瑞利衰落信道下差分跳频通信系统抗部分频带噪声干扰的性能分析  

Performance analysis of differential frequency hopping system with partial band noise jamming over Rayleigh fading channels

作　　者：陈智[1] 李少谦[1] 董彬虹[1] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,成都610054

出　　处：《高技术通讯》2006年第8期778-783,共6页Chinese High Technology Letters

基　　金：863计划（2003AA12331006）资助项目.

摘　　要：在瑞利衰落信道和部分频带噪声干扰共存的环境下，针对逐符号检测和按序列检测两种信号检测方法，分别就差分跳频通信系统的误符号性能进行了理论分析，同时做出相应的计算机仿真。结果证实，差分跳频通信技术和按序列检测方法的结合，使通信系统的抗部分频带噪声干扰的性能得到了比较显著的提升。Differential Frequency Hopping （DFH） is a novel technique for the frequency-hopping system in High Frequency （HF） bands. Symbol-by-symbol detection and sequence detection are adopted in DFH system, With these two detection methods, the symbol error rate （SER） performances of DFH system are analyzed over Rayleigh-fading channels with partial band noise jamming （PBNJ） and additive white Gaussian noise （AWGN）. Simulations validate the analyses. The results of analyses and simulations prove that the DFH system with sequence detection can achieve better anti-jam （AJ） performance than that of conventional frequency-hopping （FH） system.

关 键 词：差分跳频 部分频带噪声干扰 逐符号检测 按序列检测 瑞利衰落 

分 类 号：TN914.41[电子电信—通信与信息系统]