New-folder-(3)

RSA公钥密码体制的matlab实现，这是密码学的加密算法之一(RSA public-key cryptosystem implementation of matlab, Cryptography This is one of the encryption algorithm)

用matlab语言实现QPSK调制信号产生(using Matlab language QPSK modulation signal generator)

FFT变换后，求取信号的振幅谱和相位谱，(Calculating the amplitude spectrum and phase signal spectrum)

基于普通最小二乘法的ARMA模型谐波频率估计 (Ordinary least squares method based on the ARMA model of harmonic frequency estimation)

无线电通信正交频移键控调制解调程序源码，给出输入数字信息序列，经调制后得到解调结果(QPSK for wireless electronic communication)

对一篇文章中的文字进行比例分析并能求出出现频率最多的字。(Of an article in the proportion of text analysis and to derive a maximum frequency of occurrence of the word.)

关于柯西分布的matlab工具包，包括概率分布函数，反函数等(On the Cauchy distribution matlab toolkit, including the probability distribution function, inverse function, etc.)

关于DFT调制多相综合滤波器组收发器的设计程序 （实部程序）(DFT modulated polyphase filter bank transceiver design program（real part）)

说明：  此程序是2013年全国研究生数学竞赛的D题的折射部分的程序，则会是一个很好地程序，本程序用matlab编写实现。(This program is the 2013 National Graduate Mathematical Contest Problem D refraction part of the process, then there is a good program, this program using matlab implementation.)

数值方法解方程组AX=B（LU分解），过程分3步，首先，分解系数矩阵A=LU，然后，解LY=B，最后再求UX=Y 另一种是直接求解的（2.1）(Numerical method to solve the equations AX = B (LU decomposition), 3 step process, first of all, the decomposition of the coefficient matrix A = LU, then, Xie LY = B, and finally seek UX = Y another directly solving (2.1 ))