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We study joint downlink-uplink beamforming design for wireless federated learning (FL) with a multi-antenna base station. Considering analog transmission over noisy channels and uplink over-the-air aggregation, we derive the global model…

Information Theory · Computer Science 2023-07-04 Chong Zhang , Min Dong , Ben Liang , Ali Afana , Yahia Ahmed

Federated learning (FL) is a distributed machine learning paradigm where multiple clients conduct local training based on their private data, then the updated models are sent to a central server for global aggregation. The practical…

Machine Learning · Computer Science 2025-04-03 Harsh Vardhan , Xiaofan Yu , Tajana Rosing , Arya Mazumdar

Mega-constellations of small-size Low Earth Orbit (LEO) satellites are currently planned and deployed by various private and public entities. While global connectivity is the main rationale, these constellations also offer the potential to…

Signal Processing · Electrical Eng. & Systems 2021-11-29 Nasrin Razmi , Bho Matthiesen , Armin Dekorsy , Petar Popovski

Federated Learning (FL) algorithms commonly sample a random subset of clients to address the straggler issue and improve communication efficiency. While recent works have proposed various client sampling methods, they have limitations in…

Machine Learning · Computer Science 2024-05-15 Jiaxiang Geng , Yanzhao Hou , Xiaofeng Tao , Juncheng Wang , Bing Luo

Federated learning (FL) is a distributed learning paradigm wherein users exchange FL models with a server instead of raw datasets, thereby preserving data privacy and reducing communication overhead. However, the increased number of FL…

Machine Learning · Computer Science 2024-04-30 Afsaneh Mahmoudi , Mahmoud Zaher , Emil Björnson

Recently, federated learning (FL) has sparked widespread attention as a promising decentralized machine learning approach which provides privacy and low delay. However, communication bottleneck still constitutes an issue, that needs to be…

Signal Processing · Electrical Eng. & Systems 2022-03-14 Pavlos S. Bouzinis , Panagiotis D. Diamantoulakis , George K. Karagiannidis

Federated learning (FL) emerges as a popular distributed learning schema that learns a model from a set of participating users without sharing raw data. One major challenge of FL comes with heterogeneous users, who may have distributionally…

Machine Learning · Computer Science 2022-07-08 Junyuan Hong , Haotao Wang , Zhangyang Wang , Jiayu Zhou

Federated learning (FL) was proposed to achieve collaborative machine learning among various clients without uploading private data. However, due to model aggregation strategies, existing frameworks require strict model homogeneity,…

Machine Learning · Computer Science 2020-09-29 Shaoming Song , Yunfeng Shao , Jian Li

Federated learning (FL) has emerged as a promising learning paradigm in which only local model parameters (gradients) are shared. Private user data never leaves the local devices thus preserving data privacy. However, recent research has…

Cryptography and Security · Computer Science 2022-12-23 Xiaochan Xue , Moh Khalid Hasan , Shucheng Yu , Laxima Niure Kandel , Min Song

To handle the data explosion in the era of internet of things (IoT), it is of interest to investigate the decentralized network, with the aim at relaxing the burden to central server along with keeping data privacy. In this work, we develop…

Signal Processing · Electrical Eng. & Systems 2020-07-28 Yue Xiao , Yu Ye , Shaocheng Huang , Li Hao , Zheng Ma , Ming Xiao , Shahid Mumtaz

Federated Learning (FL) is a privacy-protected machine learning paradigm that allows model to be trained directly at the edge without uploading data. One of the biggest challenges faced by FL in practical applications is the heterogeneity…

Machine Learning · Computer Science 2021-08-20 Zirui Zhu , Ziyi Ye

Federated learning (FL), as an emerging edge artificial intelligence paradigm, enables many edge devices to collaboratively train a global model without sharing their private data. To enhance the training efficiency of FL, various…

Machine Learning · Computer Science 2022-11-23 Wenzhi Fang , Ziyi Yu , Yuning Jiang , Yuanming Shi , Colin N. Jones , Yong Zhou

Federated learning (FL) is an emerging machine learning technique that aggregates model attributes from a large number of distributed devices. Several unique features such as energy saving and privacy preserving make FL a highly promising…

Networking and Internet Architecture · Computer Science 2020-03-04 Haijian Sun , Xiang Ma , Rose Qingyang Hu

We advocate a new resource allocation framework, which we term resource rationing, for wireless federated learning (FL). Unlike existing resource allocation methods for FL, resource rationing focuses on balancing resources across learning…

Signal Processing · Electrical Eng. & Systems 2021-04-15 Cong Shen , Jie Xu , Sihui Zheng , Xiang Chen

To address the limitations of traditional over-the-air federated learning (OA-FL) such as limited server coverage and low resource utilization, we propose an OA-FL in MIMO cloud radio access network (MIMO Cloud-RAN) framework, where edge…

Information Theory · Computer Science 2023-05-18 Haoming Ma , Xiaojun Yuan , Zhi Ding

Federated Learning (FL) is increasingly adopted in edge computing scenarios, where a large number of heterogeneous clients operate under constrained or sufficient resources. The iterative training process in conventional FL introduces…

Machine Learning · Computer Science 2025-02-13 Dezhong Yao , Yuexin Shi , Tongtong Liu , Zhiqiang Xu

Federated learning (FL) over wireless networks using analog transmission can efficiently utilize the communication resource but is susceptible to errors caused by noisy wireless links. In this paper, assuming a multi-antenna base station,…

Information Theory · Computer Science 2025-02-05 Chong Zhang , Min Dong , Ben Liang , Ali Afana , Yahia Ahmed

With an increasing number of smart devices like internet of things (IoT) devices deployed in the field, offloadingtraining of neural networks (NNs) to a central server becomes more and more infeasible. Recent efforts toimprove users'…

Machine Learning · Computer Science 2023-07-19 Kilian Pfeiffer , Martin Rapp , Ramin Khalili , Jörg Henkel

This paper is to design and optimize a non-orthogonal and noncoherent massive multiple-input multiple-output (MIMO) framework towards enabling scalable ultra-reliable low-latency communications (sURLLC) in wireless systems beyond 5G. In…

Signal Processing · Electrical Eng. & Systems 2020-02-19 He Chen , Zheng Dong , Jian-Kang Zhang , Branka Vucetic

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