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Lower Bounds on Correlation of Z-Complementary Code Sets

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Abstract

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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Correspondence to Lifang Feng.

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This work was supported by the National Natural Science Foundation of P. R. China (No. 61001110, No. 61272507, No.81000650), and the Fundamental Research Funds for the Central Universities (No.FRF-TP-09-015A), and the Research Foundation from Ministry of Education of China (No.311007), and the National High-tech R&D Program of China (863 Program No.2012aa121604).

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Feng, L., Fan, P. & Zhou, X. Lower Bounds on Correlation of Z-Complementary Code Sets. Wireless Pers Commun 72, 1475–1488 (2013). https://doi.org/10.1007/s11277-013-1090-3

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