基于OFDM的5G NR被动雷达的实验评估利用参考,控制和用户数据.
Marek Wypich1,2, Tomasz P Zielinski1
1Faculty of Computer Science, Electronics and Telecommunications, Institute of Telecommunications, AGH University of Krakow, al. A. Mickiewicza 30, 30-059 Krakow, Poland.
Sensors (Basel, Switzerland)
|February 27, 2026
概括
这项研究实验性地表明,在被动雷达中使用5G下链信号的用户数据可以显著提高传感性能. 结合更多的信号组件可以提高检测概率和峰值高度,而不是仅用于试点的方法.
科学领域:
- 综合传感和通信 (ISAC) 系统
- 无线通信系统无线通信系统
- 信号处理 信号处理
背景情况:
- 以通信为中心的ISAC系统中的被动雷达利用现有的通信信号进行传感.
- 基于直角频率分割复杂化 (OFDM) 的被动雷达通常使用参考信号来估计频道频率响应 (CFR).
- 之前的模拟表明,通过将用户数据纳入CFR估计,可以提高性能.
研究的目的:
- 实验评估基于OFDM的被动雷达,利用5G新无线电 (NR) 下链波形的所有组件.
- 评估使用用户数据和各种下行链路道对传感性能的影响.
- 分析数据位置和比特错误率 (BER) 的部分知识对性能的影响.
主要方法:
- 基于OFDM的被动雷达系统的实验评估.
- 联合利用5G NR下链的同步信号 (PSS,SSS),控制通道 (PBCH,PDCCH),数据通道 (PDSCH) 和参考信号 (DM-RS,CSI-RS).
- 估计传输位错误率 (BER) 和分析其影响.
- 调查与 PDSCH 资源元件位置的部分知识的场景.
主要成果:
- 使用来自完全占用5G下链信号的用户数据显著提高了检测概率 (POD) 和峰值与噪声地板比率 (PNFR),而不是仅用于试点的传感.
- 在假设完全了解物理下链共享通道 (PDSCH) 位置的前提下,观察到性能增长.
- 分析量化了BER和部分数据位置知识对传感性能的影响.
结论:
- 共同利用所有5G NR下链波形组件,特别是用户数据,提高了被动雷达传感性能.
- 对数据位置的部分知识和不同的BER条件带来了现实的挑战,影响了性能.
- 这些发现支持将用户数据集成为5G系统中改进的被动雷达功能.
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