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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2509.08504 |
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| _version_ | 1866914031364734976 |
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| author | Aydogan, Didem Chraiti, Mohaned Tokgöz, Korkut Kaan |
| author_facet | Aydogan, Didem Chraiti, Mohaned Tokgöz, Korkut Kaan |
| contents | Phase noise (PN) is a critical impairment at D-band frequencies (110 to 170 GHz), which are widely investigated as promising candidates for beyond 5G/6G ISAC systems. This paper evaluates OFDM based ISAC sensing performance under realistic oscillator impairments using a hardware-tuned 3GPP PN model at 130 GHz and FFT based radar processing. With a numerology of 480 kHz, results show that PN introduces range RMSE floors of 0.04 to 0.05 m and velocity RMSE floors of 0.12 to 0.18 m/s. Doppler sidelobe metrics also saturate, with PSLR around minus 6 dB and ISLR around minus 4 dB. These findings confirm that range accuracy remains bandwidth limited, while velocity estimation and sidelobe suppression are strongly PN-sensitive. The study highlights the importance of PN-aware waveform and numerology design for sub-THz ISAC and provides insights for future multi-band transceivers. Communication metrics and PN mitigation strategies such as PTRS and CPE tracking are left for future work. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_08504 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On the Performance of ISAC over the D-Band in a Phase-Noise Aware OFDM Systems Aydogan, Didem Chraiti, Mohaned Tokgöz, Korkut Kaan Signal Processing Phase noise (PN) is a critical impairment at D-band frequencies (110 to 170 GHz), which are widely investigated as promising candidates for beyond 5G/6G ISAC systems. This paper evaluates OFDM based ISAC sensing performance under realistic oscillator impairments using a hardware-tuned 3GPP PN model at 130 GHz and FFT based radar processing. With a numerology of 480 kHz, results show that PN introduces range RMSE floors of 0.04 to 0.05 m and velocity RMSE floors of 0.12 to 0.18 m/s. Doppler sidelobe metrics also saturate, with PSLR around minus 6 dB and ISLR around minus 4 dB. These findings confirm that range accuracy remains bandwidth limited, while velocity estimation and sidelobe suppression are strongly PN-sensitive. The study highlights the importance of PN-aware waveform and numerology design for sub-THz ISAC and provides insights for future multi-band transceivers. Communication metrics and PN mitigation strategies such as PTRS and CPE tracking are left for future work. |
| title | On the Performance of ISAC over the D-Band in a Phase-Noise Aware OFDM Systems |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2509.08504 |