A tighter correlation lower bound for quasi-complementary sequence sets
Guan, Yong Liang
Mow, Wai Ho
Date of Issue2014
School of Electrical and Electronic Engineering
Levenshtein improved the famous Welch bound on aperiodic correlation for binary sequences by utilizing some properties of the weighted mean square aperiodic correlation. Following Levenshtein’s idea, a new correlation lower bound for quasi-complementary sequence sets (QCSSs) over the complex roots of unity is proposed in this paper. The derived lower bound is shown to be tighter than the Welch bound for QCSSs when the set size is greater than some value. The conditions for meeting the new bound with equality are also investigated.
DRNTU::Engineering::Electrical and electronic engineering
IEEE transactions on information theory
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