Fundamental Limits of Communication-Assisted Sensing in ISAC Systems
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arXiv
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| Autores principales: | , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866911850206068736 |
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| author | Dong, Fuwang Liu, Fan Liu, Shihang Xiong, Yifeng Yuan, Weijie Cui, Yuanhao |
| author_facet | Dong, Fuwang Liu, Fan Liu, Shihang Xiong, Yifeng Yuan, Weijie Cui, Yuanhao |
| contents | In this paper, we introduce a novel communication-assisted sensing (CAS) framework that explores the potential coordination gains offered by the integrated sensing and communication technique. The CAS system endows users with beyond-line-of-the-sight sensing capabilities, supported by a dual-functional base station that enables simultaneous sensing and communication. To delve into the system's fundamental limits, we characterize the information-theoretic framework of the CAS system in terms of rate-distortion theory. We reveal the achievable overall distortion between the target's state and the reconstructions at the end-user, referred to as the sensing quality of service, within a special case where the distortion metric is separable for sensing and communication processes. As a case study, we employ a typical application to demonstrate distortion minimization under the ISAC signaling strategy, showcasing the potential of CAS in enhancing sensing capabilities. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_08188 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Fundamental Limits of Communication-Assisted Sensing in ISAC Systems Dong, Fuwang Liu, Fan Liu, Shihang Xiong, Yifeng Yuan, Weijie Cui, Yuanhao Information Theory Signal Processing In this paper, we introduce a novel communication-assisted sensing (CAS) framework that explores the potential coordination gains offered by the integrated sensing and communication technique. The CAS system endows users with beyond-line-of-the-sight sensing capabilities, supported by a dual-functional base station that enables simultaneous sensing and communication. To delve into the system's fundamental limits, we characterize the information-theoretic framework of the CAS system in terms of rate-distortion theory. We reveal the achievable overall distortion between the target's state and the reconstructions at the end-user, referred to as the sensing quality of service, within a special case where the distortion metric is separable for sensing and communication processes. As a case study, we employ a typical application to demonstrate distortion minimization under the ISAC signaling strategy, showcasing the potential of CAS in enhancing sensing capabilities. |
| title | Fundamental Limits of Communication-Assisted Sensing in ISAC Systems |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2404.08188 |