一种基于RS编码的NHZ跳频序列构造方法

The No-hit-zone Design Method of Frequency Hopping Sequence Based on RS Encoding

跳频通信系统可以极大的提高通信系统的抗截获和抗干扰能力,为解决基于RS(63,2)编码产生的跳频序列频率碰撞概率较高的问题,提出了一种改进的宽间隔跳频序列构造方法,该方法通过矩阵旋转增大无碰撞区的跳频序列频隙间隔,降低跳频序列频率碰撞概率。仿真结果表明,改进后算法序列的汉明互相关值明显减少,频隙间隔明显增大;且在无碰撞区范围内接入跳频网络时,可显著提高跳频系统的抗多址干扰能力。

Frequency hopping spread spectrum(FHSS)owns better anti multi-path and anti-fading,which can enhance the performance of anti-intercepting and anti-jamming.Aiming at the shortcoming of the high collision probability of the frequency hopping sequence generated by RS(63,2)encoding,an enhanced frequency hopping sequence method is designed,which can enhance the frequency gap and reduce the collision probability.The simulation results show that the Hamming cross-correlation of the improved sequence decreases significantly,meanwhile the frequency gap increases obviously,and the anti-multiple access interference(MAI)performance improve significantly when accessing FHSS network in collision free area.