A tighter correlation lower bound for quasi-complementary sequence sets

A tighter correlation lower bound for quasi-complementary sequence sets

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 root...

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Bibliographic Details
Main Authors: Liu, Zilong, Guan, Yong Liang, Mow, Wai Ho
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2014
Subjects:
DRNTU::Engineering::Electrical and electronic engineering
Online Access:https://hdl.handle.net/10356/103924
http://hdl.handle.net/10220/19320
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Institution: Nanyang Technological University
Language: English
Description
Summary: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.

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