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Over-the-air federated learning (OTA-FL) exploits the inherent superposition property of wireless channels to integrate the communication and model aggregation. Though a naturally promising framework for wireless federated learning, it…

Information Theory · Computer Science 2023-09-20 Jiayu Mao , Aylin Yener

Over-the-air federated learning (OTA-FL) unifies communication and model aggregation by leveraging the inherent superposition property of the wireless medium. This strategy can enable scalable and bandwidth-efficient learning via…

Information Theory · Computer Science 2024-12-05 Jiayu Mao , Aylin Yener

This paper considers over-the-air federated learning (OTA-FL). OTA-FL exploits the superposition property of the wireless medium, and performs model aggregation over the air for free. Thus, it can greatly reduce the communication cost…

Machine Learning · Computer Science 2022-05-13 Haibo Yang , Peiwen Qiu , Jia Liu , Aylin Yener

In federated learning (FL), heterogeneity among the local dataset distributions of clients can result in unsatisfactory performance for some, leading to an unfair model. To address this challenge, we propose an over-the-air fair federated…

Machine Learning · Computer Science 2025-01-08 Shayan Mohajer Hamidi , Ali Bereyhi , Saba Asaad , H. Vincent Poor

The development of applications based on artificial intelligence and implemented over wireless networks is increasingly rapidly and is expected to grow dramatically in the future. The resulting demand for the aggregation of large amounts of…

Signal Processing · Electrical Eng. & Systems 2023-07-04 Bingnan Xiao , Xichen Yu , Wei Ni , Xin Wang , H. Vincent Poor

Distributed machine learning (ML) over wireless networks hinges on accurate channel state information (CSI) and efficient exchange of high-dimensional model updates. These demands are governed by channel coherence time and bandwidth, which…

Information Theory · Computer Science 2026-03-10 Mehdi Karbalayghareh , David J. Love , Christopher G. Brinton

Over-the-air federated learning (OTA-FL) integrates communication and model aggregation by exploiting the innate superposition property of wireless channels. The approach renders bandwidth efficient learning, but requires care in handling…

Information Theory · Computer Science 2023-09-19 Jiayu Mao , Aylin Yener

Over-the-air federated learning (OTA-FL) offers an exciting new direction over classical FL by averaging model weights using the physics of analog signal propagation. Since each participant broadcasts its model weights concurrently in time…

Federated learning (FL) has emerged as a promising framework for distributed learning, enabling collaborative model training without sharing private data. Existing wireless FL works primarily adopt two communication strategies: (1)…

Machine Learning · Computer Science 2026-04-16 Muhammad Faraz Ul Abrar , Nicolò Michelusi

Recently, Over-the-Air (OTA) computation has emerged as a promising federated learning (FL) paradigm that leverages the waveform superposition properties of the wireless channel to realize fast model updates. Prior work focused on the OTA…

Machine Learning · Computer Science 2024-04-01 Muhammad Faraz Ul Abrar , Nicolò Michelusi

Federated learning (FL) is a framework for distributed learning of centralized models. In FL, a set of edge devices train a model using their local data, while repeatedly exchanging their trained updates with a central server. This…

Machine Learning · Computer Science 2021-08-11 Tomer Sery , Nir Shlezinger , Kobi Cohen , Yonina C. Eldar

Over-the-air computation (AirComp) has recently been identified as a prominent technique to enhance communication efficiency of wireless federated learning (FL). This letter investigates the impact of channel state information (CSI)…

Information Theory · Computer Science 2023-07-25 Jiacheng Yao , Zhaohui Yang , Wei Xu , Dusit Niyato , Xiaohu You

Federated learning (FL) is a promising learning paradigm that can tackle the increasingly prominent isolated data islands problem while keeping users' data locally with privacy and security guarantees. However, FL could result in…

Information Theory · Computer Science 2022-03-30 Peng Yang , Yuning Jiang , Ting Wang , Yong Zhou , Yuanming Shi , Colin N. Jones

This paper investigates an OFDM-based over-the-air federated learning (OTA-FL) system, where multiple mobile devices, e.g., unmanned aerial vehicles (UAVs), transmit local machine learning (ML) models to a central parameter server (PS) for…

Signal Processing · Electrical Eng. & Systems 2025-08-29 Xiaoyan Ma , Shahryar Zehtabi , Taejoon Kim , Christopher G. Brinton

Privacy and bandwidth constraints have led to the use of federated learning (FL) in wireless systems, where training a machine learning (ML) model is accomplished collaboratively without sharing raw data. While using bandwidth-constrained…

Machine Learning · Computer Science 2023-10-18 Ayush Madhan-Sohini , Divin Dominic , Nazreen Shah , Ranjitha Prasad

Federated learning (FL) has recently emerged as an attractive decentralized solution for wireless networks to collaboratively train a shared model while keeping data localized. As a general approach, existing FL methods tend to assume…

Machine Learning · Computer Science 2021-04-02 Francesco Pase , Marco Giordani , Michele Zorzi

Cell-free massive MIMO is emerging as a promising technology for future wireless communication systems, which is expected to offer uniform coverage and high spectral efficiency compared to classical cellular systems. We study in this paper…

Signal Processing · Electrical Eng. & Systems 2023-09-19 Houssem Sifaou , Geoffrey Ye Li

Over-the-air (OTA) federated learning (FL) has been well recognized as a scalable paradigm that exploits the waveform superposition of the wireless multiple-access channel to aggregate model updates in a single use. Existing OTA-FL designs…

Machine Learning · Computer Science 2026-02-16 Muhammad Faraz Ul Abrar , Nicolò Michelusi

Over-the-air federated learning (OTA-FL) provides bandwidth-efficient learning by leveraging the inherent superposition property of wireless channels. Personalized federated learning balances performance for users with diverse datasets,…

Information Theory · Computer Science 2024-01-23 Jiayu Mao , Aylin Yener

While federated learning (FL) is a widely popular distributed machine learning (ML) strategy that protects data privacy, time-varying wireless network parameters and heterogeneous configurations of the wireless devices pose significant…

Machine Learning · Computer Science 2025-08-28 Ferdous Pervej , Minseok Choi , Andreas F. Molisch
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