two_demo_2

正交频分复用源程序，交含逆快速傅立叶变换，ISI，傅立叶变换(main OFDM)

精通matlab6.5(北航 张志涌),pdf格式，学习matlab经典书籍之一。(proficient matlab6.5 (Beijing University of Aeronautics and Astronautics Zhang Yong), pdf format, Matlab learning one of the classic books.)

this file gives the parameters of a model estimated from given data. this is usfull in estimationa and forecasting

matlab教程 拉格朗日插值，本程序使用matlab开发环境实现了数值方法的高斯插值内容，方便好用，将所需插值数据加入，即可实现高斯插值(Lagrange interpolation, the program uses matlab development environment to achieve a numerical method of Gaussian interpolation content, easy to use, add the required data interpolation, Gaussian interpolation can be realized)

该文件夹为空时块码－卷积码级联系统的仿真程序，天线配置为2发2收。内附主要程序的用途说明.(folder to the space-time block codes-Convolutional Codes cascade system simulation program, antenna configuration for the two 2 admission. Containing the main proceedings Description.)

matlab在科学计算上的应用教程，适用于初学者(matlab tutorial on scientific computing for beginners)

Floyd算法又称为弗洛伊德算法，插点法，是一种用于寻找给定的加权图中顶点间最短路径的算法。 (Floyd algorithm, also known as Floyd algorithm, insertion point method, is used to find a given vertex-weighted graph shortest path algorithm.)

生成多点地震动，多点激励，地震动的空间变异性。(spatial variation of earthquake ground motion，non-uniform excitation。)

Fourier Transform + Gaussian

说明：  双音频按键识别 背景： 打电话拨号时，每次按键会发出不同的声音，这些声音实际上是由一些固定频率的正弦信号合成的。因为每个按键声音包含两个不同频率的正弦信号，因此也被称为“双音频”信号，简记为DTMF。这相当于是对不同键位用‘音频’进行了编码，如同计算机领域中用数字0和1对处理对象（包括键盘）进行编码。(Two-tone buttons identify Background: When you call dial, each key emits different sounds, which is actually made up of some fixed frequency sinusoidal signal synthesis. Because the sound of each key contains two sinusoidal signals of different frequencies, it is also known as &quot two-tone&quot signal, abbreviated as DTMF. This is equivalent to different keys using the ' audio' encoded, as the computer industry with the numbers 0 and 1 pair of processing object (including the keyboard) to be encoded.)