Results 11 to 20 of about 56,509 (94)

Dynamic User Clustering and Power Allocation for Uplink and Downlink Non-Orthogonal Multiple Access (NOMA) Systems [PDF]

open access: goldIEEE Access, 2016
Non-orthogonal multiple access (NOMA) has recently been considered as a key enabling technique for 5G cellular systems. In NOMA, by exploiting the channel gain differences, multiple users are multiplexed into transmission power domain and then non ...
Md Shipon Ali   +2 more
openalex   +2 more sources

Non-Orthogonal Multiple Access Enhanced Multi-User Semantic Communication [PDF]

open access: yesIEEE Transactions on Cognitive Communications and Networking, 2023
Semantic communication has served as a novel paradigm and attracted a broad interest from researchers. One critical aspect of it is the multi-user semantic communication theory, which can further enhance its application for the practical network ...
Weizhi Li   +5 more
semanticscholar   +1 more source

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

open access: yesIEEE Journal on Selected Areas in Communications, 2017
Non-orthogonal multiple access (NOMA) is an essential enabling technology for the fifth-generation (5G) wireless networks to meet the heterogeneous demands on low latency, high reliability, massive connectivity, improved fairness, and high throughput ...
Z. Ding   +5 more
semanticscholar   +1 more source

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

open access: yesIEEE Communications Surveys and Tutorials, 2016
Non-orthogonal multiple access (NOMA) is one of the promising radio access techniques for performance enhancement in next-generation cellular communications.
S. Islam, N. Avazov, O. Dobre, K. Kwak
semanticscholar   +1 more source

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

open access: yesIEEE Signal Processing Letters, 2014
In this letter, the performance of non-orthogonal multiple access (NOMA) is investigated in a cellular downlink scenario with randomly deployed users. The developed analytical results show that NOMA can achieve superior performance in terms of ergodic ...
Z. Ding   +3 more
semanticscholar   +1 more source

Cooperative Non-Orthogonal Multiple Access in 5G Systems [PDF]

open access: yesIEEE Communications Letters, 2014
Non-orthogonal multiple access (NOMA) has received considerable recent attention as a promising candidate for 5G systems. A key feature of NOMA is that users with better channel conditions have prior information about the messages of other users.
Member Ieee Zhiguo Ding   +2 more
semanticscholar   +1 more source

Application of Non-Orthogonal Multiple Access in LTE and 5G Networks [PDF]

open access: yesIEEE Communications Magazine, 2015
As the latest member of the multiple access family, non-orthogonal multiple access (NOMA) has been recently proposed for 3GPP LTE and is envisioned to be an essential component of 5G mobile networks.
Z. Ding   +6 more
semanticscholar   +1 more source

RIS Partition-Assisted Non-Orthogonal Multiple Access (NOMA) and Quadrature-NOMA With Imperfect SIC

open access: yesIEEE Transactions on Wireless Communications, 2023
Reconfigurable intelligent surface (RIS)-assisted power-domain non-orthogonal multiple access (PD-NOMA) system has emerged as a revolutionary technology to enhance the spectrum efficiency for future wireless networks.
Ankita Chauhan   +2 more
semanticscholar   +1 more source

Exploiting Semantic Communication for Non-Orthogonal Multiple Access [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2022
A novel semantics-empowered two-user uplink non-orthogonal multiple access (NOMA) framework is proposed for resource efficiency enhancement. More particularly, a secondary far user (F-user) employs the semantic communication (SemCom) while a primary near
Xidong Mu, Yuanwei Liu
semanticscholar   +1 more source

Cooperative Non-orthogonal Multiple Access With Simultaneous Wireless Information and Power Transfer [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2015
In this paper, the application of simultaneous wireless information and power transfer (SWIPT) to nonorthogonal multiple access (NOMA) networks in which users are spatially randomly located is investigated.
Yuanwei Liu   +3 more
semanticscholar   +1 more source

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