Tian, Liying and Song, Xiaoshi and Liu, Zilong and Li, Yubo (2025) Asymptotically Optimal Sequence Sets With Low/Zero Ambiguity Zone Properties. IEEE Transactions on Information Theory. p. 1. DOI https://doi.org/10.1109/tit.2025.3553390
Tian, Liying and Song, Xiaoshi and Liu, Zilong and Li, Yubo (2025) Asymptotically Optimal Sequence Sets With Low/Zero Ambiguity Zone Properties. IEEE Transactions on Information Theory. p. 1. DOI https://doi.org/10.1109/tit.2025.3553390
Tian, Liying and Song, Xiaoshi and Liu, Zilong and Li, Yubo (2025) Asymptotically Optimal Sequence Sets With Low/Zero Ambiguity Zone Properties. IEEE Transactions on Information Theory. p. 1. DOI https://doi.org/10.1109/tit.2025.3553390
Abstract
Sequences with low/zero ambiguity zone (LAZ/ZAZ) properties are useful in modern communication and radar systems operating over mobile environments. This paper first presents a new family of ZAZ sequence sets motivated by the “modulating” zero correlation zone (ZCZ) sequences which were first proposed by Popovic and Mauritz. We then introduce a second family of ZAZ sequence sets with comb-like spectrum, whereby the local Doppler resilience is guaranteed by their inherent spectral nulls in the frequency domain. Finally, LAZ sequence sets are obtained by exploiting their connection with a novel class of mapping functions. These proposed unimodular ZAZ and LAZ sequence sets are cyclically distinct and asymptotically optimal with respect to the existing theoretical bounds on ambiguity functions.
Item Type: | Article |
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Uncontrolled Keywords: | Unimodular sequence; low ambiguity zone (LAZ); zero ambiguity zone (ZAZ); comb-like spectrum; wireless communication; radar |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Computer Science and Electronic Engineering, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 26 Mar 2025 10:33 |
Last Modified: | 26 Mar 2025 10:33 |
URI: | http://repository.essex.ac.uk/id/eprint/40581 |
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