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

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openAccess

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Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2023-07-01

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Mcode

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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

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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