Performance Analysis of the STAR-RIS-Assisted Downlink NOMA Communication System with MRC

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2023-07-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
1739-1743
Series
IEEE Communications Letters, Volume 27, issue 7
Abstract
We discuss a simultaneously transmitting and reflecting-reconfigurable intelligent surface (STAR-RIS)-assisted downlink non-orthogonal multiple access (NOMA) communication system. STAR-RIS employs the energy splitting protocol for transmitting and reflecting the incident signals to users located on different sides of the surface. To study the impact of multiple antennas on the system performance, we perform maximum ratio combining (MRC) at NOMA users and beamforming towards STAR-RIS at the base station (BS). We model the distribution of cascaded Rician fading channels for the proposed system. Closed-form expressions of outage probability, asymptotic outage probability, and system throughput are derived. All theoretically derived results are verified via Monte Carlo simulation.
Description
Publisher Copyright: IEEE
Keywords
beamforming, Interference, Maximum ratio combining, NOMA, non-orthogonal multiple acces, outage probability, Power system reliability, Probability, reconfigurable intelligent surface, Rician channels, Signal to noise ratio, Symbols, system throughput
Other note
Citation
Singh , U , Al-Tous , H , Tirkkonen , O & Bhatnagar , M R 2023 , ' Performance Analysis of the STAR-RIS-Assisted Downlink NOMA Communication System with MRC ' , IEEE Communications Letters , vol. 27 , no. 7 , pp. 1739-1743 . https://doi.org/10.1109/LCOMM.2023.3273313