digital comm

matlab扩展编程：增加了matlab的数据结构和编程技巧，c调用matlab，matlab访问硬件系统，matlab录音工具，matlab的语音识别系统等(matlab expand programming: an increase of matlab data structures and programming techniques, c call matlab, matlab access to hardware system, matlab recording tools, matlab voice recognition systems, etc.)

matlab PID 刘金琨《智能控制的MATLAB实现》(matlab PID)

用于在配电网状态估计之前对一定数量的测量装置在配电网中进行最优安装。(On a number of measuring devices used for state estimation of the distribution network in the distribution network for optimal installation.)

说明：  该程序给出了cohesive单元的刚度矩阵及其在有限元程序中的实现方法。(This program gives the stiffness matrix of the cohesive element and its realization method in the finite element program.)

This code is a special calculation between DEA and MCDA/ PROMETHEE II.

菲涅尔区聚焦多波束天线空间谱估计性能分析(Fresnel zone focusing spectrum estimation performance of multi-beam antenna spatial analysis)

this code in used in neural network mlp with back propagation training algorithm and geradian descends algorithm for optimization.in some of this codes I used full propagation algorithm or mlp one layer or two layer with different activation function.this code can be use for prediction or control system by useing neural networks.

Reconstruction of magnetic resonance images from data not falling on a Cartesian grid is a Fourier inversion problem typically solved using convolution interpolation, also known as gridding. Gridding is simple and robust and has parameters, the grid oversampling ratio and the kernel width, that can be used to trade accuracy for computational memory and time reductions. We have found that significant reductions in computation memory and time can be obtained while maintaining high accuracy by using a minimal oversampling ratio, from 1.125 to 1.375, instead of the typically employed grid oversampling ratio of two. When using a minimal oversampling ratio, appropriate design of the convolution kernel is important for maintaining high accuracy

机械动力学系统中力学模型分析，求得它固有频率，振型，主坐标。(Mechanical model analysis, mechanical dynamic system to obtain its natural frequency, mode shapes, principal coordinates.)

基于PSO（粒子群算法）的列车速度优化，matlab实现。(Train speed optimization based on PSO (particle swarm optimization) is realized by matlab.)