基于缓解共址干扰的低碰撞区系列构造和分析

针对跳频码分(FH-CDMA)组网通信中所面临的频率碰撞问题,论述了跳频组网方式与汉明相关的关系,提出了一种利用低碰撞区(few-hit zone,FHZ)系列来缓解共址干扰的方法,低碰撞区对FHZ码的构造方法进行了分析.结果表明,在准同步的条件下,利用该方法所构造的系列具有较好的性能,与零碰撞区(no-hit zone,NHZ)序列相比能提供更多的用户地址码,可有效地减小跳频码分组网系统的共址干扰.

Analysis and generation of few hit zone sequence based on collocation interference mitigation

To solve the problem confronted in FH-CDMA networking communication,the relationship between the method of FH networking and Hamming correlation is illustrated,and a method is proposed to mitigate collocation interference utilizing few-hit zone(FHZ) sequence.Then the generation measure of FHZ sequence is analyzed.Results show that the sequence generated by the proposed method has high performance in condition of quasi-synchronous.Compared with NHZ sequence,it provides a larger system capacity for more user,and collocation interference of FH-CDMA internetworking is reduced remarkably.