Controlling the peak-to-mean envelope power ratio (PMEPR) of multi-carrier code division multiple access (MC-CDMA) transmissions is a notoriously important problem. In this letter, a direct construction of multiple complete complementary codes (CCCs) with inter-set zero cross-correlation zone (ZCCZ) is proposed based on multivariable functions. The presented construction has an advantage over the previous works with regard to the new flexible parameters and low column sequence PMEPR, which may give an extra benefit in fulfilling different requirements and managing PMEPR in MC-CDMA systems with multiple cells. In addition, it turns out that the combination of the constructed CCCs results in a new optimal Z-complementary code set (ZCCS).

中文翻译：

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具有集间零互相关区的多重完全互补码的新构造

控制多载波码分多址 (MC-CDMA) 传输的峰均包络功率比 (PMEPR) 是一个众所周知的重要问题。在这封信中，提出了一种基于多变量函数的具有集间零互相关区（ZCCZ）的多个完全互补码（CCC）的直接构造。所提出的结构在新的灵活参数和低列序列 PMEPR 方面优于以前的工作，这可能在满足不同要求和管理具有多个小区的 MC-CDMA 系统中的 PMEPR 方面提供额外的好处。此外，事实证明，构造的 CCC 的组合产生了一个新的最优 Z 互补码集（ZCCS）。