Addressing the Mutual Interference in Uplink ISAC Receivers: A Projection Method
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arXiv
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| Hauptverfasser: | , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909300351303680 |
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| author | Yu, Zhiyuan Ren, Hong Pan, Cunhua Zhou, Gui Wang, Ruizhe Liu, Mengyu Wang, Jiangzhou |
| author_facet | Yu, Zhiyuan Ren, Hong Pan, Cunhua Zhou, Gui Wang, Ruizhe Liu, Mengyu Wang, Jiangzhou |
| contents | Dual function radar and communication (DFRC) is a promising research direction within integrated sensing and communication (ISAC), improving hardware and spectrum efficiency by merging sensing and communication (S&C) functionalities into a shared platform. However, the DFRC receiver (DFRC-R) is tasked with both uplink communication signal detection and simultaneously target-related parameter estimation from the echoes, leading to issues with mutual interference. In this paper, a projection-based scheme is proposed to equivalently transform the joint signal detection and target estimation problem into a joint signal detection process across multiple snapshots. Compared with conventional successive interference cancellation (SIC) schemes, our proposed approach achieves a higher signal-to-noise ratio (SNR), and a higher ergodic rate when the radar signal is non-negligible. Nonetheless, it introduces an ill-conditioned signal detection problem, which is addressed using a non-linear detector. By jointly processing an increased number of snapshots, the proposed scheme can achieve high S&C performance simultaneously. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_16455 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Addressing the Mutual Interference in Uplink ISAC Receivers: A Projection Method Yu, Zhiyuan Ren, Hong Pan, Cunhua Zhou, Gui Wang, Ruizhe Liu, Mengyu Wang, Jiangzhou Information Theory Signal Processing Dual function radar and communication (DFRC) is a promising research direction within integrated sensing and communication (ISAC), improving hardware and spectrum efficiency by merging sensing and communication (S&C) functionalities into a shared platform. However, the DFRC receiver (DFRC-R) is tasked with both uplink communication signal detection and simultaneously target-related parameter estimation from the echoes, leading to issues with mutual interference. In this paper, a projection-based scheme is proposed to equivalently transform the joint signal detection and target estimation problem into a joint signal detection process across multiple snapshots. Compared with conventional successive interference cancellation (SIC) schemes, our proposed approach achieves a higher signal-to-noise ratio (SNR), and a higher ergodic rate when the radar signal is non-negligible. Nonetheless, it introduces an ill-conditioned signal detection problem, which is addressed using a non-linear detector. By jointly processing an increased number of snapshots, the proposed scheme can achieve high S&C performance simultaneously. |
| title | Addressing the Mutual Interference in Uplink ISAC Receivers: A Projection Method |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2408.16455 |