二维时频低碰撞区跳频序列集的构造

发布时间：2018-01-16 21:35

本文关键词：二维时频低碰撞区跳频序列集的构造　出处：《系统工程与电子技术》2017年04期 　论文类型：期刊论文

【摘要】：基于低碰撞区跳频序列的准同步跳频通信系统在低碰撞区内具有低的多址干扰。将已有的一维跳频序列低碰撞区扩展到时频二维,给出了两种构造二维时频低碰撞区跳频序列集的方法。构造法分别基于Welch Costas阵列和Golomb Costas阵列,通过序列循环移位的方法分别得到一类二维时频低碰撞区跳频序列集。新的序列集满足跳频序列的二维周期汉明自相关函数和互相关函数构成的理论界,同时在二维时频低碰撞区内具有最优的自相关特性和互相关特性。
[Abstract]:The quasi-synchronous frequency-hopping communication system based on the low-impact frequency hopping sequence has low multiple access interference in the low impact area. The existing one-dimensional frequency hopping sequence is extended to the time-frequency 2-D in the low collision zone. Two methods of constructing two dimensional time-frequency low collision region frequency hopping sequences are presented, which are based on Welch Costas array and Golomb Costas array, respectively. By using the method of cyclic shift of sequences, a class of frequency hopping sequences in the low collision region of two dimensional time-frequency is obtained. The new sequence sets satisfy the theoretical bounds of the two-dimensional periodic hamming autocorrelation function and cross-correlation function of the frequency hopping sequence. At the same time, it has the optimal autocorrelation and cross-correlation characteristics in the two-dimensional time-frequency low impact region.
【作者单位】：燕山大学信息科学与工程学院;
【基金】：国家自然科学基金(61671402) 河北省自然科学基金(F2015203150) 河北省高等学校科学技术研究青年基金项目(QN2016120)资助课题
【分类号】：TN914.4
【正文快照】： 0引言跳频扩频通信系统凭借其抗干扰和抗截获等特性,在无线电通信和移动通信等诸多领域有着广泛应用[1-2]。低碰撞区(low hit zone,LHZ)跳频序列的汉明相关函数值在低碰撞区内很小,利用低碰撞区跳频序列作为扩频序列的跳频通信系统在低碰撞区内具有低的多址干扰。低碰撞区跳

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