GMSK通信短波电台带内干扰抑制技术研究  

Research on GMSK Communication Shortwave Radio by Intraband Interference Suppression Technology

作　　者：崔立东[1] 谭志良[1] 毕军建[1] 陈立伟[1] 

机构地区：[1]军械工程学院静电与电磁防护研究所,河北石家庄050003

出　　处：《无线电工程》2015年第1期54-57,共4页Radio Engineering

摘　　要：针对通信电台易受电磁干扰的问题,采用了基于自适应干扰对消的干扰抑制方法来解决带内干扰。主要介绍了自适应干扰对消原理以及高斯最小频移键控(GMSK)调制原理,通过在simulink下建立短波跳频电台模型以及加入对消器的电台模型,仿真中改变干扰类型,得出了对消前后白噪声、定频干扰和梳状干扰在不同信噪比下的误码率。仿真结果表明,梳状干扰对通信性能的影响较为明显,定频干扰和白噪声干扰次之;在加入自适应对消器后,干扰抑制效果显著。In order to solve the electromagnetic interference happened in communication radio, the interference suppression method based on adaptive interference cancellation is used to suppress the intraband interference.This paper introduces the principle of adaptive interference cancellation and Gaussian minimum frequency.shift keying （GMSK）.Based on simulink,the frequency hopping radio model and the radio model containing AIC are set up. In the simulation, the BER under different SNR of white noise, constant frequency interference and comb interference before or after the cancellation is obtained by changing interference types. The simulation results show that the communication performance is vulnerable to comb interference,and the interference effect is more obvious than the constant frequency interference and white noise.It is effective for interference suppression after AIC adding to the simulation.

关 键 词：GMSK调制 自适应干扰对消 SIMULINK仿真 带内干扰 

分 类 号：O441.4[理学—电磁学]