MFSK和GMSK调制方式在短波跳频通信系统中的应用及性能仿真  

Application and Performance Simulation of MFSK and GMSK Modulations in Short Wave Frequency-hopping Spread-spectrum Communication System

作　　者：王绪发[1] 黄瑞光[1] 

机构地区：[1]华中科技大学电子与信息工程系,湖北武汉430074

出　　处：《电讯技术》2002年第1期110-116,共7页Telecommunication Engineering

摘　　要：本文主要讨论MFSK和GMSK(高斯滤波最小频移键控 )调制方式在短波跳频通信系统中的应用 ,并对其性能进行了数值仿真。对于MFSK调制方式 ,本文重点讨论了将带反馈链路的选择式频率分集和编码技术应用于短波FH MFSK系统对性能的改善 ,并分析当在具有加性高斯噪声的瑞利衰落信道中存在部分频带阻塞时的性能。GMSK具有优良的频谱特性 ,本文仿真了结合Viterbi算法非相干解调方案时跳频系统的性能。In this paper, applications of MFSK and GMSK modulations in short wave frequency-hopping spread-spectrum communication system are discussed, and the performance is simulated. For MFSK, the performance of selective frequency diversity and coding for FH/MFSK system with Rayleigh fading channels and partial band jamming is researched. For GMSK, combined with Viterbi algorithm noncoherent modulation, the performance of frequency-hopping system is simulated. Finally, the performances of the two modulations are compared.

关 键 词：跳频通信 瑞利衰落 高斯滤波最小频移键控 性能 仿真 短波通信 MFSK 调制方式 

分 类 号：TN926.2[电子电信—通信与信息系统] TN914.41[电子电信—信息与通信工程]