基于Matlab的AM通信系统仿真

分析当前通信类课程实验教学存在的问题，提出采用Matlab仿真来弥补实验室实验设备等的不足。利用Mat—lab的Simulink工具箱建立AM系统的两种仿真模型，包括基于相干解调和包络检波的AM仿真模型，详细叙述模块参数的设置，分析仿真结果，仿真结果与理论结果一致。创新之处在于AM系统的仿真采用两种方法，仿真模型简单，充分展示了Simulink工具箱仿真通信系统的基本方法，为通信系统的仿真研究指出了一个方法。

Simulation of AM communication system based on Matlab

The problems existing in the experiment teaching of communication course are analyzed.The Matlab simulation is put forward to make up the lack of experiment equipments in laboratory.The two simulation models based on coherent demodulator and envelope detection were set up for the AM communication system with Matlab’s Simulink toolbox.The setting-up criteria of simulation parameters are described in detail.The analysis of simulation results indicate that the simulation results are identical to theoretical ones.The main innovation points of this paper are as follows: AM system comprises two simulation methods,the simulation models are very simple,the simulation methods of the communication system established with Simulink toolbox are fully presented,and an approach is proposed for simulation research of communication systems.