Low-Hit-Zone Frequency/Time Hopping Sequence Sets With Large Family Size

IEEE Access

Xing Liu¹  Qin Shu¹  Qi Zeng¹ 

[1] College of Electrical Engineering, Sichuan University, Chengdu, China;

关键词: Frequency hopping sequences;    time hopping sequences;    low hit zone;    Hamming correlation;    theoretical bound;   

DOI  :  10.1109/ACCESS.2019.2959718

来源: DOAJ

【 摘 要 】

For a quasi-synchronous frequency/time hopping (FH/TH) code-division multiple-access (CDMA) system which involves many users, the low-hit-zone (LHZ) FH/TH sequence set with large family size is necessary. In this paper, an upper bound on the family size of LHZ FH/TH sequence sets is derived. The new bound includes the Singleton bound on FH sequence sets as a special case. Further, three constructions of LHZ FH/TH sequence sets are presented, which have optimal/near optimal family size and also optimal maximum Hamming correlation (MHC) with respect to the new bound. They have very large family size compared with the known LHZ FH/TH sequence sets in the literature.

【 授权许可】

Unknown