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A SIMPLE BUT USFUL 2D FDTD MATLAB CODE4(USFUL 2D FDTD MATLAB CODE4)

针对电商行业商品做CV分析，指导客户对不同动销属性的SKU做补货策略(Electricity supplier industry commodity CV analysis to guide customers do the different properties of dynamic sales SKU replenishment policy)

SparseArrays map integers to Objects. Unlike a normal array of Objects, there can be gaps in the indices. It is intended to be more efficient than using a HashMap to map Integers to Objects.

用最速下降法求解多维函数的极值 function [x,minf]=minFD(f,x0,var,eps) 目标函数：f 初始点：x0 自变量向量：var 精度：eps 目标函数取最小值时的自变量值：x 目标函数的最小值：minf( With the steepest descent method for solving the multi-dimensional function of the extreme value function [x, minf] = minFD (f, x0, var, eps) target function: f Initial Point: x0 argument vector: var Accuracy: eps target function takes the minimum value of the independent variable values: x minimum target function: minf)

functions usable for waterproof picture ! matlab code

一篇有关TDDLTE的频率同步的文章，介绍了LTE的帧结构，及相关频率同步的方法(An article about the frequency of synchronous TDDLTE article introduces the LTE frame structure, and related method of frequency synchronization)

典型模拟通信系统仿真 增量调制 PST编码 FSK 汉明码(communication system modulation)

block diagram of wcdma system communication

BP PID 控制器程序，基于simulink(a program of BPPID controler based on simulink)

一段关于捷联惯导系统的圆锥误差Matlab仿真程序，(Paragraph on the cone error of SINS Matlab simulation program,)