GMSK跳频通信跟踪干扰性能分析  

Performance analysis of follower jamming in GMSK frequency-hopping communication

作　　者：闫云斌[1] 全厚德[1] 崔佩璋[1] 

机构地区：[1]军械工程学院光学与电子工程系,河北石家庄050003

出　　处：《电子技术应用》2012年第5期109-112,共4页Application of Electronic Technique

摘　　要：对FH-GMSK(Frequency Hopping-Gaussian Filtered Minimum Shift Keying)通信系统进行了研究,分析了FH-GMSK通信系统的基本原理和系统模型;对跳频通信中的跟踪干扰进行了研究;在Simulink下搭建了FH-GMSK通信系统和跟踪干扰模块;分析了在不同时间延迟和不同信噪比下跟踪干扰对FH-GMSK通信系统的误码率性能。仿真结果表明,在信噪比一定的情况下,时间延迟为零时,跟踪干扰效能最佳,随着时间延迟的增加,误码率逐渐下降,当时间延迟大于跳频驻留时间时,干扰失效;而当时间延迟一定时,随着信噪比的增加,误码率始终保持在0.3以上,给FH-GMSK通信系统造成极大的威胁。In this paper, The FH-GMSK communication system is researched, the basic principle and the model of FH-GMSK communication system is analyzed; The modulation mode of follower jamming which bring to the FH-GMSK communication system is studied,the FH-GMSK communication system and follower jamming module are simulated by the Simulink; The bit error rate in different time delay and the different signal-to-noise ratio （SNR）of follower jamming to FH-GMSK communication system is ana- lyzed; The simulation results show that, when the SNR is given, the efficiency of follower jamming is best as the time delay is ze- ro, bit error rate is gradually decreased with the increase of time delay, the follower jamming is failed when the time delay greater than the residence time of the Frequency hoping ; When the time delay is given, the bit error rate is above the 0.3 with the in- crease of the SNR, which can bring big threaten to the FH-GMSK communication system.

关 键 词：跳频通信 GMSK调制 SIMULINK仿真 跟踪干扰 时间延迟 误码率 

分 类 号：TN914.3[电子电信—通信与信息系统]