基于 Matlab/m 文件的 GMSK 调制解调系统仿真实
现
学 生 姓 名：朱 超 指 导 老 师：吴 志 敏
摘 要：随着现代通信技术的发展，移动通信技术得到快速发展，许多优秀的调
制技术应运而生，其中 GMSK 技术是无线通信中比较突出的一种二进制调制方
法，它具有良好的频谱特性和较好的抗干扰性能，特别适用于无线通信和卫星
通信，目前，很多通信标准都采用了 GMSK 技术，例如，GSM，DECT 等。在
本论文中，首先介绍了 GMSK 的基础 MSK 的一般原理，接着对 GMSK 的调制
原理和几种调制方法进行了阐述，并用 MATLAB 对 GMSK 的调制解调进行了
仿真，得到了时域波形，功率谱曲线，信号眼图和误码率曲线等重要数据。
关键词：MATLAB,GMSK,调制,解调,仿真
Abstract：Along with the development of the communication technology, the mobile
communication technology has been developing rapidly. A lot of excellent modulation
technology has emerged as the times require, the GMSK is one of the most
outstanding technology in radio communication. It is especially used in radio and
satellite communication for its nice spectrum characteristic and anti-jamming
capability. At present , many communication system has employed the GMSK, for
instance, the GSM, DECT. In this paper , the MSK which is the base of GMSK was
introduced firstly, and then the modulation principle and methods of GMSK was
analyzed, and the several differentially detection methods of GMSK was studied and
compared emphatically. Finally, the process of the modulation and demodulation of
the GMSK was emulated by MATLAB and the time waves, spectrum curves,
eyediagrams and bit error rate curve was made.
Keywords: MATLAB, GMSK, modulation, demodulation, simulation
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