Randomized Control of Wireless Temporal Coherence Via Reconfigurable Intelligent Surface

Joeo Henrique Inacio De Souza, Victor Croisfelt, Fabio Saggese, Taufik Abrao, Petar Popovski

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Abstract

A reconfigurable intelligent surface (RIS) can shape the wireless propagation channel by inducing controlled phase shift variations to the impinging signals. Multiple works have considered the use of RIS with time-varying configurations of reflection coefficients. In this work, we use the RIS to control the channel coherence time and introduce a generalized discrete-time-varying channel model for RIS-aided systems. We characterize the temporal variation of the channel correlation by assuming that the configuration of RIS' elements changes at every time step. The analysis converges to a randomized framework to control the channel coherence time by setting the number of RIS' elements and their phase shifts. The main result is a framework for a flexible block-fading model, where the number of samples within a coherence block can be dynamically adapted.

OriginalsprogEngelsk
Titel2023 IEEE International Conference on Communications Workshops : Sustainable Communications for Renaissance, ICC Workshops 2023
Antal sider6
ForlagIEEE
Publikationsdato2023
Sider1535-1540
ISBN (Trykt)979-8-3503-3308-4
ISBN (Elektronisk)979-8-3503-3307-7
DOI
StatusUdgivet - 2023
Begivenhed2023 IEEE International Conference on Communications Workshops, ICC Workshops 2023 - Rome, Italien
Varighed: 28 maj 20231 jun. 2023

Konference

Konference2023 IEEE International Conference on Communications Workshops, ICC Workshops 2023
Land/OmrådeItalien
ByRome
Periode28/05/202301/06/2023
NavnIEEE International Conference on Communications Workshops (ICC Workshops)
ISSN2474-9133

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Publisher Copyright:
© 2023 IEEE.

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