Reconfigurable Intelligent Surface-Assisted Backscatter Communication: A New Frontier for Enabling 6G IoT NetworksShow others and affiliations
2022 (English)In: IEEE wireless communications, ISSN 1536-1284, E-ISSN 1558-0687, Vol. 29, no 6, p. 96-103Article in journal (Refereed) Published
Abstract [en]
Backscatter Communication (BackCom), which is based on passive reflection and modulation of an incident radio-frequency (RF) wave, has emerged as a cutting-edge technological paradigm for self-sustainable Internet-of-things (IoT). Nevertheless, contemporary BackCom systems are limited to short-range and low data rate applications only, rendering them insufficient on their own to support pervasive connectivity among the massive number of IoT devices. Meanwhile, wireless networks are rapidly evolving toward the smart radio paradigm. In this regard, reconfigurable intelligent surfaces (RISs) have come to the forefront to transform the wireless propagation environment into a fully controllable and customizable space in a cost-effective and energy-efficient manner. Targeting the sixth-generation (6G) horizon, we anticipate the integration of RISs into BackCom systems as a new frontier for enabling 6G IoT networks. In this article, for the first time in the open literature, we provide a tutorial overview of RIS-assisted BackCom (RIS-BackCom) systems. Specifically, we introduce the three different variants of RIS-Back- Com and identify the potential improvements that can be achieved by incorporating RISs into Back- Com systems. In addition, owing to the unrivaled effectiveness of non-orthogonal multiple access (NOMA), we present a case study on a RIS-assisted NOMA-enhanced BackCom system. Finally, we outline the way forward for translating this disruptive concept into real-world applications.
Place, publisher, year, edition, pages
2022. Vol. 29, no 6, p. 96-103
Keywords [en]
Backscatter, Internet of Things, Radio frequency, PIN photodiodes, RF signals, 6G mobile communication, Costs
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:miun:diva-46613DOI: 10.1109/MWC.009.2100423ISI: 000886857200001Scopus ID: 2-s2.0-85131821131OAI: oai:DiVA.org:miun-46613DiVA, id: diva2:1717634
2022-12-092022-12-092022-12-30Bibliographically approved