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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 Computation is a beyond-5G communication strategy that has recently been shown to be useful for the decentralized training of machine learning models due to its efficiency. In this paper, we propose an Over-the-Air federated…

Machine Learning · Computer Science 2024-03-08 Halil Yigit Oksuz , Fabio Molinari , Henning Sprekeler , Joerg Raisch

We study over-the-air (OTA) federated learning (FL) for energy harvesting devices with heterogeneous data distribution over wireless fading multiple access channel (MAC). To address the impact of low energy arrivals and data heterogeneity…

Machine Learning · Computer Science 2025-11-13 Furkan Bagci , Busra Tegin , Mohammad Kazemi , Tolga M. Duman

Over-the-air federated learning (OTA-FL) is an emerging technique to reduce the computation and communication overload at the PS caused by the orthogonal transmissions of the model updates in conventional federated learning (FL). This…

Information Theory · Computer Science 2023-05-29 Saba Asaad , Hina Tabassum , Chongjun Ouyang , Ping Wang

Over-the-air (OTA) federated learning (FL) effectively utilizes communication bandwidth, yet it is vulnerable to errors during analog aggregation. While removing users with unfavorable channel conditions can mitigate these errors, it also…

Signal Processing · Electrical Eng. & Systems 2025-03-04 Yang Zhao , Minrui Xu , Ping Wang , Dusit Niyato

Federated Learning (FL) has been becoming a popular interdisciplinary research area in both applied mathematics and information sciences. Mathematically, FL aims to collaboratively optimize aggregate objective functions over distributed…

Machine Learning · Computer Science 2024-12-03 Shusen Yang , Fangyuan Zhao , Zihao Zhou , Liang Shi , Xuebin Ren , Zongben Xu

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

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

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

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 Federated Learning (AirFL) is an emerging paradigm that tightly integrates wireless signal processing and distributed machine learning to enable scalable AI at the network edge. By leveraging the superposition property of…

Information Theory · Computer Science 2025-12-04 Seyed Mohammad Azimi-Abarghouyi , Carlo Fischione , Kaibin Huang

This paper investigates an over-the-air federated learning (OTA-FL) system that employs fluid antennas (FAs) at an access point. The system enhances learning performance by leveraging the additional degrees of freedom provided by antenna…

Signal Processing · Electrical Eng. & Systems 2025-02-04 Mohsen Ahmadzadeh , Saeid Pakravan , Ghosheh Abed Hodtani , Ming Zeng , Jean-Yves Chouinard , Leslie A. Rusch

Federated learning (FL) over wireless communication channels, specifically, over-the-air (OTA) model aggregation framework is considered. In OTA wireless setups, the adverse channel effects can be alleviated by increasing the number of…

Machine Learning · Computer Science 2021-12-22 Ozan Aygün , Mohammad Kazemi , Deniz Gündüz , Tolga M. Duman

Federated Learning (FL) is a distributed learning paradigm where clients collaboratively train a model while keeping their own data private. With an increasing scale of clients and models, FL encounters two key challenges, client drift due…

Machine Learning · Computer Science 2025-01-20 Jianhui Sun , Xidong Wu , Heng Huang , Aidong Zhang

With the explosive growth of data and wireless devices, federated learning (FL) over wireless medium has emerged as a promising technology for large-scale distributed intelligent systems. Yet, the urgent demand for ubiquitous intelligence…

Signal Processing · Electrical Eng. & Systems 2022-05-09 Chenxi Zhong , Huiyuan Yang , Xiaojun Yuan

Vertical federated learning (FL) is a collaborative machine learning framework that enables devices to learn a global model from the feature-partition datasets without sharing local raw data. However, as the number of the local intermediate…

Information Theory · Computer Science 2023-05-11 Yuanming Shi , Shuhao Xia , Yong Zhou , Yijie Mao , Chunxiao Jiang , Meixia Tao

Federated learning (FL) is a popular machine learning technique that enables multiple users to collaboratively train a model while maintaining the user data privacy. A significant challenge in FL is the communication bottleneck in the…

Machine Learning · Computer Science 2024-09-26 Elissa Mhanna , Mohamad Assaad

In Federated Learning (FL), the distributed nature and heterogeneity of client data present both opportunities and challenges. While collaboration among clients can significantly enhance the learning process, not all collaborations are…

Machine Learning · Computer Science 2024-07-18 Nazarii Tupitsa , Samuel Horváth , Martin Takáč , Eduard Gorbunov

Federated Learning is widely employed to tackle distributed sensitive data. Existing methods primarily focus on addressing in-federation data heterogeneity. However, we observed that they suffer from significant performance degradation when…

Machine Learning · Computer Science 2024-07-09 Mengmeng Ma , Tang Li , Xi Peng

We examine federated learning (FL) with over-the-air (OTA) aggregation, where mobile users (MUs) aim to reach a consensus on a global model with the help of a parameter server (PS) that aggregates the local gradients. In OTA FL, MUs train…

Machine Learning · Computer Science 2022-07-20 Ozan Aygün , Mohammad Kazemi , Deniz Gündüz , Tolga M. Duman