shuangjidian

本文件是用MATLAB编写的小型局域网模拟软件，在MATLAB环境下可实现局域网功能仿真。非常实用，适合初学者。(This document is written in a small LAN with MATLAB simulation software, in the MATLAB environment enables LAN functional simulation. Is very useful for beginners.)

整数锁相环的malab 建模与仿真程序 用于行为及的验证与仿真 对PLL建模有好处(simulink of integer PLL simulation model and testbench )

单相光伏并网发电系统电压前馈控制和有源频率偏移（AFD）孤岛检测法的simulink仿真模型，初步实现了并网电流与电网电压的同频同相，AFD孤岛检测方法采用S函数给出，检测功能基本实现。(Single-phase grid-connected PV system voltage feedforward control and active frequency offset (AFD) simulink simulation model islanding detection method, the initial realization of grid current and the grid voltage of the same frequency and phase, AFD islanding detection method using the S function to out detection realized.)

能够对于奇异值的计算matlab代码，找了好久呢。。(Singular value to the calculation of the matlab code, then look for a long time. .)

进行LTE 信道估计仿真器，对LTE进行信道估计，在LTE系统中是一个很重要的部分，是做链路级仿真必要步骤。(LTE channel estimater)

用matlab编写的基于PCA的人脸识别算法，包含图片库，可以直接运行，找出图片库中与测试图片相匹配的图片。(Matlab prepared with PCA-based face recognition algorithms, including image libraries, can be run to identify and test gallery picture of the picture to match.)

对使用高阶累积量（统计量）进行调制识别进行了仿真，包含仿真参考的经典文献和汇报用的PPT。后期我对程序进行了改进，已完美达到文献效果，但PPT中没来得及改，请注意。有极强参考价值(Order cumulants (statistics) modulation recognition simulation contains the simulation reference classic literature and reporting with PPT. The late I program improvement, has the perfect reach literature effect, but did not have time to change, PPT Please note. Have a strong reference value)

MSSESPRIT s matlab program(MSSesprit s matlab program)

图片印刷字符的识别（可识别多种字体） 将Matlab工作空间路径设置为本文件夹 在Matlab命令窗口内输入： numCongnition( able1/01.jpg ) 通过改图片来对不同的图进行处理，其中able1,able2,able3三个文件夹分别对应三种字体 命令窗口输出要识别的字符，并且自动弹出中间处理过程窗口 也可以运行： num = pretreat( able1/01.jpg ) imshow(num) 直接得到预处理后的图片 再键入： getNumber(num) 得到字符输出 (Set the Matlab workspace path to this folder In the Matlab command window input: NumCongnition ( able1/01. JPG) Through change pictures to deal with different figure, including able1, able2, able3 three folders corresponding to three kinds of fonts Command window output to identify characters, and automatically process among popup Windows Can run: Num = pretreat ( able1/01. JPG) Imshow (num) Directly after preprocessing of images Type: GetNumber (num) Get the output character)

msk一种恒包络信号，本源码用多种方案实现MSK信号的调制和解调(msk a constant envelope signal, the source with a variety of programs to achieve the modulation and demodulation of MSK)