Sensing in Bi-Static ISAC Systems with Clock Asynchronism: A Signal Processing Perspective
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916299082301440 |
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| author | Wu, Kai Pegoraro, Jacopo Meneghello, Francesca Zhang, J. Andrew Lacruz, Jesus O. Widmer, Joerg Restuccia, Francesco Rossi, Michele Huang, Xiaojing Zhang, Daqing Caire, Giuseppe Guo, Y. Jay |
| author_facet | Wu, Kai Pegoraro, Jacopo Meneghello, Francesca Zhang, J. Andrew Lacruz, Jesus O. Widmer, Joerg Restuccia, Francesco Rossi, Michele Huang, Xiaojing Zhang, Daqing Caire, Giuseppe Guo, Y. Jay |
| contents | Integrated Sensing and Communication (ISAC) has been identified as a pillar usage scenario for the impending 6G era. Bi-static sensing, a major type of sensing in ISAC, is promising to expedite ISAC in the near future, as it requires minimal changes to the existing network infrastructure. However, a critical challenge for bi-static sensing is clock asynchronism due to the use of different clocks at far-separated transmitters and receivers. This causes the received signal to be affected by time-varying random phase offsets, severely degrading, or even failing, direct sensing. Hence, to effectively enable ISAC, considerable research has been directed toward addressing the clock asynchronism issue in bi-static sensing. This paper provides an overview of the issue and existing techniques developed in an ISAC background. Based on the review and comparison, we also draw insights into the future research directions and open problems, aiming to nurture the maturation of bi-static sensing in ISAC. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_09048 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Sensing in Bi-Static ISAC Systems with Clock Asynchronism: A Signal Processing Perspective Wu, Kai Pegoraro, Jacopo Meneghello, Francesca Zhang, J. Andrew Lacruz, Jesus O. Widmer, Joerg Restuccia, Francesco Rossi, Michele Huang, Xiaojing Zhang, Daqing Caire, Giuseppe Guo, Y. Jay Signal Processing Integrated Sensing and Communication (ISAC) has been identified as a pillar usage scenario for the impending 6G era. Bi-static sensing, a major type of sensing in ISAC, is promising to expedite ISAC in the near future, as it requires minimal changes to the existing network infrastructure. However, a critical challenge for bi-static sensing is clock asynchronism due to the use of different clocks at far-separated transmitters and receivers. This causes the received signal to be affected by time-varying random phase offsets, severely degrading, or even failing, direct sensing. Hence, to effectively enable ISAC, considerable research has been directed toward addressing the clock asynchronism issue in bi-static sensing. This paper provides an overview of the issue and existing techniques developed in an ISAC background. Based on the review and comparison, we also draw insights into the future research directions and open problems, aiming to nurture the maturation of bi-static sensing in ISAC. |
| title | Sensing in Bi-Static ISAC Systems with Clock Asynchronism: A Signal Processing Perspective |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2402.09048 |