simulation

升余弦滚降滤波器，主要完成 Generate coefficients of Nyquist filter(Raised Cosine filter, mainly to complete Generate coefficients of Nyquist filter)

说明：  ENERGY DETECTION SPECTRUM SENSING

A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best-known example of a polyalphabetic cipher, though it is a simplified special case.Polyalphabetic substitution ciphers are useful because the are less easily broken by frequency analysis, however if an attacker knows for instance that the message has a period n, then he simply can individually frequency analyze each cipher alphabet. The number of letters encrypted before a polyalphabetic substitution cipher returns to its first cipher alphabet is called its period. The larger the period, the stronger the cipher. Of course, this method of encryption is certainly not secure by any definition and should not be applied to any real-life scenarios.

To calculate gravitation field between moon and earth using charge simulation methods

循环谱工具箱，包括二阶循环累积量，循环谱估计的FAM算法(Cyclic spectrum toolbox, including the second order cyclic cumulant, FAM algorithm for spectral estimation cycle)

clc close all clear all I=imread( desert.jpg ) [r c]=size(I) bs=16 Block Size (8x8) nob=(r/bs)*(c/bs) Total number of 8x8 Blocks Dividing the image into 8x8 Blocks kk=0 for i=1:(r/bs) for j=1:(c/bs) Block(:,:,kk+j)=I((bs*(i-1)+1:bs*(i-1)+bs),(bs*(j-1)+1:bs*(j-1)+bs)) end kk=kk+(r/bs) end Accessing individual Blocks figure imshow(Block(:,9,1)) This shows u the fist 8x8 Block in a figure window figure imshow(Block(:,:,2))

This is the matlab code of filter bank design.

基于MATLAB,简述了矩阵分析方法绘制根轨迹-,matlab,matlab例程 /matlab(Based on MATLAB, outlines the mapping method of matrix analysis root-locus-, Matlab, Matlab routines/Matlab)

matlab 电梯工作原理动画模拟 m文件解压即可使用(matlab elevator animation simulation)

说明：  卷积码的仿真，包含多种译码算法，例如维特比，MAP等。(It's about convolutional code simulation, including a variety of decoding algorithms.)