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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Machine Learning-Empowered Beam Management for mmWave-NOMA in Multi-UAVs Networks
TL;DR: The proposed beam management aims to achieve efficient beam tracking and NOMA-grouping-aware analog beamforming optimization to facilitate mmWave-NOMA transmissions by judiciously utilizing angular domain information (ADI).
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Low Complexity Based QR-LRL OSIC Detector for Downlink NOMA-MIMO Systems
TL;DR: In this paper, the authors proposed low-complexity based QR-LRL detector to overcome jointly the interuser interference and interantenna interference for NOMA-MIMO downlink systems.
Proceedings ArticleDOI
Performance Comparison Among Hybrid NOMA Schemes Focusing on Outage Performance and Sum Rate Arrangement
TL;DR: In this article, the performance analysis of hybrid NOMA schemes for 5G and beyond wireless communication has been performed and the sum rate and outage probability has been derived for all the schemes.
Proceedings ArticleDOI
Joint Power Allocation for Non-orthogonal Multiple Access in Wireless Backhaul Networks
TL;DR: Simulation results demonstrate that the proposed NOMA schemes are effective in improving the throughput and outperforms the conventional orthogonal multiple access scheme under different network settings.
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Secrecy Analysis of NOMA-Based Integrated Satellite-Multiple UAV Networks under Nonideal Hardware and Colluding Scheme
TL;DR: The asymptotic expression for the SOP is derived, which gives fast ways to evaluate the benefit of the NOMA scheme and the impact of nonideal hardware impairments on the Sop.
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