| 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.最后对两种调制方式进行了初步比较. |
| 关键词: 跳频通信,瑞利衰落,高斯滤波最小频移键控,Viterbi算法 |
| DOI：10.3969/j.issn.1001-893X. |
| Revised:September 12, 2001 |
| 基金项目: |
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| Application and Performance Simulation of MFSK and GMSK Modulations in Short Wave Frequency-hopping Spread-spectrum Communication System |
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| Abstract: |
| 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. |
| Key words: Frequency-hopping spread-spectrum communication,Rayleigh fading,GMSK,Viterbi algorithm |
