Results 11 to 20 of about 26,640 (235)
Downlink Non-Orthogonal Multiple Access (NOMA) in Poisson Networks [PDF]
IEEE Transactions on Communications, 2019 A network model is considered where Poisson distributed base stations transmit to $N$ power-domain non-orthogonal multiple access (NOMA) users (UEs) each {that employ successive interference cancellation (SIC) for decoding}. We propose three models for the clustering of NOMA UEs and consider two different ordering techniques for the NOMA UEs: mean ...
Konpal Shaukat Ali +4 more
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On Power Minimization for Non-orthogonal Multiple Access (NOMA)
IEEE Communications Letters, 2016 We formulate a power optimization problem for non-orthogonal multiple access systems mathematically, and prove its NP-hardness. For tackling the problem, we first identify a convex problem by relaxation. Based on this convexity, we then propose an efficient “relax-then-adjust” algorithm and provide results of performance evaluation.
Lei Lei, Di Yuan, Peter Varbrand
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Non-Orthogonal Multiple Access (NOMA) for Underwater Acoustic Communication [PDF]
2018 IEEE 88th Vehicular Technology Conference (VTC-Fall), 2018 In this paper we investigate the application of the non-orthogonal multiple access (NOMA) technique for multiuser underwater acoustic (UWA) communication. The NOMA scheme can be implemented using either orthogonal frequency division multiplexing (OFDM) or filterbank multicarrier (FBMC) modulation for waveform shaping.
Bocus, Junaid +2 more
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Partial Non-Orthogonal Multiple Access (NOMA) in Downlink Poisson Networks [PDF]
IEEE Transactions on Wireless Communications, 2020 Non-orthogonal multiple access (NOMA) allows users sharing a resource-block to efficiently reuse spectrum and improve cell sum rate $\mathcal{R}_{\rm tot}$ at the expense of increased interference. Orthogonal multiple access (OMA), on the other hand, guarantees higher coverage.
Konpal Shaukat Ali +2 more
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Power Allocation Evaluation for Downlink Non-Orthogonal Multiple Access (NOMA) [PDF]
International Journal of Advanced Computer Science and Applications, 2020 Fifth-generation of wireless cellular systems has the potential to increase capacity, spectral efficiency, and fairness among users. The Non-Orthogonal Multiple Access based wireless networks (NOMA) is the next generation multiplexing technique. NOMA breaks the orthogonality of traditional multiple access to allow multiple users to share the same radio
Wajd Fahad Alghasmari, Laila Nassef
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Power-Domain Non-Orthogonal Multiple Access (NOMA) in 5G Systems: Potentials and Challenges [PDF]
IEEE 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
Dynamic User Clustering and Power Allocation for Uplink and Downlink Non-Orthogonal Multiple Access (NOMA) Systems [PDF]
IEEE 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, H. Tabassum, E. Hossain
semanticscholar +1 more source
Non-Orthogonal Multiple Access (NOMA) for 5G Networks
, 2016 In this chapter, we explore the concept of non-orthogonal multiple access (NOMA) scheme for the future radio access for 5G. We first provide the fundamentals of the technique for both downlink and uplink channels and then discuss optimizing the network ...
R. C. Kizilirmak
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RIS Partition-Assisted Non-Orthogonal Multiple Access (NOMA) and Quadrature-NOMA With Imperfect SIC
IEEE 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
Joint Power Allocation and Beamforming for Non-Orthogonal Multiple Access (NOMA) in 5G Millimeter Wave Communications [PDF]
IEEE Transactions on Wireless Communications, 2017 In this paper, we explore non-orthogonal multiple access (NOMA) in millimeter-wave (mm-wave) communications (mm-wave-NOMA). In particular, we consider a typical problem, i.e., maximization of the sum rate of a 2-user mm-wave-NOMA system. In this problem,
Zhenyu Xiao +4 more
semanticscholar +1 more source