论文标题
关于相位噪声对OFDM ISAC系统中单静感感应的影响
On the Impact of Phase Noise on Monostatic Sensing in OFDM ISAC Systems
论文作者
论文摘要
相位噪声（PN）可以成为针对6G无线网络的集成传感和通信系统（ISAC）系统的主要瓶颈。在本文中，我们考虑了一个具有振荡器缺陷的OFDM ISAC系统，并通过执行误导的Cramér-Rao Bound（MCRB）分析来研究PN对单恒定传感性能的影响。模拟在SNR，振荡器类型（自由运行振荡器（FROS）和相锁环（PLLS）），振荡器频谱，PLL环路带宽和目标范围的3-DB带宽方面进行模拟。结果提供了关于PN何时导致范围和/或速度准确性显着降低的宝贵见解，从而在6G ISAC系统中为硬件和算法设计建立了重要的指南。
Phase noise (PN) can become a major bottleneck for integrated sensing and communications (ISAC) systems towards 6G wireless networks. In this paper, we consider an OFDM ISAC system with oscillator imperfections and investigate the impact of PN on monostatic sensing performance by performing a misspecified Cramér-Rao bound (MCRB) analysis. Simulations are carried out under a wide variety of operating conditions with regard to SNR, oscillator type (free-running oscillators (FROs) and phase-locked loops (PLLs)), 3-dB bandwidth of the oscillator spectrum, PLL loop bandwidth and target range. The results provide valuable insights on when PN leads to a significant degradation in range and/or velocity accuracy, establishing important guidelines for hardware and algorithm design in 6G ISAC systems.
