2025 届毕业设计说明书 基于 MATLAB 的 16QAM 通信系统仿真 院、 部: 电气与信息工程学院 学生姓名: 李 和 指导老师: 贾雅琼 职称 副教授 专 业: 通信工程 班 级: 通信 1001 班 完成时间: 2014-5- 20 摘 要随着现在的通信技术的飞速进展,特别是移动通信技术,因频谱资源的限制, 传统的通信系统容量开始不能满足目前用户需求,因此通信技术专家越来越关注频带利用率的问题。如何提高频谱利用率以及高功率谱密度是我们追求的目标。而正交振幅调制(Quadrature Amplitude Modulation,QAM)是一种振幅和相位联合键控,由于高频谱利用率和高功率谱密度等优点,它已成为了大容量数字微波、宽带无线接入和无线视频通信的一种重要技术方案。本论文先介绍了 16 进制的正交振幅调制信号(16QAM)的调制解调原理,再利用MATLAB 平台构建完整的 16QAM 通信系统,实现 16QAM 的调制解调系统的仿真,以及分析该系统性能。以此证明 16QAM 调制技术相对其他调制方式的优点。关键词:调制解调;正交振幅调制;MATLAB 仿真ABSTRACT With the rapid development of modern communication technology, especially mobile communications technology, the capacity of traditional communication systems can not meet the requirements of the current user. And because of the limited spectrum resource, the problem of bandwidth efficiency is growing concerned of experts in the field of communications. So finding the way that how to improve the spectrum efficiency and high power spectral density is our goal. Quadrature amplitude modulation (QAM) with its high spectral efficiency and high power spectral density and other advantages, becomes important to those communication application that include the large-capacity digital microwave technology solutions, broadband wireless access and wireless video communications, and so on.This article describes the principle of modulation and demodulation of 16QAM, then builds a complete communication system of 16QAM based on MATLAB, which is to realize the simulat...