University of Oulu

V. Tapio, D. Jagyasi, A. Shojaeifard, P. Pirinen and M. Juntti, "SNR-based Configuration for RIS-Integrated NR," 2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall), London, United Kingdom, 2022, pp. 1-5, doi: 10.1109/VTC2022-Fall57202.2022.10012756.

SNR-based configuration for RIS-integrated NR

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Author: Tapio, Visa1; Jagyasi, Deepa2; Shojaeifard, Arman2;
Organizations: 1Centre for Wireles Communications (CWC), University of Oulu, Oulu, Finland
2InterDigital Europe, Ltd., London, UK
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.6 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2022
Publish Date: 2023-01-30


Configuration of a reconfigurable intelligent surface (RIS) as a solution to an optimization problem for spectral or energy efficiency requires the estimation of the channels between the transmitter and the RIS and between the RIS and the receiver. The channel estimation and the RIS configuration by optimization are computationally intensive processes in RIS assisted wireless links. The approach proposed in this paper simplifies and speeds up the RIS configuration process by relaxing the demand to find the optimal solution but instead aims to reach a predetermined channel quality measured with the signal-to-noise ratio. It is also shown that when a single dominant path exists between a mobile user and the RIS and also between the RIS and a base station, the RIS configuration calculated as a solution to a spectral efficiency maximization problem and configuration based on conventional antenna array beam steering give the same result.

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Series: IEEE Vehicular Technology Conference
ISSN: 1550-2252
ISSN-E: 2577-2465
ISSN-L: 1550-2252
ISBN: 978-1-6654-5468-1
ISBN Print: 978-1-6654-5469-8
Pages: 1 - 5
Host publication: 2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall), 26 - 29 September 2022 : proceedings
Conference: IEEE Vehicular Technology Conference
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research is partially funded by the Academy of Finland 6Genesis Flagship (grant 318927) and InterDigital Europe, Ltd.
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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