关键词: 下边带信号, 上边带信号, 图形用户界面, 脚本程序, 仿真, 调制

Abstract:

This paper analyzes the linear analog modulation principle, and separately uses scripts, Simulink and GUI to simulate the AM modulation system, explains the general simulation process of communication system based on the three methods, and illustrates the three simulation methods characteristics by examples. The results prove that the three methods have both advantages and disadvantages. The script is relatively simple, the method based on the Simulink can reflect the dynamic process, and the method based on GUI has a good demonstration effect. All of them are powerful tools to study and design the communication systems.

Key words: LSB, USB, GUI, script, simulation, modulation