@inproceedings{5482b830af1c4f51a309f425355c35e9,
title = "On the Impact of Phase Noise on Monostatic Sensing in OFDM ISAC Systems",
abstract = "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 Cram{\'e}r-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.",
keywords = "integrated sensing and communications, misspecified Cramer-Rao bound, OFDM, phase noise",
author = "Keskin, {Musa Furkan} and Carina Marcus and Olof Eriksson and Henk Wymeersch and Visa Koivunen",
note = "Funding Information: This work is supported, in part, by Vinnova Grant 2021-02568 and MSCA-IF grant 888913 (OTFS-RADCOM). Publisher Copyright: {\textcopyright} 2023 IEEE.; IEEE Radar Conference, RadarConf ; Conference date: 01-05-2023 Through 05-05-2023",
year = "2023",
doi = "10.1109/RadarConf2351548.2023.10149566",
language = "English",
series = "Proceedings of the IEEE Radar Conference",
publisher = "IEEE",
booktitle = "RadarConf23 - 2023 IEEE Radar Conference, Proceedings",
address = "United States",
}