Sensing-Aware Transmit Waveform/Receive Filter Design for OFDM-MBS Systems
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866911030193422336 |
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| author | Li, Xinghe Cheng, Kainan Guo, Hongzhi Li, Huiyong Cheng, Ziyang |
| author_facet | Li, Xinghe Cheng, Kainan Guo, Hongzhi Li, Huiyong Cheng, Ziyang |
| contents | In this letter, we study the problem of cooperative sensing design for an orthogonal frequency division multiplexing (OFDM) multiple base stations (MBS) system. We consider a practical scenario where the base stations (BSs) exploit certain subcarriers to realize a sensing function. Since the high sidelobe level (SLL) of OFDM waveforms degrades radar detection for weak targets, and the cross-correlation generated by other BSs further exacerbates detection performance, we devise a joint design scheme for OFDM sequence and receive filter by minimizing the integrated sidelobe level (ISL) while satisfying mainlobe level, peak-to-average power ratio (PAPR) and spectrum allocation constraints. To address this non-convex problem, we propose an alternating optimization (AO)-based algorithm. Numerical simulations validate the effectiveness of the proposed method, demonstrating the superiority of SSL reduction in the MBS system over the matched filtering method. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_20231 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Sensing-Aware Transmit Waveform/Receive Filter Design for OFDM-MBS Systems Li, Xinghe Cheng, Kainan Guo, Hongzhi Li, Huiyong Cheng, Ziyang Signal Processing In this letter, we study the problem of cooperative sensing design for an orthogonal frequency division multiplexing (OFDM) multiple base stations (MBS) system. We consider a practical scenario where the base stations (BSs) exploit certain subcarriers to realize a sensing function. Since the high sidelobe level (SLL) of OFDM waveforms degrades radar detection for weak targets, and the cross-correlation generated by other BSs further exacerbates detection performance, we devise a joint design scheme for OFDM sequence and receive filter by minimizing the integrated sidelobe level (ISL) while satisfying mainlobe level, peak-to-average power ratio (PAPR) and spectrum allocation constraints. To address this non-convex problem, we propose an alternating optimization (AO)-based algorithm. Numerical simulations validate the effectiveness of the proposed method, demonstrating the superiority of SSL reduction in the MBS system over the matched filtering method. |
| title | Sensing-Aware Transmit Waveform/Receive Filter Design for OFDM-MBS Systems |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2506.20231 |