This paper presents an efficient construction of two-dimensional (2D) complete complementary codes (CCCs) for their modern application as omnidirectional precoding matrices in massive MIMO systems to attain enhanced cell coverage. Unlike the traditional 1D CCCs, little progress has been made on efficient and systematic constructions of the 2D counterpart. In contrast to the existing recursive constructions with the aid of various sequence operations, certain 1D seed sequences or 2D arrays, we propose to use 2D generalized Boolean functions for direct synthesis of 2D CCCs. Simulation results show that the proposed 2D CCCs appear to be good candidates for precoding matrices to achieve omnidirectional transmission in massive MIMO systems.
翻译：本文介绍了现代应用的二维(2D)完整补充代码(CCCs)的高效构建,作为大型MIMO系统中的全向预编码矩阵,以扩大细胞覆盖率。与传统的1D CCCs不同,在2D对应方的有效和系统构建方面进展甚微。与现有在各种序列操作、某些1D种子序列或2D阵列的帮助下的循环构建相比,我们提议使用2D通用布尔琳函数直接合成2DCCs。模拟结果表明,拟议的2D CCCs似乎是在大型MIMO系统中实现全向传输的预编码矩阵的良好候选方。
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