Performance of STAR-RIS-Aided RSMA Networks: Impact of Correlated Fading Channels and SIC Imperfections

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorEtel Research Group-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatorGomes, Eduardo Goncalves-
Autor(es): dc.creatorMora, Henry Ramiro Carvajal-
Autor(es): dc.creatorOlivo, Edgar Eduardo Benitez-
Data de aceite: dc.date.accessioned2025-08-21T21:57:27Z-
Data de disponibilização: dc.date.available2025-08-21T21:57:27Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1109/ACCESS.2025.3546553-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/308384-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/308384-
Descrição: dc.descriptionThis paper investigates the outage performance of the downlink of a wireless network, where a base station communicates with two users using the Rate-Splitting Multiple Access (RSMA) protocol. To overcome obstacles that block direct transmission, a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) is used to enable communication. The users are positioned on opposite sides of the STAR-RIS, which operates under a mode-switching protocol, assigning elements for either transmission or reflection. The channels are assumed to undergo Rician fading, and the system performance is analyzed considering the correlation effects caused by closely spaced STAR-RIS elements, for which the model employed to generate correlated channels is introduced. Additionally, at the users' receiver side, we consider that the decoding of users' messages is subject to imperfect successive interference cancellation (SIC). An approximate analytical expression is also derived for the scenario with uncorrelated STAR-RIS elements and imperfect SIC. Monte-Carlo simulations further explore the system performance, focusing on key parameters such as the number of STAR-RIS elements, channel-correlation factor, power allocation factors of common and private streams relative to the RSMA protocol, and error factor of imperfect SIC. This work's contributions provide a deeper understanding of the impact of correlated channels and imperfect SIC on STAR-RIS-aided networks, offering insights for optimizing performance under realistic deployment conditions.-
Descrição: dc.descriptionSão Paulo State University (UNESP) School of Engineering-
Descrição: dc.descriptionUniversidad de Las Américas (UDLA) Faculty of Engineering and Applied Sciences Networking and Telecommunications Engineering Etel Research Group-
Descrição: dc.descriptionUniversity of Campinas (UNICAMP) School of Electrical and Computer Engineering Department of Communications-
Descrição: dc.descriptionSão Paulo State University (UNESP) School of Engineering-
Formato: dc.format39826-39839-
Idioma: dc.languageen-
Relação: dc.relationIEEE Access-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCorrelated fading channels-
Palavras-chave: dc.subjectoutage performance-
Palavras-chave: dc.subjectrate-splitting multiple access-
Palavras-chave: dc.subjectsimultaneously transmitting and reflecting reconfigurable intelligent surfaces-
Palavras-chave: dc.subjectsuccessive interference cancellation-
Título: dc.titlePerformance of STAR-RIS-Aided RSMA Networks: Impact of Correlated Fading Channels and SIC Imperfections-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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