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- Publisher Website: 10.1109/LWC.2022.3219020
- Scopus: eid_2-s2.0-85141561028
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Article: Coupled Phase-Shift STAR-RISs: A General Optimization Framework
Title | Coupled Phase-Shift STAR-RISs: A General Optimization Framework |
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Authors | |
Keywords | Coupled phase shifts karush-Kuhn-Tucker (KKT) simultaneous transmission and reflection (STAR) |
Issue Date | 2023 |
Citation | IEEE Wireless Communications Letters, 2023, v. 12, n. 2, p. 207-211 How to Cite? |
Abstract | A general optimization framework is proposed for simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) with coupled phase shifts, which converges to the Karush-Kuhn-Tucker (KKT) optimal solution under some mild conditions. More particularly, the amplitude and phase-shift coefficients of STAR-RISs are optimized alternately in closed form. To demonstrate the effectiveness of the proposed optimization framework, the throughput maximization problem is considered in a case study. It is rigorously proved that the KKT optimal solution is obtained. Numerical results confirm the effectiveness of the proposed optimization framework compared to baseline schemes. |
Persistent Identifier | http://hdl.handle.net/10722/349817 |
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 2.872 |
DC Field | Value | Language |
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dc.contributor.author | Wang, Zhaolin | - |
dc.contributor.author | Mu, Xidong | - |
dc.contributor.author | Liu, Yuanwei | - |
dc.contributor.author | Schober, Robert | - |
dc.date.accessioned | 2024-10-17T07:01:01Z | - |
dc.date.available | 2024-10-17T07:01:01Z | - |
dc.date.issued | 2023 | - |
dc.identifier.citation | IEEE Wireless Communications Letters, 2023, v. 12, n. 2, p. 207-211 | - |
dc.identifier.issn | 2162-2337 | - |
dc.identifier.uri | http://hdl.handle.net/10722/349817 | - |
dc.description.abstract | A general optimization framework is proposed for simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) with coupled phase shifts, which converges to the Karush-Kuhn-Tucker (KKT) optimal solution under some mild conditions. More particularly, the amplitude and phase-shift coefficients of STAR-RISs are optimized alternately in closed form. To demonstrate the effectiveness of the proposed optimization framework, the throughput maximization problem is considered in a case study. It is rigorously proved that the KKT optimal solution is obtained. Numerical results confirm the effectiveness of the proposed optimization framework compared to baseline schemes. | - |
dc.language | eng | - |
dc.relation.ispartof | IEEE Wireless Communications Letters | - |
dc.subject | Coupled phase shifts | - |
dc.subject | karush-Kuhn-Tucker (KKT) | - |
dc.subject | simultaneous transmission and reflection (STAR) | - |
dc.title | Coupled Phase-Shift STAR-RISs: A General Optimization Framework | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/LWC.2022.3219020 | - |
dc.identifier.scopus | eid_2-s2.0-85141561028 | - |
dc.identifier.volume | 12 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 207 | - |
dc.identifier.epage | 211 | - |
dc.identifier.eissn | 2162-2345 | - |