基于 Clarke-Jakes 模型的 QPSK 与 16QAM 调制性能对比研究
A Comparative Study on the Modulation Performance of QPSK and 16QAM Based on the Clarke-Jakes Model
范磊 1高绮蔓 1边廷玥1
作者信息
- 1. 辽宁工程技术大学电子与信息工程学院，辽宁省葫芦岛市 125100
- 折叠
摘要
本文基于Clarke-Jakes模型构建了瑞利衰落信道仿真平台，对比分析了QPSK与16QAM 在加性高斯白噪声（AWGN）信道和瑞利衰落信道中的误码率（BER）性能。通过推导 Clarke-Jakes 模型的信道冲激响应，结合理论误码率公式，利用 Matlab 仿真验证了两种调制方式的抗噪声与抗衰落特性。结果表明：QPSK 抗噪声与抗衰落性能更优，适用于低信噪比场景；16QAM 频谱效率更高，但对噪声和衰落更敏感，需在高信噪比环境中发挥优势。研究为实际通信系统中调制方式的动态选择提供了仿真依据，对优化自适应调制策略具有理论与工程价值。
Abstract
Based on the Clarke-Jakes model, this paper constructs a simulation platform for Rayleigh fading channels, and compares and analyzes the bit error rate (BER) performance of QPSK and 16QAM in additive white Gaussian noise (AWGN) channels and Rayleigh fading channels. By deriving the channel impulse response of the Clarke-Jakes model and combining with the theoretical BER formula, the anti-noise and anti-fading characteristics of the two modulation methods are verified through Matlab simulation. The results show that QPSK has better anti-noise and anti-fading performance and is suitable for low signal-to-noise ratio scenarios; 16QAM has higher spectral efficiency, but is more sensitive to noise and fading, and needs to exert its advantages in high signal-to-noise ratio environments. The research provides a simulation basis for the dynamic selection of modulation methods in actual communication systems and has theoretical and engineering value for optimizing adaptive modulation strategies.关键词
Clarke-Jakes模型/瑞利衰落/QPSK/16QAM/BERKey words
Clarke-Jakes Model/Rayleigh fading/QPSK/16QAM/BER引用本文复制引用
范磊,高绮蔓,边廷玥.基于 Clarke-Jakes 模型的 QPSK 与 16QAM 调制性能对比研究[EB/OL].(2025-07-30)[2026-04-13].http://www.paper.edu.cn/releasepaper/content/202507-45.学科分类
通信/无线通信
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