New Method to Extend the Number of Quaternary Low Correlation Zone Sequence Sets

Chengqian XU  Yubo LI  Kai LIU  Gang LI  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E94-A   No.9   pp.1881-1885
Publication Date: 2011/09/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E94.A.1881
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Information Theory
QS-CDMA,  quaternary sequences,  low correlation zone (LCZ),  inverse Gray mapping,  

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In this correspondence, a new method to extend the number of quaternary low correlation zone (LCZ) sequence sets is presented. Based on the inverse Gray mapping and a binary sequence with ideal two-level auto-correlation function, numbers of quaternary LCZ sequence sets can be generated by choosing different parameters. There is at most one sequence cyclically equivalent in different LCZ sequence sets. The parameters of LCZ sequence sets are flexible.