摘要
数字信号的传输方式分为基带传输和带通传输。由于信道的限制,基带信号在很多信道中不能直接传输,所以必须用数字基带信号对载波进行调制,以使信号与信道的特性相匹配。并在接收端通过解调器把带通信号还原成数字基带信号。本文应用MATLAB对通信系统中基本的3种二进制调制过程进行编程和建模仿真。
Digital signal transmission has two modes,the baseband transmission and the waveband transmission.Due to the channel restriction,baseband signal cannot transmit directly in many channels,so it＇s essential to modulate a carrier with the baseband signal in order to make signal and the characteristics of channel matching.The receiver then uses a demodulator to convert the band-pass signal to the baseband signal.This paper focus on three basic binary modulation process in communication system,and programming and modeling simulation had been done with MATLAB.
出处
《软件导刊》
2011年第5期57-59,共3页
Software Guide
