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• W3196845503 abstract "In this paper, we consider the problem of power control for a wireless network with an arbitrarily time-varying topology, including the possible addition or removal of nodes. A data-driven design methodology that leverages graph neural networks (GNNs) is adopted in order to efficiently parametrize the power control policy mapping the channel state information (CSI) to transmit powers. The specific GNN architecture, known as random edge GNN (REGNN), defines a non-linear graph convolutional filter whose spatial weights are tied to the channel coefficients. While prior work assumed a joint training approach whereby the REGNN-based policy is shared across all topologies, this paper targets adaptation of the power control policy based on limited CSI data regarding the current topology. To this end, we propose both black-box and modular meta-learning techniques. Black-box meta-learning optimizes a general-purpose adaptation procedure via (stochastic) gradient descent, while modular meta-learning finds a set of reusable modules that can form components of a solution for any new network topology. Numerical results validate the benefits of meta-learning for power control problems over joint training schemes, and demonstrate the advantages of modular meta-learning when data availability is extremely limited." @default.
• W3196845503 created "2021-09-13" @default.
• W3196845503 creator A5017736224 @default.
• W3196845503 creator A5046394703 @default.
• W3196845503 date "2021-08-04" @default.
• W3196845503 modified "2023-09-27" @default.
• W3196845503 title "Black-Box and Modular Meta-Learning for Power Control via Random Edge Graph Neural Networks." @default.
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• W3196845503 hasPublicationYear "2021" @default.
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