chaoliu

Encryption algorithms are becoming more necessary to ensure data is securely transmitted over insecure communication channels. FOX is a recently developed algorithm and its structure is based on the already proven IDEA (International Data Encryption Algorithm) cipher. FOX is a symmetric (private key) block cipher. Its top-level structure uses the Lai-Massey scheme and the round functions used in the scheme are substitution permutation networks (SPN). Its flexibility lies in the fact that it can be efficiently implemented in hardware and software. We report some of the first results of implementing the cipher on an FPGA

一个计算角天线的MATLAB代码，已验证无误，适合初学者用！(A MATLAB code for calculating the angle of the antenna has been verified correct, suitable for beginners!)

说明：  数据通道剥离伪码后的载频估计,数据通道剥离伪码后的载波估计问题。对直接序列扩频系统的数据通道，假定接收设备已“完美”地锁定接收信号伪码，并实现了伪码剥离其中，信号幅度、电文、载波多普勒和载波相位均未知。电文的速率为10Hz。由于信源与接收端信号传输时延的不确定性，收到的信号电文是从某个未知时刻开始的。 利用数据文件 估计信号幅度、载波多普勒和载波相位(Data channel after stripping pseudo-code carrier frequency estimation)

说明：  He-Chen-Zhang多相流LBM模型 《Multiphase Lattice Boltzmann Methods Theory and Application》书后代码(Multiphase Lattice Boltzmann Methods Theory and Application)

时间跳变-脉冲位置调试超宽带发射和接收系统(TH-PPM ultra-wideband wireless communication system)

说明：  七单元天线阵DOA估计 clear clc d=1 天线阵元的间距 lma=2 信号中心波长 q1=1*pi/4 q2=1*pi/3 q3=1*pi/6 q4=3*pi/4 四输入信号的方向 A1=[exp(-2*pi*j*d*[0:6]*cos(q1)/lma)] 求阵因子 A2=[exp(-2*pi*j*d*[0:6]*cos(q2)/lma)] A3=[exp(-2*pi*j*d*[0:6]*cos(q3)/lma)] A4=[exp(-2*pi*j*d*[0:6]*cos(q4)/lma)] A=[A1,A2,A3,A4] 得出A矩阵 n=1:1900 v1=.015 四信号的频率 v2=.05 v3=.02 v4=.035 d=[1.3*cos(v1*n) 1*sin(v2(we)

here data is given and estimate using ML estimation in pattern recognition

clear 清除内存变量 clc 清空工作区内容 N = 10 一般取6-18间的偶数，N值越大理论上结果越精确 V =zeros(1,N) 申请存储V(i)的空间(So no water influx curve)

计算器的功能实现程序，该程序一多次仿真通过，健壮好用(There was a new quiz show on television last night, but we were just outside and sitting down to dinner when it came on.)

说明：  时间序列的自回归预测模型，是一个利用前期若干时刻的随机变量的线性组合来描述以后某时刻随机变量的线性回归模型(The autoregressive prediction model of time series is a linear regression model that describes random variables at a later time by using the linear combination of random variables at some earlier time.)