DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Jeonghun | ko |
dc.contributor.author | Choi, Jinseok | ko |
dc.contributor.author | Lee, Namyoon | ko |
dc.contributor.author | Shin, Wonjae | ko |
dc.contributor.author | Poor, H. Vincent | ko |
dc.date.accessioned | 2023-10-24T06:00:59Z | - |
dc.date.available | 2023-10-24T06:00:59Z | - |
dc.date.created | 2023-10-24 | - |
dc.date.issued | 2023-03 | - |
dc.identifier.citation | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, v.22, no.3, pp.1588 - 1603 | - |
dc.identifier.issn | 1536-1276 | - |
dc.identifier.uri | http://hdl.handle.net/10203/313706 | - |
dc.description.abstract | Rate-splitting multiple access (RSMA) is a general multiple access scheme for downlink multi-antenna systems embracing both classical spatial division multiple access and more recent non-orthogonal multiple access. Finding a linear precoding strategy that maximizes the sum spectral efficiency of RSMA is a challenging yet significant problem. In this paper, we put forth a novel precoder design framework that jointly finds the linear precoders for the common and private messages for RSMA. Our approach is first to approximate the non-smooth minimum function part in the sum spectral efficiency of RSMA using a LogSumExp technique. Then, we reformulate the sum spectral efficiency maximization problem as a form of the log-sum of Rayleigh quotients to convert it into a tractable form. By interpreting the first-order optimality condition of the reformulated problem as an eigenvector-dependent nonlinear eigenvalue problem, we reveal that the leading eigenvector of the derived optimality condition is a local optimal solution. To find the leading eigenvector, we propose an algorithm inspired by a power iteration. Simulation results show that the proposed RSMA transmission strategy provides significant improvement in the sum spectral efficiency compared to the state-of-the-art RSMA transmission methods. | - |
dc.language | English | - |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC | - |
dc.title | Rate-Splitting Multiple Access for Downlink MIMO: A Generalized Power Iteration Approach | - |
dc.type | Article | - |
dc.identifier.wosid | 001049998100009 | - |
dc.identifier.scopusid | 2-s2.0-85139430479 | - |
dc.type.rims | ART | - |
dc.citation.volume | 22 | - |
dc.citation.issue | 3 | - |
dc.citation.beginningpage | 1588 | - |
dc.citation.endingpage | 1603 | - |
dc.citation.publicationname | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | - |
dc.identifier.doi | 10.1109/twc.2022.3205480 | - |
dc.contributor.localauthor | Choi, Jinseok | - |
dc.contributor.nonIdAuthor | Park, Jeonghun | - |
dc.contributor.nonIdAuthor | Lee, Namyoon | - |
dc.contributor.nonIdAuthor | Shin, Wonjae | - |
dc.contributor.nonIdAuthor | Poor, H. Vincent | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Downlink | - |
dc.subject.keywordAuthor | Precoding | - |
dc.subject.keywordAuthor | Transmitters | - |
dc.subject.keywordAuthor | MIMO communication | - |
dc.subject.keywordAuthor | Optimization | - |
dc.subject.keywordAuthor | Multiaccess communication | - |
dc.subject.keywordAuthor | Channel estimation | - |
dc.subject.keywordAuthor | Rate-splitting multiple access (RSMA) | - |
dc.subject.keywordAuthor | multi-user MIMO | - |
dc.subject.keywordAuthor | imperfect channel state information (CSI) | - |
dc.subject.keywordAuthor | sum spectral efficiency maximization | - |
dc.subject.keywordAuthor | generalized power iteration | - |
dc.subject.keywordPlus | MULTIUSER MISO SYSTEMS | - |
dc.subject.keywordPlus | SUM-RATE MAXIMIZATION | - |
dc.subject.keywordPlus | BROADCAST CHANNEL | - |
dc.subject.keywordPlus | SPECTRAL EFFICIENCY | - |
dc.subject.keywordPlus | IMPERFECT CSIT | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | TRANSMISSION | - |
dc.subject.keywordPlus | NETWORKS | - |
dc.subject.keywordPlus | STRATEGY | - |
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