imageEncryption-master

OFDM原理matlab图形界面演示程序，本人原创。 OFDMDEMO Demonstrates OFDM Communication System Function: to demonstrate the primary principle of OFDM system To start the demo type "OFDMDEMO" in Matlab. For more information press "help" button ofdmsimple.m is the key code of ofdm simulation(OFDM Communication System Demonstration Program.)

dpcm编码，是一种传统的编码方法，就是预测性编码。(dpcm is)

wimax中的turbo码的实现，即CTC码，循环卷积turbo码(the achieve of the turbo in wimax)

是梳状滤波器，简单整系数的50Hz工频梳状滤波器，吉布斯振荡非常小。(The comb filter simple integer coefficients 50Hz frequency comb filter, Gibbs oscillations very small.)

this is a mdl file of matlab to Ideal Switch use in network

使用matlab画圆，对图傅里叶变化，零频移中，反变换实验(test fft and ifft)

Orthogonal frequency division multiplexing (OFDM) is becoming the chosen modulation technique for wireless communications. OFDM can provide large data rates with sufficient robustness to radio channel impairments. Many research centers in the world have specialized teams working in the optimization of OFDM for countless applications. Here, at the Georgia Institute of Technology, one of such teams is in Dr. M. A. Ingram’s Smart Antenna Research Laboratory (SARL), a part of the Georgia Center for Advanced Telecommunications Technology (GCATT). The purpose of this report is to provide Matlab code to simulate the basic processing involved in the generation and reception of an OFDM signal in a physical channel and to provide a description of each of the steps involved. For this purpose, we shall use, as an example, one of the proposed OFDM signals of the Digital Video Broadcasting (DVB) standard for the European terrestrial digital television (DTV) service.

说明：  计算高斯-勒让德求积，直接调用函数即可。(Calculate the Gauss-Legendre quadrature.)

说明：  通信原理在matlab上的实现，关于调制解调系统的各种部分(On communication theory in matlab implementation, on the various parts of modulation and demodulation system)

This PPT is an introduction to matlab programing