Resource Allocation for Downlink NOMA Systems: Key Techniques and Open Issues
TLDR
In this paper, the authors proposed a divide-and-next-largest-difference-based user pairing algorithm to distribute the capacity gain among the NOMA clusters in a controlled manner.Abstract:Â
This article presents advances in resource allocation for downlink non-orthogonal multiple access (NOMA) systems, focusing on user pairing and power allocation algorithms. The former pairs the users to obtain high capacity gain by exploiting the channel gain difference between the users, while the latter allocates power to users in each cluster to balance system throughput and user fairness. Additionally, the article introduces the concept of cluster fairness and proposes the divide-and-next-largest-difference-based user pairing algorithm to distribute the capacity gain among the NOMA clusters in a controlled manner. Furthermore, performance comparison between multiple-input multiple-output NOMA (MIMO-NOMA) and MIMO orthogonal multiple access (MIMO-OMA) is conducted when users have pre-defined quality of service. Simulation results are presented, which validate the advantages of NOMA over OMA. Finally, the article provides avenues for further research on resource allocation for downlink NOMA.read more
Citations
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Spectrum Sharing for 6G Integrated Satellite-Terrestrial Communication Networks Based on NOMA and CR
TL;DR: In this paper, the authors proposed a CR-NO-MA based spectrum sharing protocol for satellite-terrestrial communication networks (ISTCNs), which allows multiple satellite terminals to access both idle and busy spectrum simultaneously, which will achieve high efficiency full spectrum access.
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Impacts of imperfect SIC and imperfect hardware in performance analysis on AF non-orthogonal multiple access network
TL;DR: This paper considers relaying NOMA as existence of hardware noise and interference of imperfect SIC operation and hence degraded performance under related factors can be addressed and a closed-form formulation of outage probabilities for each user is developed.
Posted Content
Energy Efficient Beamforming Design for MISO Non-Orthogonal Multiple Access Systems
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Proceedings ArticleDOI
Outage Performance of Underlay CR-NOMA Networks with Detect-and-Forward Relaying
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Spectrum Resource and Power Allocation With Adaptive Proportional Fair User Pairing for NOMA Systems
TL;DR: Simulation results demonstrate that the NOMA techniques, basic principles, and double-objective optimization problem can not only approach the throughput performance compared with the global optimal search and the classical water-filling power allocation using matching theory but also can improve the fairness of the users.
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