{"title":"Optimal MIMO Transmission for Rate-Splitting Multiple Access in Multi-Cell Environments","authors":"Yoonjin Lee;Insoo Hwang;Hongseok Kim;Chan-Byoung Chae","doi":"10.1109/LWC.2025.3536448","DOIUrl":null,"url":null,"abstract":"In this letter, we propose an optimal multiple input multiple output (MIMO) strategy for rate-splitting multiple access (RSMA) with private and common messages under a zero-interference constraint in a multi-cell MIMO system environment. We compare the proposed MIMO strategy for RSMA with the minimum mean squared error-interference rejection combining (MMSE-IRC) technique used in 5G NR in terms of sum rate. Extensive evaluation results confirm the performance gain of the proposed optimal RSMA-MIMO, which is expected to provide insight into system design for 6G RSMA.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"14 4","pages":"1154-1158"},"PeriodicalIF":5.5000,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Wireless Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10856843/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
In this letter, we propose an optimal multiple input multiple output (MIMO) strategy for rate-splitting multiple access (RSMA) with private and common messages under a zero-interference constraint in a multi-cell MIMO system environment. We compare the proposed MIMO strategy for RSMA with the minimum mean squared error-interference rejection combining (MMSE-IRC) technique used in 5G NR in terms of sum rate. Extensive evaluation results confirm the performance gain of the proposed optimal RSMA-MIMO, which is expected to provide insight into system design for 6G RSMA.
期刊介绍：
IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of wireless communication systems.
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