科研之友
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摘要
An asymmetric zero correlation zone (A-ZCZ) sequence set is a type of ZCZ sequence set and consists of multiple sequence subsets. It is the most important property that is the cross-correlation function between arbitrary sequences belonging to different sequence subsets has quite a large zero-cross-correlation zone (ZCCZ). Our proposed A-ZCZ sequence sets can be constructed based on interleaved technique and orthogonality-preserving transformation by any perfect sequence of length P = Nq(2k + 1) and Hadamard matrices of order T >= 2, where N >= 1, q >= 1 and k >= 1. If q = 1, the novel sequence set is optimal ZCZ sequence set, which has parameters (TP, TN, 2k + 1) for all positive integers P = N(2k + 1). The proposed A-ZCZ sequence sets have much larger ZCCZ, which are expected to be useful for designing spreading sequences for QS-CDMA systems.
