In this paper, a complexity-effective integer carrier frequency offset (IFO) and primary synchronization signal (PSS) detection scheme is proposed for 5G new radio systems. To estimate the IFO without any prior information about the PSS, the proposed detector uses the fact that three PSS sequences are cyclic-shifted versions of each other, which enables sequential detection of IFO and PSS. Both theoretical and simulation results are presented to verify the effectiveness of the proposed synchronization scheme. It is shown that the proposed scheme achieves a considerable complexity reduction while suffering from only slight degradation in the detection performance, compared to the conventional scheme.

中文翻译：

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5G NR 系统的载波频率偏移和主同步信号的有效顺序检测

在本文中，针对 5G 新无线电系统提出了一种复杂度有效的整数载波频率偏移 (IFO) 和主同步信号 (PSS) 检测方案。为了在没有关于 PSS 的任何先验信息的情况下估计 IFO，所提出的检测器利用三个 PSS 序列是彼此的循环移位版本这一事实，这使得 IFO 和 PSS 的顺序检测成为可能。提出了理论和仿真结果来验证所提出的同步方案的有效性。结果表明，与传统方案相比，所提出的方案实现了相当大的复杂度降低，同时检测性能仅略有下降。