In this letter, a synchronization signal design technique for millimeter-wave cellular vehicle-to-everything (C-V2X) communications is proposed. The proposed vehicle synchronization signal generated using a generalized reciprocal sequence of m-sequence is shown to have desirable properties for orthogonal frequency division multiplexing (OFDM)-based C-V2X, particularly for vehicle-to-vehicle (V2V) synchronization. It is shown that the detection probabilities of synchronization signals in C-V2X are not degraded when base stations and vehicles coexist, owing to minimal interference between the synchronization signals. Moreover, the computational complexity required for signal detection and synchronization in V2V links can be significantly reduced with the proposed vehicle synchronization signal.

中文翻译：

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毫米波蜂窝 V2X 通信的同步信号设计


在这封信中，提出了一种用于毫米波蜂窝车对万物（C-V2X）通信的同步信号设计技术。使用 m 序列的广义倒数序列生成的所提出的车辆同步信号被证明具有基于正交频分复用 (OFDM) 的 C-V2X 的理想特性，特别是对于车辆到车辆 (V2V) 同步。结果表明，当基站和车辆共存时，由于同步信号之间的干扰最小，C-V2X 中同步信号的检测概率不会降低。此外，所提出的车辆同步信号可以显着降低V2V链路中信号检测和同步所需的计算复杂度。