Salem, Abdelhamid;
Wong, Kai-Kit;
Chae, Chan-Byoung;
Zhang, Yangyang;
(2025)
User Clustering for STAR-RIS Assisted Full-Duplex NOMA Communication Systems.
IEEE Transactions on Wireless Communications
p. 1.
10.1109/twc.2025.3568772.
(In press).
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Abstract
In contrast to conventional reconfigurable intelligent surface (RIS), simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) has been proposed recently to enlarge the serving area from 180o to 360o coverage. This work considers the performance of a STAR-RIS aided full-duplex (FD) non-orthogonal multiple access (NOMA) communication systems. The STAR-RIS is implemented at the cell-edge to assist the celledge users, while the cell-center users can communicate directly with a FD base station (BS). We first introduce new user clustering schemes for the downlink and uplink transmissions. Then, based on the proposed transmission schemes closed-form expressions of the ergodic rates in the downlink and uplink modes are derived taking into account the system impairments caused by the self interference at the FD-BS and the imperfect successive interference cancellation (SIC). Moreover, an optimization problem to maximize the total sum-rate is formulated and solved by optimizing the amplitudes and the phase-shifts of the STAR-RIS elements and allocating the transmit power efficiently. The performance of the proposed user clustering schemes and the optimal STAR-RIS design are investigated through numerical results.
| Type: | Article |
|---|---|
| Title: | User Clustering for STAR-RIS Assisted Full-Duplex NOMA Communication Systems |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/twc.2025.3568772 |
| Publisher version: | https://doi.org/10.1109/twc.2025.3568772 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions. |
| Keywords: | STAR-RIS, Full-duplex, NOMA, Sum-rate |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10209258 |
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