Low-Hit-Zone Frequency-Hopping Sequence Sets with Optimal Periodic Partial Hamming Correlation Properties

Limengnan ZHOU  Hongyu HAN  Xing LIU  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E102-A   No.1   pp.316-319
Publication Date: 2019/01/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E102.A.316
Type of Manuscript: LETTER
Category: Spread Spectrum Technologies and Applications
frequency-hopping sequence,  low-hit-zone,  partial periodic Hamming correlation,  quasi-synchronous frequency-hopping multiple-access system,  interleaving techniques,  

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Frequency-hopping sequence (FHS) sets with low-hit-zone (LHZ) have Hamming correlations maintained at a low level as long as the relative time delay between different sequences are limited in a zone around the origin, and thus can be well applied in quasi-synchronous (QS) frequency-hopping multiple-access (FHMA) systems to reduce the mutual interference between different users. Moreover, the periodic partial Hamming correlation (PPHC) properties of employed LHZ-FHS sets usually act as evaluation criterions for the performances of QS-FHMA systems in practice. In this letter, a new class of LHZ-FHS sets is constructed via interleaving techniques. Furthermore, these new LHZ-FHS sets also possess optimal PPHC properties and parameters not included in the related literature.