New Extension Method of Quaternary Low Correlation Zone Sequence Sets

Ji-Woong JANG  Young-Sik KIM  Sang-Hyo KIM  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E93-A   No.2   pp.557-560
Publication Date: 2010/02/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E93.A.557
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Coding Theory
low correlation zone,  LCZ sequence sets,  QS-CDMA,  quaternary sequences,  sequences,  

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We propose an extension method of quaternary low correlation zone (LCZ) sequence set with odd period. From a quaternary LCZ sequence set with parameters (N, M, L, 1), the proposed method constructs a new quaternary LCZ sequence set with parameters (2N, 2M, L, 2), where N is odd. If the employed LCZ sequence set in the construction is optimal, the extended LCZ sequence set becomes also optimal where N = kL, L > 4, and k>2.