基于AM调制下语音信号传输原理分析研究
Analysis of Research on Voice Signal Transmission Based on AM Modulation
王昕欣 1栾奕霏 1赵笛言 1陈思含 1于洪仕1
作者信息
- 1. 辽宁工程技术大学电子与信息工程学院，辽宁省兴城市 125100
- 折叠
摘要
幅度调制（AM）作为模拟通信的基础技术，长期以来在语音信号传输中发挥着关键作用。随着通信技术的迭代，AM 调制的核心原理仍是理解现代通信的重要基础。本文以幅度调制（AM）技术为研究对象，探讨模拟通信系统中语音信号的调制与解调基本原理。通过对AM调制的数学模型、波形特性、调制深度等核心概念进行分析，阐述了模拟信号如何"搭载"在高频载波上实现远距离传输。在此理论基础上，本文进一步引入MATLAB仿真平台，对AM系统在引入高斯白噪声（AWGN）复杂信道下的传输过程进行了抗噪性能的定量仿真与验证，并补充了系统功率分配的量化分析，为模拟通信技术的工程应用提供了数据支撑。
Abstract
As a fundamental technology in analog communications, amplitude modulation (AM) has long played a key role in voice signal transmission. Despite the evolution of communication technologies, the core principles of AM modulation remain an important foundation for understanding modern communications. Taking amplitude modulation (AM) technology as the research object, this paper discusses the basic principles of modulation and demodulation of voice signals in analog communication systems. By analyzing core concepts such as the mathematical model, waveform characteristics, and modulation depth of AM modulation, this paper elaborates on how analog signals are "carried" by high-frequency carriers to achieve long-distance transmission.Based on the aforementioned theory, this paper further adopts the MATLAB simulation platform to conduct quantitative simulation and verification of the anti-noise performance of the AM system during transmission over complex channels with additive white Gaussian noise (AWGN). In addition, a quantitative analysis of system power allocation is supplemented, providing data support for the engineering application of analog communication technology.关键词
通信与信息系统/幅度调制（AM）/载波/语音信号传输Key words
Communication and Information Systems/Amplitude Modulation (AM)/Carrier Wave/Voice Signal Transmission引用本文复制引用
王昕欣,栾奕霏,赵笛言,陈思含,于洪仕.基于AM调制下语音信号传输原理分析研究[EB/OL].(2026-07-03)[2026-07-05].http://www.paper.edu.cn/releasepaper/content/202607-2.学科分类
通信
