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Near-Optimal Zero Correlation Zone Sequence Sets from Paraunitary Matrices

Das, Shibsankar and Parampalli, U and Majhi, Sudhan and Liu, Zilong (2019) Near-Optimal Zero Correlation Zone Sequence Sets from Paraunitary Matrices. In: 2019 IEEE International Symposium on Information Theory (ISIT), 2019-07-07 - 2019-07-12, Paris, France.

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Abstract

Zero correlation zone (ZCZ) sequence sets play an important role in interference-free quasi-synchronous code-division multiple access communications. In this paper, for the first time, we investigate the periodic correlation properties of polyphase sequences obtained from paraunitary (PU) matrices, which shows the inherent relationship between PU matrix and ZCZ sequence sets. Our investigation suggests that any arbitrary PU matrix can produce ZCZ sequence sets by controlling its expanded form. The key idea is to impose certain restrictions on the expanded forms of the PU matrices to enable precise computation of the periodic correlation functions of the constructed sequences. We show that our proposed construction leads to near-optimal ZCZ sequence sets with regard to the ZCZ set size upper bound.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Published proceedings: 2019 IEEE International Symposium on Information Theory (ISIT)
Divisions: Faculty of Science and Health
Faculty of Science and Health > Computer Science and Electronic Engineering, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 07 Jul 2021 14:48
Last Modified: 15 Jan 2022 01:37
URI: http://repository.essex.ac.uk/id/eprint/30471

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