| dc.contributor.author | Santamaría Caballero, Luis Ignacio | |
| dc.contributor.author | Soleymani, Mohammad | |
| dc.contributor.author | Jorswieck, Eduard | |
| dc.contributor.author | Gutiérrez Terán, Jesús | |
| dc.contributor.other | Universidad de Cantabria | es_ES |
| dc.date.accessioned | 2023-08-29T08:11:37Z | |
| dc.date.available | 2023-08-29T08:11:37Z | |
| dc.date.issued | 2023-07-19 | |
| dc.identifier.issn | 1070-9908 | |
| dc.identifier.issn | 1558-2361 | |
| dc.identifier.other | PID2019-104958RB-C43 | es_ES |
| dc.identifier.uri | https://hdl.handle.net/10902/29771 | |
| dc.description.abstract | Reconfigurable intelligent surface (RIS) architectures not limited to diagonal phase shift matrices have recently been considered to increase their flexibility in shaping the wireless channel. One of these beyond-diagonal RIS or BD-RIS architectures leads to a unitary and symmetric RIS matrix. In this letter, we consider the problem of maximizing the signal-to-noise ratio (SNR) in single and multiple antenna links assisted by a BD-RIS. The Max-SNR problem admits a closed-form solution based on the Takagi factorization of a certain complex and symmetric matrix. This allows us to solve the max-SNR problem for SISO, SIMO, and MISO channels. | es_ES |
| dc.description.sponsorship | The work of Ignacio Santamaria was supported by the Ministerio de Ciencia e Innovación and AEI (10.13039/501100011033), under Grant PID2019-104958RB C43 (ADELE). The work of Eduard Jorswieck was supported by the Federal Ministry of Education and Research (BMBF, Germany) through the Program of
Souverän. Digital. Vernetzt. joint Project 6G-RIC, under Grants 16KISK020K and 16KISK031. | es_ES |
| dc.format.extent | 4 p. | es_ES |
| dc.language.iso | eng | es_ES |
| dc.publisher | Institute of Electrical and Electronics Engineers Inc. | es_ES |
| dc.rights | © 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | es_ES |
| dc.source | IEEE Signal Processing Letters, 2023, 30, 923-926 | es_ES |
| dc.subject.other | Reconfigurable intelligent surface | es_ES |
| dc.subject.other | Takagi factorization | es_ES |
| dc.subject.other | Optimization | es_ES |
| dc.subject.other | Multiple antennas | es_ES |
| dc.subject.other | Multiple access channel | es_ES |
| dc.title | SNR maximization in beyond diagonal RIS-assisted single and multiple antenna links | es_ES |
| dc.type | info:eu-repo/semantics/article | es_ES |
| dc.relation.publisherVersion | https://doi.org/10.1109/LSP.2023.3296902 | es_ES |
| dc.rights.accessRights | openAccess | es_ES |
| dc.identifier.DOI | 10.1109/LSP.2023.3296902 | |
| dc.type.version | acceptedVersion | es_ES |
