A Self-Supervised GCN Model for Link Scheduling in Downlink NOMA Networks





GNNs, graph convolutional neural networks, Non-orthogonal multiple access (NOMA), link scheduling.


INTRODUCTION: Downlink Non-Orthogonal Multiple Access (NOMA) networks pose challenges in optimizing power allocation efficiency due to their complex design.
OBJECTIVES: This paper aims to propose a novel scheme utilizing Graph Neural Networks to address the optimization challenges in downlink NOMA networks.
METHODS: We transform the optimization problem into an optimal link scheduling problem by modeling the network as a bipartite graph. Leveraging Graph Convolutional Networks, we employ self-supervised learning to learn the optimal link scheduling strategy.
RESULTS: Simulation results showcase a significant enhancement in power allocation efficiency in downlink NOMA networks, evidenced by notable improvements in both average accuracy and generalization ability. CONCLUSION: Our proposed scheme demonstrates promising potential in substantially augmenting power allocation efficiency within downlink NOMA networks, offering a promising avenue for further research and application in wireless communications.


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How to Cite

C. Zhang, F. Fang, and C. Zhang, “A Self-Supervised GCN Model for Link Scheduling in Downlink NOMA Networks”, EAI Endorsed Trans IoT, vol. 10, May 2024.