chap5

说明：  This is a test upload thingo.

关于高效的C++编程的电子书，内容很详细，对于C++学习很有用。(About efficient C++ programming e-books, the content is very detailed, very useful for C++ learning.)

this the code for user manager-this is the code for user manager

三角分解法亦称因子分解法，由消元法演变而来的解线性方程组的一类方法。设方程组的矩阵形式为Ax=b，三角分解法就是将系数矩阵A分解为一个下三角矩阵L和一个上三角矩阵U之积：A=LU，然后依次解两个三角形方程组Ly=b和Ux=y，而得到原方程组的解，例如，杜利特尔分解法、乔莱斯基分解法等就是三角分解法(The triangular decomposition method, also called factor decomposition method, is a kind of method of solving the linear equation group by the evolution of the elimination method. A form of matrix equations Ax=b, triangular decomposition is the coefficient matrix A is decomposed into a lower triangular matrix and an upper triangular matrix L U product: A=LU, followed by the solution of two triangular equations Ly=b and Ux=y, and get the original equations, for example, Doolittle method, Jo Lessky decomposition is a triangular decomposition method)

说明：  串口源码，代码附带说明很详细，新手可参考练习(Serial source code, code with detailed instructions, novice can refer to the exercise)

说明：  IEEE10机39节点PSASP机电仿真模型，模型参数与标准参数一致，可扩展性强(10 machine 39 node system data)

学习MIMO的入门课件！能够很快的了解MIMO的原理！写的很详细！(MIMO-entry learning courseware! Be able to quickly understand the principle of MIMO! Written in great detail!)

一些 北大的模式识别课程课件 ，希望对做模式识别的同仁们有所帮助-Some pattern recognition sharPKUngfu Courseware, and they hope to make pattern recognition colleagues help

example of recursive algorithm

说明：  包括跳频通信系统的整个工作流程，调制，跳频，解跳，解调。 其中，调制采用MSK调制方式，解调采用复差分解调方式。(Including the whole work flow of frequency hopping communication system, modulation, frequency hopping, de hopping, demodulation. Among them, MSK modulation is used for modulation and complex differential demodulation is used for demodulation.)