基于 MATLAB 的 AM 信号的调制与解调 [摘要]： 本文主要的讨论内容是了解 AM 信号的数学模型及调制方式以及其解调的方法。不同的解调方法在不同的信噪比情况下的解调结果，那种方法更好，作出比较。进行 AM 信号的调制与解调。先从 AM 的调制讨论，讨论它的功能及在现实生活中的运用。其次讨论 AM 的解调，以及一些有关的知识点，以及通过它在通信方面的运用更加深化的了解它。从 AM 信号的数学模型及调制解调方式出发，得出 AM 调制与解调的框图和调制解调波形。利用 MATLAB 编程语言实现对 AM信号的调制与解调，给出不同信噪比情况下的解调结果对比。[关键词]：AM 信号;调制;解调;信噪比 MATLAB. Modulation and demodulation of AM signal based on MATLAB[Abstract]: The main content of this paper is to understand the mathematical model of the AM signal and the modulation and the demodulation method. Demodulation different methods in different circumstances of the demodulation signal to noise ratio the results of methods that better, to make the comparison. Requirement is more than double the sound and the AM signal modulation and demodulation. AM modulation first study of its function and in real life use. AM demodulation followed by research, as well as some related knowledge, as well as through its use of communications more in-depth understanding of it. AM signal from the tone of the mathematical model and the modulation and demodulation methods, the two-tone AM signal to draw a mathematical model and the block diagram of modulation and demodulation and modulation and demodulation waveforms. MATLAB programming language to use to achieve the two-tone AM signal modulation and demodulation, given the different circumstances of the demodulation signal to noise ratio compared the results.[Keywords]: AM signal, Modulation, Demodulation, Noise ratio signal, MATLAB目 录1.绪论................................................
