Intelligent Beam Steering for Wireless Communication Using Programmable MetasurfacesShow others and affiliations
2023 (English)In: IEEE transactions on intelligent transportation systems (Print), ISSN 1524-9050, E-ISSN 1558-0016, Vol. 24, no 5, p. 4848-4861Article in journal (Refereed) Published
Abstract [en]
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. Author
Place, publisher, year, edition, pages
Piscataway, N.J.: IEEE, 2023. Vol. 24, no 5, p. 4848-4861
Keywords [en]
Beam steering, Beam steering, Delays, extremum seeking control, hyperSurface, intelligent reflecting surfaces, metamaterial, Metasurfaces, programmable wireless environments, Receivers, Training, Transmitters, Wireless communication
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:hh:diva-51965DOI: 10.1109/TITS.2023.3241214ISI: 000936291800001Scopus ID: 2-s2.0-85149361980OAI: oai:DiVA.org:hh-51965DiVA, id: diva2:1811502
Funder
EU, Horizon 2020, EU7368762023-11-132023-11-132023-11-14Bibliographically approved