Over-the-Air Federated Learning and Optimization
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Abstract (arXiv)
Federated learning (FL), as an emerging distributed machine learning paradigm, allows a mass of edge devices to collaboratively train a global model while preserving privacy. In this tutorial, we focus on FL via over-the-air computation (AirComp), which is proposed to reduce the communication overhead for FL over wireless networks at the cost of compromising in the learning performance due to model aggregation error arising from channel fading and noise. We first provide a comprehensive study on the convergence of AirComp-based FedAvg (AirFedAvg) algorithms under both strongly convex and non-convex settings with constant and diminishing learning rates in the presence of data heterogeneity. Through convergence and asymptotic analysis, we characterize the impact of aggregation error on the convergence bound and provide insights for system design with convergence guarantees. Then we derive convergence rates for AirFedAvg algorithms for strongly convex and non-convex objectives. For different types of local updates that can be transmitted by edge devices (i.e., local model, gradient, and model difference), we reveal that transmitting local model in AirFedAvg may cause divergence in the training procedure. In addition, we consider more practical signal processing schemes to improve the communication efficiency and further extend the convergence analysis to different forms of model aggregation error caused by these signal processing schemes. Extensive simulation results under different settings of objective functions, transmitted local information, and communication schemes verify the theoretical conclusions.
Key facts. Cited by 10 papers in the map (data through 7 Oct 2026). Builds on 122 of its 171 references that are in the map. First posted on arXiv 16 Oct 2023.
Builds on
122 of 171 references.
References · 122
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38 more
- 2018Local SGD Converges Fast and Communicates Littlecited by 595
- 2021Towards Personalized Federated Learningcited by 462
- 2019Agnostic Federated Learningcited by 451
- 2018Adaptive Federated Learning in Resource Constrained Edge Computing Systemscited by 408
- 2019Fair Resource Allocation in Federated Learningcited by 389
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- 2019FedPAQ: A Communication-Efficient Federated Learning Method with Periodic Averaging and Quantizationcited by 349
- 2019Lookahead Optimizer: k steps forward, 1 step backcited by 333
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- 2017How to Escape Saddle Points Efficientlycited by 284
- 2018Parallel Restarted SGD with Faster Convergence and Less Communication: Demystifying Why Model Averaging Works for Deep Learningcited by 277
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- 2018Federated Learning via Over-the-Air Computationcited by 215
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- 2020Personalized Federated Learning with First Order Model Optimizationcited by 201
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- 2019Federated Learning over Wireless Fading Channelscited by 178
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- 2020One-Bit Over-the-Air Aggregation for Communication-Efficient Federated Edge Learning: Design and Convergence Analysiscited by 108
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50 most cited of 122 All 122 (JSON)
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Citing papers per year: 2023: 1; 2024: 4; 2025: 3; 2026: 2.
10 papers.
- 2024A Survey on Integrated Sensing, Communication, and Computationcited by 12
- 2024Satellite Federated Edge Learning: Architecture Design and Convergence Analysiscited by 10
- 2025Biased Federated Learning under Wireless Heterogeneitycited by 4
- 2025Optimal Transceiver Design in Over-the-Air Federated Distillationcited by 2
- 2023Federated Learning over Hierarchical Wireless Networks: Training Latency Minimization via Submodel Partitioningcited by 1
- 2024Hierarchical Learning and Computing over Space-Ground Integrated Networkscited by 1
- 2025Non-Convex Over-the-Air Heterogeneous Federated Learning: A Bias-Variance Trade-offcited by 1
- 2024A Green Multi-Attribute Client Selection for Over-The-Air Federated Learning: A Grey-Wolf-Optimizer Approachcited by 0
- 2026SCENE OTA-FD: Self-Centering Noncoherent Estimator for Over-the-Air Federated Distillationcited by 0
- 2026Resource-Element Energy Difference for Noncoherent Over-the-Air Federated Learningcited by 0
- 2026Resource-Element Energy Difference for Noncoherent Over-the-Air Federated Learning8 May 2026
- 2026SCENE OTA-FD: Self-Centering Noncoherent Estimator for Over-the-Air Federated Distillation17 Feb 2026
- 2025Non-Convex Over-the-Air Heterogeneous Federated Learning: A Bias-Variance Trade-off30 Oct 2025
- 2025Optimal Transceiver Design in Over-the-Air Federated Distillation21 Jul 2025
- 2025Biased Federated Learning under Wireless Heterogeneity8 Mar 2025
- 2024A Green Multi-Attribute Client Selection for Over-The-Air Federated Learning: A Grey-Wolf-Optimizer Approach16 Sep 2024
- 2024Hierarchical Learning and Computing over Space-Ground Integrated Networks26 Aug 2024
- 2024A Survey on Integrated Sensing, Communication, and Computation15 Aug 2024
- 2024Satellite Federated Edge Learning: Architecture Design and Convergence Analysis2 Apr 2024
- 2023Federated Learning over Hierarchical Wireless Networks: Training Latency Minimization via Submodel Partitioning27 Oct 2023