Journal
IEEE TRANSACTIONS ON INFORMATION THEORY
Volume 66, Issue 1, Pages 669-678Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIT.2019.2944185
Keywords
Aperiodic correlation; Golay complementary pair (GCP); zero correlation zone (ZCZ); Z-complementary pair (ZCP); odd-length binary Z-complementary pairs (OB-ZCPs)
Funding
- INSPIRE Fellowship, Government of India [2014/292]
- Visvesvaraya Young Faculty Research Fellowship, Ministry of Electronics and Information Technology, Government of India
- NSFC-NRF Joint Project [61661146003/NRF2016NRFNSFC001-089]
- National Natural Science Foundation of China [61750110527]
- Research Fund for International Young Scientists
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A pair of sequences is called a Z-complementary pair (ZCP) if it has zero aperiodic autocorrelation sums (AACSs) for time-shifts within a certain region, called zero correlation zone (ZCZ). Optimal odd-length binary ZCPs (OB-ZCPs) display closest correlation properties to Golay complementary pairs (GCPs) in that each OB-ZCP achieves maximum ZCZ of width (N+1)/2 (where N is the sequence length) and every out-of-zone AACSs reaches the minimum magnitude value, i.e. 2. Till date, systematic constructions of optimal OB-ZCPs exist only for lengths 1, where alpha is a positive integer. In this paper, we construct optimal OB-ZCPs of generic lengths (where are non-negative integers and from inserted versions of binary GCPs. The key leading to the proposed constructions is several newly identified structure properties of binary GCPs obtained from Turyn's method. This key also allows us to construct OB-ZCPs with possible ZCZ widths of 4 through proper insertions of GCPs of lengths, respectively. Our proposed OB-ZCPs have applications in communications and radar (as an alternative to GCPs).
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