Intelligent beam steering for wireless communication using programmable metasurfaces
| Autor: | Nouman Ashraf, Taqwa Saeed, Hamidreza Taghvaee, Sergi Abadal, Vasos Vassiliou, Christos Liaskos, Andreas Pitsillides, Marios Lestas |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Arquitectura de Computadors, Universitat Politècnica de Catalunya. IDEAI-UPC - Intelligent Data sciEnce and Artificial Intelligence Research Group |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
HyperSurface
Enginyeria de la telecomunicació::Telemàtica i xarxes d'ordinadors [Àrees temàtiques de la UPC] Mechanical Engineering Wireless communications systems Extremum seeking control Computer Science Applications Metasurfaces Metamaterial Intelligent reflecting surfaces Comunicació sense fil Sistemes de Metamaterials Automotive Engineering Beam steering Programmable wireless environments |
| Popis: | Reconfigurable Intelligent Surfaces (RIS) are well established as a promising solution to the blockage problem in millimeter-wave (mm-wave) and terahertz (THz) communications, envisioned to serve demanding networking applications, such as 6G and vehicular. HyperSurfaces (HSF) is a revolutionary enabling technology for RIS, complementing Software Defined Metasurfaces (SDM) with an embedded network of controllers to enhance intelligence and autonomous operation in wireless networks. In this work, we consider feedback-based autonomous reconfiguration of the HSF controller states to establish a reliable communication channel between a transmitter and a receiver via programmable reflection on the HSF when Line-of-sight (LoS) between them is absent. The problem is to regulate the angle of reflection on the metasurface such that the power at the receiver is maximized. Extremum Seeking Control (ESC) is employed with the control signals generated mapped into appropriate metasurface coding signals which are communicated to the controllers via the embedded controller network (CN). This information dissemination process incurs delays which can compromise the stability of the feedback system and are thus accounted for in the performance evaluation. Extensive simulation results demonstrate the effectiveness of the proposed method to maximize the power at the receiver within a reasonable time even when the latter is mobile. The spatiotemporal nature of the traffic for different sampling periods is also characterized. This work was supported in part by the European Union through the Horizon 2020: Future Emerging Topics Call (FETOPEN), under Grant EU736876; in part by the Project VISORSURF (http://www.visorsurf.eu), Research and Innovation Programme, under Agreement 739578; and in part by the Government of the Republic of Cyprus through the Directorate General for European Programmes, Coordination, and Development. |
| Databáze: | OpenAIRE |
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