Publication: Reconfigurable intelligent surface-enabled downlink NOMA
Program
School / College / Institute
College of Engineering
GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
Laboratory
GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
Laboratory
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Co-Authors
Publication Date
Language
Type
Embargo Status
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Volume Title
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Abstract
Reconfigurable intelligent surfaces (RISs) bring great potential to the advancement of 6G and beyond wireless communication technologies. RISs introduce a great degree of flexibility, allowing some sort of virtual control over the wireless channel. Exploiting the flexibility introduced by RISs, we propose a novel RIS-enabled downlink (DL) non-orthogonal multiple access (NOMA) scheme where NOMA is enabled over-the-air rather than at the base station (BS) or the receiver (Rx). Here, the RIS is partitioned into distinctive groups where each part of the RIS serves a different user equipment (UE) to perform multiple accessing. The BS transmits an unmodulated signal to the RIS, and each partition modulates the impinging signal over-the-air by introducing a phase shift according to the incoming information bits to serve the corresponding UE. First, the end-to-end system model for the proposed system is presented. Furthermore, outage probability calculations, theoretical error probability analysis, and bit error rate (BER) derivations are discussed and reinforced with comprehensive computer simulation results.
Source
Publisher
Institute of Electrical and Electronics Engineers Inc.
Subject
Electrical and electronics engineering, Computer engineering
Citation
Has Part
Source
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Book Series Title
Edition
DOI
10.1109/TWC.2024.3448246