Lower Bounds on Correlation of Z-Complementary Code Sets

Lower Bounds on Correlation of Z-Complementary Code Sets
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Z 互补代码集相关性的下界

DOI:
10.1007/s11277-013-1090-3
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发表时间:
2013-09
影响因子:
2.2
通讯作者:
Zhou, Xianwei
Zhou, Xianwei
中科院分区:
计算机科学4区
文献类型:
--
作者:
Feng, Lifang;Fan, Pingzhi;Zhou, Xianwei

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如果所涉及的码的自相关函数之和在零相关区(ZCZ)中(零移位除外)为零,则二进制码的集合称为Z-互补码集。与传统的互补码集相比,Z-互补码集不仅在码长上有更大的自由度,而且有更多的配对。本文推导了Z-互补二进制码集的周期/非周期相关的下界,该下界涉及配对数目、家族大小、序列长度、ZCZ的长度、ZCZ内的最大周期/非周期自相关旁瓣以及ZCZ内的最大周期/非周期相关值。所提出的下界为实际应用中设计、优化和选择Z-互补码集提供了理论依据。
A set of binary codes is called a Z-complementary code set if the sum of the autocorrelation functions of the codes involved is zero in the zero correlation zone (ZCZ) except at zero shift. Comparing to the traditional complementary code sets, the Z-complementary code sets not only have more freedom on the code length, but also have much more mates. In this paper, lower bounds on periodic/aperiodic correlation of Z-complementary binary code sets with respect to the number of mates, family size, sequence length, the length of ZCZ, maximum periodic/aperiodic autocorrelation sidelobe inside the ZCZ and maximum periodic/aperiodic crosscorrelation value inside the ZCZ, are derived. The proposed lower bounds provide theoretical criteria for designing, optimizing and choosing Z-complementary code set in applications.
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