@article{M58832527,
title = "Binary Sequences of Even Period with 5-Level Autocorrelation and Their Variations for Optimum Odd Autocorrelation",
journal = "The Journal of Korean Institute of Communications and Information Sciences",
year = "2025",
issn = "1226-4717",
doi = "10.7840/kics.2025.50.8.1207",
author = "Gangsan Kim, Hong-Yeop Song",
keywords = "Binary sequences, Cyclic relative difference sets, Favourable autocorrelation",
abstract = "In this paper, we propose a balanced binary sequence of period 2u for some even values of u with 5-level autocorrelation from a cyclic relative difference set with parameters (u,2,u-1,u/2-1). Furthermore, we identify its half-period as those having an optimum odd autocorrelation, and we found that changing one specific bit of this binary sequence results in an almost perfect sequence. Various relations of these with some previous constructions by others are discussed."
}