基于MATLAB的AM调制与解调.pdf
版权申诉
5星 · 超过95%的资源 102 浏览量
2022-07-07
03:49:39
上传
评论 3
收藏 746KB PDF 举报 
.
基于 MATLAB 的 AM 调制与解调
摘要：
主要研究 AM 的调制与解调，通过建立数学模型，运用
MATLAB 进行仿真，得到了AM 已调波的波形图和频谱图。改变
调制系数 m，得到了 AM 调制信号，验证了在振幅调制过程中为
了避免产生过量调幅失真，要求调制系数 m 满足：0<m<1.这一
工程结论，为了滤除解调出来的信号含有的高频分量，运用
MATLAB 的窗体函数设计了 FIR 低通滤波器，从而滤除了高频分
量，使得解调出来的信号还原度提高。
关键字：MATLAB AM 调制 解调
The main research AM modulation and demodulation, by a
mathematical model, using MATLAB simulation, has been AM
modulated wave waveforms and frequency spectrum. Changing the
modulation factor m, to obtain an AM modulated signal in the
amplitude modulation verification process in order to avoid excessive
distortion of amplitude modulation, the modulation index m satisfies
the requirements:. 0 <m <1 conclusion of this project, in order to
filter out of the demodulated signal contains high frequency
components, the use of MATLAB functions designed form FIR
low-pass filter, which filters out high frequency components, making
the demodulated signal reduction degree.
Keywords: MATLAB AM modulation and demodulation
.
剩余15页未读，继续阅读
- 1
- 2
前往页