AM系统的建模与仿真  

Modeling and Simulation of AM system

作　　者：吴艳君[1] 

机构地区：[1]菏泽学院物理系

出　　处：《电子技术（上海）》2012年第6期24-25,共2页Electronic Technology

基　　金：山东省高等学校实验技术研究立项项目(NO:S04W138)

摘　　要：利用Simulink软件平台,对幅度调制与解调系统进行建模及仿真分析,验证了包络检波的门限效应,并在给定解调器输入信噪比条件下,对比包络检波和同步相干解调的输出信噪比性能,分析出两种解调器的抗噪声性能。加深了对系统调制和解调过程的认识和理解。Simulink software platform is utilized to model and simulate amplitude modulation and demodulation system. And the threshold effect of envelope detector is verified. Moreover under a given input SNR condition of demodulator the output SNR performance of synchronous coherent demodulation and envelope detection is compared. Then the anti-noise performance of these two demodulators is analyzed out. It can deepen the understanding of the modulation and demodulation process.

关 键 词：AM 包络检波 相干解调 SIMULINK 门限效应 

分 类 号：TN850[电子电信—信息与通信工程]