基于通信信道的数字传感信号正交幅度调制技术仿真研究  

Simulation of digital sensor signal QAM technology based on communication channel

作　　者：毕卫红[1] 祝亚男[1] 张力方[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《燕山大学学报》2009年第4期319-322,362,共5页Journal of Yanshan University

摘　　要：介绍了数字传感信号接入通信网时的正交幅度调制、解调和判决原理,在Optisystem7.0环境下设计并对改进的正交幅度调制系统进行了建模与仿真,观察并分析了原始输入信号、调制信号、解调信号,验证了数字传感信号在通信信道中传输的可行性。In this paper, the principle of QAM modulation, demodulation and decision is introduced. The powerful simulation ruction of the optisystem software is described. The simulation model of the QAM technology based on the Optisystem is presented according to the above principle. The original input signal, the modulation of the signal, the demodulation of the signal, the QAM modulate system constellation graph and the signal frequency of QAM signal after demodulate were analyzed and observed, and the possibility of transmitting digital sensor signal in communication channel was verifid.

关 键 词：正交幅度调制 OPTISYSTEM 调制 解调 

分 类 号：TP911.7[自动化与计算机技术]