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Joint RIS Calibrati...
Joint RIS Calibration and Multi-User Positioning
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- Lu, Yi (författare)
- Tammerfors tekniska universitet,Tampere University of Technology
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- Chen, Hui, 1992 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Talvitie, Jukka (författare)
- Tampereen Yliopisto,University of Tampere
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- Wymeersch, Henk, 1976 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Valkama, Mikko (författare)
- Tampereen Yliopisto,University of Tampere
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(creator_code:org_t)
- 2022
- 2022
- Engelska.
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Ingår i: IEEE Vehicular Technology Conference. - 1550-2252. ; 2022-September
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Reconfigurable intelligent surfaces (RISs) are expected to be a key component enabling the mobile network evolution towards a flexible and intelligent 6G wireless platform. In most of the research works so far, RIS has been treated as a passive base station (BS) with a known state, in terms of its location and orientation, to boost the communication and/or terminal positioning performance. However, such performance gains cannot be guaranteed anymore when the RIS state is not perfectly known. In this paper, by taking the RIS state uncertainty into account, we formulate and study the performance of a joint RIS calibration and user positioning (JrCUP) scheme. From the Fisher information perspective, we formulate the JrCUP problem in a network-centric single-input multiple-output (SIMO) scenario with a single BS, and derive the analytical lower bound for the states of both user and RIS. We also demonstrate the geometric impact of different user locations on the JrCUP performance while also characterizing the performance under different RIS sizes. Finally, the study is extended to a multiuser scenario, shown to further improve the state estimation performance.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)
Nyckelord
- Fisher information
- 6G
- reconfigurable intelligent surfaces
- joint calibration and positioning
- 5G New Radio
Publikations- och innehållstyp
- kon (ämneskategori)
- ref (ämneskategori)
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