采用ZP-OFDM的半双工联合通信和传感系统

Sayed Hossein Dokhanchi, A. Barreto, G. Fettweis
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引用次数: 5

摘要

本文研究了一种采用补零正交频分复用(ZP-OFDM)的联合通信与传感系统,以简化单站雷达接收机的硬件设计。这是可能的,因为与循环前缀OFDM (CP-OFDM)雷达不同,ZP-OFDM雷达不需要完全双工,因为在保护间隔(GI)期间没有自干扰,可用于雷达探测。推导了在这种情况下雷达检测所需的接收机信号处理方法,并证明了在CP-OFDM JC&S自干扰较大时,采用ZP-OFDM是有益的。这一优势取决于目标距离,因为它会影响可在GI中捕获的反射能量的相对能量量。在一定条件下,ZP-OFDM可以成为CP-OFDM的一种经济高效的替代方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A half-duplex joint communications and sensing system using ZP-OFDM
In this paper, we investigate a joint communications and sensing (JC&S) system using zero-padded orthogonal frequency division multiplexing (ZP-OFDM) to simplify the hardware design at the receiver of a monostatic radar. This is possible because, unlike with cyclic-prefix OFDM (CP-OFDM) radar, ZP-OFDM radar does not need full duplexing, as there is no self-interference during the guard interval (GI), which can be used for radar detection. We derive the required receiver signal processing for radar detection in that case, and show that when the self-interference in CP-OFDM JC&S is high, the ZP-OFDM is beneficial. This advantage depends on the target distance, because it influences the relative amount of energy from the reflected energy that can be captured in the GI. We show then that ZP-OFDM can be a cost-effective and efficient alternative to CP-OFDM under certain conditions.
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