瑞利衰落信道下差分跳频通信系统抗多音干扰的性能分析  

Performance Analysis of Differential Frequency Hopping System with multitone 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：《信号处理》2007年第3期325-329,共5页Journal of Signal Processing

基　　金：国家自然科学基金重大项目;编号:60496313

摘　　要：信号的检测方法是差分跳频中的一项关键技术。在瑞利衰落信道和多音干扰共存的环境下,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。结果证实了,差分跳频通信技术和按序列检测方法的结合,使系统在瑞利衰落信道下抗多音干扰的性能得到了比较显著的提升。The method of signal detection is one of the key technologies in Differential Frequency Hopping （DFH） system. Detection symbol by symbol and detection by sequence are two kinds of methods of signal detection. The performance of DFH with muhitone jamming over Rayleigh fading channels by using these two methods is analyzed respectively in theory, and the corresponding simulation result is given, all these prove that the anti-jam performance of DFH system with signal detection by sequence is much better than ordinary frequency hopping system.

关 键 词：差分跳频 多音干扰 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]