matlab,需要用到阵列信号处理工具箱，运行极了一看见结果。(Several on the antenna array simulation program, operating environment for matlab, need to resort to array signal processing toolbox, running great to see the results of one.)