Ⅱ型四相Z互补序列对的构造

Construction of Type II Quadriphase Z-Complementary Pairs

为丰富Ⅱ型四相Z互补对(QZCP)的参数,研究了两类Ⅱ型QZCP的构造.以交织法为基础,利用长度为N的Golay互补对(GCP)为种子序列对,结合二进制序列到四相序列的映射,提出了长度为4N的Z最优Ⅱ型四相Z互补对(QZCP)和长度为5N的渐进Z最优Ⅱ型QZCP.与已存在的同长度的Z最优Ⅱ型QZCP相比,新构造的序列有更小的零相关区区外非周期自相关函数和(OAACSs)和更低的峰均包络功率比(PMEPR),更能满足应用的需求.

In order to enrich the parameters of type II quadriphase Z complementary pair(QZCP),the struc-tures of two types of type II QZCP are studied.Golay Complementary Pair(GCP)with length N is used as the seed sequence pair.By using the interlacing method and mapping from binary sequence to quadriphase sequence,two constructions for Z-optimal type II QZCP with length 4N and the asymptotic Z-optimal type II QZCP with length 5N are proposed.Compared with the existing Z-optimal Type II QZCP of the same length,the newly constructed sequence has smaller out-of-zcz aperiodic autocorrelation sum(OAACSs)and lower peak-average envelope power ratio(PMEPR),so it can better meet the needs of application.