Dai G, Huang R, Yuan J, Hu Z, Chen L, Lu J, Fan T, Wan D, Wen M, Hou T, Ji F
Publication Type: Journal article
Book Volume: 12
Article Number: 4577
Journal Issue: 22
DOI: 10.3390/electronics12224577
High effectiveness and high reliability are two fundamental concerns in data transmission. Non-orthogonal multiple-access (NOMA) technology presents a promising solution for high-speed data transmission, which has long been pursued by academia and industry. However, there is still a significant road ahead for it to effectively support a wide range of applications. This paper provides a comprehensive study, comparison, and classification of the current advanced NOMA schemes from the perspectives of single-carrier (SC) systems, multicarrier (MC) systems, reconfigurable-intelligent-surface (RIS)-assisted systems, and deep-learning (DL)-assisted systems. Specifically, system implementation issues such as the transition from SC-NOMA to MC-NOMA, the relaxation of distinct channel gains, the consideration of imperfect channel knowledge, and the mitigation of error propagation/intra-group interference are involved. To begin with, we present an overview of the state-of-the-art developments related to the advanced design of SC-NOMA. Subsequently, a generalized MC-NOMA framework that provides the diversity–multiplexing gain by enhancing users’ signal-to-interference-plus-noise ratio (SINR) is proposed for better system performance. Moreover, we delve into discussions on RIS-assisted NOMA systems, where the receiver’s SINR can be enhanced by intelligently reconfiguring the reflected signal propagations. Finally, we analyze designs that combine NOMA/RIS-NOMA with DL to achieve highly efficient data transmission. We also identify key trends and future directions in deep-learning-based NOMA frameworks, providing valuable insights for researchers in this field.
APA:
Dai, G., Huang, R., Yuan, J., Hu, Z., Chen, L., Lu, J.,... Ji, F. (2023). Towards Flawless Designs: Recent Progresses in Non-Orthogonal Multiple Access Technology. Electronics, 12(22). https://doi.org/10.3390/electronics12224577
MLA:
Dai, Gaoyuan, et al. "Towards Flawless Designs: Recent Progresses in Non-Orthogonal Multiple Access Technology." Electronics 12.22 (2023).
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