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- Publisher Website: 10.1109/PIMRC48278.2020.9217117
- Scopus: eid_2-s2.0-85094136006
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Conference Paper: Fair non-orthogonal multiple access communication systems with reconfigurable intelligent surface
Title | Fair non-orthogonal multiple access communication systems with reconfigurable intelligent surface |
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Authors | |
Keywords | Nonorthogonal multiple access Phase shift optimization Power allocation Reconfigurable intelligent surface |
Issue Date | 2020 |
Citation | IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, 2020, v. 2020-August, article no. 9217117 How to Cite? |
Abstract | Reconfigurable intelligent surface (RIS) is a promising solution to improve spectrum efficiency and promote cost- effectively wireless communication in the future. In this paper, RIS is deployed between a single-antenna base station (BS) and multiple single-antenna users to assist downlink non-orthogonal multiple access (NOMA) transmission. Considering the fairness among users, our goal is jointly optimizing the power allocation, decoding order, and the phase shifts to maximize the minimum user rate under total power constraint. To solve this minimum rate maximization problem, the optimal power allocation and the optimal fair rate are first revealed with a given phase shift vector. Then, the phase shift vector is optimized via maximizing the worst channel gain, which can determine the lower bound of the fair rate. The phase shift vector optimization problem is relaxed to a convex semidefinite program (SDP) and an efficient algorithm is proposed to obtain a rank-one solution. Simulation results show that our proposed algorithm can enhance the fair rate compared to the conventional scheme. |
Persistent Identifier | http://hdl.handle.net/10722/349479 |
DC Field | Value | Language |
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dc.contributor.author | Xu, Yun | - |
dc.contributor.author | Chen, Ming | - |
dc.contributor.author | Yang, Zhaohui | - |
dc.contributor.author | Liu, Yuanwei | - |
dc.contributor.author | Long, Hui | - |
dc.contributor.author | Shikh-Bahaei, Mohammad | - |
dc.date.accessioned | 2024-10-17T06:58:48Z | - |
dc.date.available | 2024-10-17T06:58:48Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, 2020, v. 2020-August, article no. 9217117 | - |
dc.identifier.uri | http://hdl.handle.net/10722/349479 | - |
dc.description.abstract | Reconfigurable intelligent surface (RIS) is a promising solution to improve spectrum efficiency and promote cost- effectively wireless communication in the future. In this paper, RIS is deployed between a single-antenna base station (BS) and multiple single-antenna users to assist downlink non-orthogonal multiple access (NOMA) transmission. Considering the fairness among users, our goal is jointly optimizing the power allocation, decoding order, and the phase shifts to maximize the minimum user rate under total power constraint. To solve this minimum rate maximization problem, the optimal power allocation and the optimal fair rate are first revealed with a given phase shift vector. Then, the phase shift vector is optimized via maximizing the worst channel gain, which can determine the lower bound of the fair rate. The phase shift vector optimization problem is relaxed to a convex semidefinite program (SDP) and an efficient algorithm is proposed to obtain a rank-one solution. Simulation results show that our proposed algorithm can enhance the fair rate compared to the conventional scheme. | - |
dc.language | eng | - |
dc.relation.ispartof | IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC | - |
dc.subject | Nonorthogonal multiple access | - |
dc.subject | Phase shift optimization | - |
dc.subject | Power allocation | - |
dc.subject | Reconfigurable intelligent surface | - |
dc.title | Fair non-orthogonal multiple access communication systems with reconfigurable intelligent surface | - |
dc.type | Conference_Paper | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/PIMRC48278.2020.9217117 | - |
dc.identifier.scopus | eid_2-s2.0-85094136006 | - |
dc.identifier.volume | 2020-August | - |
dc.identifier.spage | article no. 9217117 | - |
dc.identifier.epage | article no. 9217117 | - |