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Federated Learning (FL) has emerged as a privacy-preserving paradigm for training machine learning models across distributed edge devices in the Internet of Things (IoT). By keeping data local and coordinating model training through a…

Machine Learning · Computer Science 2025-12-30 Ziru Niu , Hai Dong , A. K. Qin , Tao Gu , Pengcheng Zhang

We propose an uplink over-the-air aggregation (OAA) method for wireless federated learning (FL) that simultaneously trains multiple models. To maximize the multi-model training convergence rate, we derive an upper bound on the optimality…

Information Theory · Computer Science 2024-09-04 Chong Zhang , Min Dong , Ben Liang , Ali Afana , Yahia Ahmed

The rapid proliferation and growth of artificial intelligence (AI) has led to the development of federated learning (FL). FL allows wireless devices (WDs) to cooperatively learn by sharing only local model parameters, without needing to…

Signal Processing · Electrical Eng. & Systems 2025-07-22 Zihao Hu , Jia Yan , Ying-Jun Angela Zhang , Jun Zhang , Khaled B. Letaief

Over-the-air (OTA) computation has recently emerged as a communication-efficient Federated Learning (FL) paradigm to train machine learning models over wireless networks. However, its performance is limited by the device with the worst SNR,…

Machine Learning · Computer Science 2024-02-05 Muhammad Faraz Ul Abrar , Nicolò Michelusi

Federated learning (FL) is an emerging machine learning paradigm with immense potential to support advanced services and applications in future industries. However, when deployed over wireless communication systems, FL suffers from…

Signal Processing · Electrical Eng. & Systems 2025-03-06 Sangjun Park , Hyowoon Seo

Federated learning (FL) is a distributed machine learning technology for next-generation AI systems that allows a number of workers, i.e., edge devices, collaboratively learn a shared global model while keeping their data locally to prevent…

Networking and Internet Architecture · Computer Science 2022-06-01 Pinyarash Pinyoanuntapong , Prabhu Janakaraj , Ravikumar Balakrishnan , Minwoo Lee , Chen Chen , Pu Wang

Federated Learning (FL) enables collaborative model training across large-scale distributed service nodes while preserving data privacy, making it a cornerstone of intelligent service systems in edge-cloud environments. However, in…

Machine Learning · Computer Science 2026-02-03 Zhiwei Ling , Hailiang Zhao , Chao Zhang , Xiang Ao , Ziqi Wang , Cheng Zhang , Zhen Qin , Xinkui Zhao , Kingsum Chow , Yuanqing Wu , MengChu Zhou

Federated learning (FL) is a paradigm where many clients collaboratively train a model under the coordination of a central server, while keeping the training data locally stored. However, heterogeneous data distributions over different…

Machine Learning · Computer Science 2022-05-27 Yaqi Sun , Shijing Si , Jianzong Wang , Yuhan Dong , Zhitao Zhu , Jing Xiao

In this work, we investigate federated edge learning over a fading multiple access channel. To alleviate the communication burden between the edge devices and the access point, we introduce a pioneering digital over-the-air computation…

Signal Processing · Electrical Eng. & Systems 2024-04-22 Saeed Razavikia , José Mairton Barros Da Silva Júnior , Carlo Fischione

Federated learning (FL) is a machine learning paradigm where a shared central model is learned across distributed edge devices while the training data remains on these devices. Federated Averaging (FedAvg) is the leading optimization method…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-10-22 Yujing Chen , Yue Ning , Martin Slawski , Huzefa Rangwala

Over-the-air federated learning (OTA-FL) reduces uplink latency by aggregating client updates directly over the wireless multiple-access channel. Coherent analog aggregation realizes this idea by aligning the phases and amplitudes of…

Signal Processing · Electrical Eng. & Systems 2026-05-19 Hao Chen , Zavareh Bozorgasl

Federated learning (FL) is a collaborative approach where multiple clients, coordinated by a parameter server (PS), train a unified machine-learning model. The approach, however, suffers from two key challenges: data heterogeneity and…

Machine Learning · Computer Science 2024-10-30 Matin Mortaheb , Priyanka Kaswan , Sennur Ulukus

Federated learning (FL) has emerged as a promising distributed training paradigm for Low Earth Orbit (LEO) networks by significantly reducing communication overhead. However, its deployment faces critical challenges, e.g., topology-induced…

Signal Processing · Electrical Eng. & Systems 2026-05-07 Jinhao Yi , Weijun Gao , Chong Han , Ozgur Gurbuz , Josep M. Jornet

Federated learning (FL) has emerged as a promising paradigm for enabling the collaborative training of models without centralized access to the raw data on local devices. In the typical FL paradigm (e.g., FedAvg), model weights are sent to…

Machine Learning · Computer Science 2024-12-25 Guangyu Sun , Umar Khalid , Matias Mendieta , Pu Wang , Chen Chen

Over-the-air federated learning (AirFL) allows devices to train a learning model in parallel and synchronize their local models using over-the-air computation. The integrity of AirFL is vulnerable due to the obscurity of the local models…

Machine Learning · Computer Science 2022-07-19 Jingheng Zheng , Hui Tian , Wanli Ni , Wei Ni , Ping Zhang

Federated learning (FL) is a decentralized machine learning paradigm in which multiple clients collaboratively train a global model by exchanging only model updates with the central server without sharing the local data of the clients. Due…

Computer Vision and Pattern Recognition · Computer Science 2025-05-19 Jonas Klotz , Barış Büyüktaş , Begüm Demir

To exploit massive amounts of data generated at mobile edge networks, federated learning (FL) has been proposed as an attractive substitute for centralized machine learning (ML). By collaboratively training a shared learning model at edge…

Information Theory · Computer Science 2024-10-30 Hang Liu , Xiaojun Yuan , Ying-Jun Angela Zhang

Federated learning enables distributed model training across clients without raw data exchange, but in wireless implementations, frequent parameter updates cause high communication overhead. Existing research often assumes known channel…

Machine Learning · Computer Science 2025-03-25 Zhiyin Li , Yubo Yang , Tao Yang , Ziyu Guo , Xiaofeng Wu , Bo Hu

Federated Learning (FL) since proposed has been applied in many fields, such as credit assessment, medical, etc. Because of the difference in the network or computing resource, the clients may not update their gradients at the same time…

Machine Learning · Computer Science 2021-11-19 Zhicheng Zhou , Hailong Chen , Kunhua Li , Fei Hu , Bingjie Yan , Jieren Cheng , Xuyan Wei , Bernie Liu , Xiulai Li , Fuwen Chen , Yongji Sui

In traditional federated learning, a single global model cannot perform equally well for all clients. Therefore, the need to achieve the client-level fairness in federated system has been emphasized, which can be realized by modifying the…

Machine Learning · Computer Science 2025-10-09 Seok-Ju Hahn , Gi-Soo Kim , Junghye Lee