learning_demo

使用matlab进行系统的超前和滞后校正，以使得所设计系统达到想要的性能。(Matlab systematic use of lead and lag correction, designed to make the system to achieve the desired performance.)

一个外国人写的关于如何快速写作MATLAB程序的方法(Written by a foreigner writing about how fast the method MATLAB program)

自己写的几个小程序，包括冲激函数，阶跃函数，时域采样，恢复，内插等程序。很好用。(Write several small programs, including the impulse function, step function, time domain sampling, recovery, interpolation procedures. Good use.)

包含了802.11a的matlab仿真程序，同时附有原版中英文标准，对了解802.11a无限局域网技术有很好的指导作用。(Includes 802.11a, matlab simulation program, accompanied by original Chinese and English standards, 802.11a wireless LAN technology to understand a very good guide.)

是图像处理中奇异值分解的代码，对图像处理很有用。(Is the singular value decomposition of the image processing code, useful for image processing.)

this file contains some m-files about calculating the fractional fourier transform

LDPC编码的C语言实现。包括校验矩阵，生产矩阵的生成，编码，译码等。(LDPC coding in C language. Including the parity matrix, matrix production generation, encoding, decoding and the like.)

数字图像处理的一个作业，包含理想高通 巴特沃斯高通 高斯高通的频域增强的作业(A digital image processing operations, including the ideal high-pass Butterworth high-pass Gaussian high-pass frequency domain enhancement operation)

向matlab中读入s2p文件的数据。读入的数据格式为freqx[S11 S21 S12 S22](The program read .s2p file into matlab. The data matrix will have a dimension of freqx4. the four columns are [s11 s21 s12 s22].)

describe code for show image extract