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Open AccessJournal ArticleDOI

Investigation on Evolving Single-Carrier NOMA Into Multi-Carrier NOMA in 5G

TLDR
This paper reveals that the NOMA techniques have evolved from single-carrier NomA (SC-NOMA) into multi- carrier NOMa (MC-N OMA), and comprehensively investigated on the basic principles, enabling schemes and evaluations of the two most promising MC-NomA techniques, namely sparse code multiple access (SCMA) and pattern division multiple access(PDMA).
Abstract
Non-orthogonal multiple access (NOMA) is one promising technology, which provides high system capacity, low latency, and massive connectivity, to address several challenges in the fifth-generation wireless systems. In this paper, we first reveal that the NOMA techniques have evolved from single-carrier NOMA (SC-NOMA) into multi-carrier NOMA (MC-NOMA). Then, we comprehensively investigated on the basic principles, enabling schemes and evaluations of the two most promising MC-NOMA techniques, namely sparse code multiple access (SCMA) and pattern division multiple access (PDMA). Meanwhile, we consider that the research challenges of SCMA and PDMA might be addressed with the stimulation of the advanced and matured progress in SC-NOMA. Finally, yet importantly, we investigate the emerging applications, and point out the future research trends of the MC-NOMA techniques, which could be straightforwardly inspired by the various deployments of SC-NOMA.

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Citations
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Book Chapter

Non-Orthogonal Multiple Access (NOMA) for cellular future radio access

TL;DR: Considering the trend in 5G, achieving significant gains in capacity and system throughput performance is a high priority requirement in view of the recent exponential increase in the volume of mobile traffic and the proposed system should be able to support enhanced delay-sensitive high-volume services.
Journal ArticleDOI

A Survey of Rate-Optimal Power Domain NOMA With Enabling Technologies of Future Wireless Networks

TL;DR: This paper surveys the different rate optimization scenarios studied in the literature when PD-NOMA is combined with one or more of the candidate schemes and technologies for B5G networks including multiple-input-single-output (MISO), multiple- input-multiple- Output (MIMO), massive-MIMo), advanced antenna architectures, higher frequency millimeter-wave (mmWave) and terahertz (THz) communications.
Journal ArticleDOI

Enabling Technologies for Ultra-Reliable and Low Latency Communications: From PHY and MAC Layer Perspectives

TL;DR: This paper evaluates the relevant PHY and MAC techniques for their ability to improve the reliability and reduce the latency and identifies that enabling long-term evolution to coexist in the unlicensed spectrum is also a potential enabler of URLLC in theUnlicensed band.
Journal ArticleDOI

A Deep Learning-Based Approach to Power Minimization in Multi-Carrier NOMA With SWIPT

TL;DR: The joint downlink resource allocation problem for a SWIPT-enabled MC-NOMA system with time switching-based receivers is investigated, where pattern division multiple access (PDMA) technique is employed.
Journal ArticleDOI

Sparse Vector Coding-Based Multi-Carrier NOMA for In-Home Health Networks

TL;DR: This article proposes a sparse vector coding-based NOMA (SVC-NOMA) to suppress the inter-carrier interference (ICI) from neighboring carriers and finds that there is a trade-off between SVC-nOMA’s ICI suppression ability and the system capacity performance.
References
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Journal ArticleDOI

On the Performance of Non-Orthogonal Multiple Access in 5G Systems with Randomly Deployed Users

TL;DR: In this letter, the performance of non-orthogonal multiple access (NOMA) is investigated in a cellular downlink scenario with randomly deployed users and developed analytical results show that NOMA can achieve superior performance in terms of ergodic sum rates; however, the outage performance of N OMA depends critically on the choices of the users' targeted data rates and allocated power.
Journal ArticleDOI

Impact of User Pairing on 5G Nonorthogonal Multiple-Access Downlink Transmissions

TL;DR: Both analytical and numerical results are provided to demonstrate that F-NOMA can offer a larger sum rate than orthogonal MA, and the performance gain of F- NOMA over conventional MA can be further enlarged by selecting users whose channel conditions are more distinctive.
Posted Content

A Survey on Non-Orthogonal Multiple Access for 5G Networks: Research Challenges and Future Trends

TL;DR: In this paper, the authors provide an overview of the latest NOMA research and innovations as well as their applications in 5G wireless networks and discuss future research challenges regarding 5G and beyond.
Journal ArticleDOI

Power-Domain Non-Orthogonal Multiple Access (NOMA) in 5G Systems: Potentials and Challenges

TL;DR: In this paper, the authors comprehensively survey the recent progress of NOMA in 5G systems, reviewing the state-of-the-art capacity analysis, power allocation strategies, user fairness, and user-pairing schemes in NOMAs.
Proceedings ArticleDOI

System-level performance evaluation of downlink non-orthogonal multiple access (NOMA)

TL;DR: It is shown under multiple configurations that the system-level performance achieved by NOMA is superior to that for OMA, and key link adaptation functionalities of the LTE radio interface such as adaptive modulation and coding, time/frequency-domain scheduling, and outer loop link adaptation are shown.
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1.What is the background and historical development of NOMA in the context of 5G and B5G technologies?

The paper discusses the evolution of NOMA techniques from single-carrier NOMA (SC-NOMA) to multi-carrier NOMA (MC-NOMA) in the context of 5G and B5G technologies.