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 under Partial Band Noise Jamming

该文介绍了一种新型的短波跳频通信技术??差分跳频。频率转移函数设计和信号的检测方法是差分跳频中的关键技术。针对逐符号检测接收和序列检测线性合并接收两种信号检测接收方法,分别就差分跳频通信系统抗部分频带噪声干扰的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,差分跳频通信技术与序列检测线性合并接收方法的相结合,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。

This paper presents a new HF hopping system, which is called Differential Frequency Hopping （DFH） system. The frequencies transition function and the method of signal detection are the key technologies in this system. Detection and receiving symbol by symbol, detection by sequence and linear-combining receiving are two kinds of methods of signal detection and receiving. The performance of rejecting Partial Band Noise Jamming （PBNJ） by using these two methods is analyzed respectively in theory, and the corresponding simulation results are given, all these prove that the performance of DFH system with signal detection by sequence and linear-combining receiver is much better than conventional frequency hopping system under PBNJ.