{"title":"The Road to Next-Generation Multiple Access: A 50-Year Tutorial Review","authors":"Yuanwei Liu;Chongjun Ouyang;Zhiguo Ding;Robert Schober","doi":"10.1109/JPROC.2024.3476675","DOIUrl":null,"url":null,"abstract":"The evolution of wireless communications has been significantly influenced by remarkable advancements in multiple access (MA) technologies over the past five decades, shaping the landscape of modern connectivity. Within this context, a comprehensive tutorial review is presented, focusing on representative MA techniques developed over the past 50 years. The following areas are explored: 1) the foundational principles and information-theoretic capacity limits of power-domain nonorthogonal multiple access (NOMA) are characterized, along with its extension to multiple-input multiple-output (MIMO)-NOMA; 2) several MA transmission schemes exploiting the spatial domain are investigated, encompassing both conventional space-division multiple access (SDMA)/MIMO-NOMA systems and near-field MA systems utilizing spherical-wave propagation models; 3) application of NOMA to integrated sensing and communications (ISAC) systems is studied. This includes an introduction to typical NOMA-based downlink (DL)/uplink (UL) ISAC frameworks, followed by an evaluation of their performance limits using a mutual information (MI)-based analytical framework; and 4) major issues and research opportunities associated with the integration of MA with other emerging technologies are identified to facilitate MA in the next-generation networks, i.e., next-generation multiple access (NGMA). Throughout this article, promising directions are highlighted to inspire future research endeavors in the realm of MA and NGMA.","PeriodicalId":20556,"journal":{"name":"Proceedings of the IEEE","volume":"112 9","pages":"1100-1148"},"PeriodicalIF":23.2000,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of the IEEE","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10729214/","RegionNum":1,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
The evolution of wireless communications has been significantly influenced by remarkable advancements in multiple access (MA) technologies over the past five decades, shaping the landscape of modern connectivity. Within this context, a comprehensive tutorial review is presented, focusing on representative MA techniques developed over the past 50 years. The following areas are explored: 1) the foundational principles and information-theoretic capacity limits of power-domain nonorthogonal multiple access (NOMA) are characterized, along with its extension to multiple-input multiple-output (MIMO)-NOMA; 2) several MA transmission schemes exploiting the spatial domain are investigated, encompassing both conventional space-division multiple access (SDMA)/MIMO-NOMA systems and near-field MA systems utilizing spherical-wave propagation models; 3) application of NOMA to integrated sensing and communications (ISAC) systems is studied. This includes an introduction to typical NOMA-based downlink (DL)/uplink (UL) ISAC frameworks, followed by an evaluation of their performance limits using a mutual information (MI)-based analytical framework; and 4) major issues and research opportunities associated with the integration of MA with other emerging technologies are identified to facilitate MA in the next-generation networks, i.e., next-generation multiple access (NGMA). Throughout this article, promising directions are highlighted to inspire future research endeavors in the realm of MA and NGMA.
期刊介绍:
Proceedings of the IEEE is the leading journal to provide in-depth review, survey, and tutorial coverage of the technical developments in electronics, electrical and computer engineering, and computer science. Consistently ranked as one of the top journals by Impact Factor, Article Influence Score and more, the journal serves as a trusted resource for engineers around the world.