Recently, quasi-complementary sequence sets (QCSSs) including low correlation zone complementary sequence sets (LCZ-CSSs), and low correlation complementary sequence sets (LC-CSSs) have raised lots of concerns. According to the theoretical bounds, the set size of a QCSS is much larger than that of a traditional perfect complementary sequence set (PCSS). As a result, it is believed that QCSSs have potential applications in multi-carrier code-division multiple-access (MC-CDMA) systems to support more users. As binary sequences are desired in practice because of easier realization, we consider the design of binary QCSSs with large set size in this letter. A construction of aperiodic binary LCZ-CSSs is proposed, which leads to aperiodic binary LCZ-CSSs with asymptotically optimal parameters. Additional, aperiodic binary LC-CSSs with asymptotically optimal parameters can also be derived from the proposed construction.

中文翻译：

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具有低相关区的二进制互补序列集

最近，包括低相关区互补序列集（LCZ-CSS）和低相关互补序列集（LC-CSS）在内的准互补序列集（QCSS）引起了很多关注。根据理论界限，QCSS 的集合大小远大于传统的完美互补序列集 (PCSS)。因此，相信 QCSS 在多载波码分多址 (MC-CDMA) 系统中具有潜在应用，以支持更多用户。由于在实践中需要二进制序列，因为更容易实现，我们在这封信中考虑了具有大集合大小的二进制 QCSS 的设计。提出了一种非周期性二元LCZ-CSS的构造，这导致了具有渐近最优参数的非周期性二元LCZ-CSS。额外的，