Digital RIS (DRIS) : the future of digital beam management in RIS-assisted OWC systems

Ndjiongue, Alain R. and Ngatched, Telex M.N. and Dobre, Octavia A. and Haas, Harald (2022) Digital RIS (DRIS) : the future of digital beam management in RIS-assisted OWC systems. Journal of Lightwave Technology, 40 (16). pp. 5597-5604. ISSN 0733-8724 (https://doi.org/10.1109/jlt.2022.3176762)

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Abstract

Reconfigurable intelligent surfaces (RIS) have been recently introduced to optical wireless communication (OWC) networks to resolve skip areas and improve the signal-to-noise ratio at the user's end. In OWC networks, RIS are based on mirrors or metasurfaces. Metasurfaces have evolved significantly over the last few years. As a result, coding, digital, programmable, and information metamaterials have been developed. The advantage of these materials is that they can enable digital signal processing (DSP) techniques. For the first time, this paper proposes the use of digital RIS (DRIS) in OWC systems. We discuss the concept of DRIS and the application of DSP methods to the physical material. In addition, we examine metamaterials for optical DRIS with liquid crystals serving as the front row material. Finally, we present a design example and discuss future research directions.

  • Item type:Article
    ID code:82283
    Dates:
    Date
    Event
    15 August 2022
    Published
    23 May 2022
    Published Online
    17 May 2022
    Accepted
    Notes:© 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Science > Physics > Optics. Light
    Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:08 Sep 2022 15:11
    Last modified:14 Nov 2024 12:04
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/82283
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