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Federated Learning is a modern decentralized machine learning technique where user equipments perform machine learning tasks locally and then upload the model parameters to a central server. In this paper, we consider a 3-layer hierarchical…

Machine Learning · Computer Science 2022-10-11 Chang Liu , Terence Jie Chua , Jun Zhao

Today's 5G and NextG wireless networks are moving toward using the coordinated multi-point (CoMP) transmission and reception technique, where a client can be simultaneously served by multiple base stations (BSs) for better communication…

Networking and Internet Architecture · Computer Science 2026-04-14 Haiyun Liu , Jiahao Xue , Jie Xu , Yao Liu , Zhuo Lu

This paper studies the design of wireless federated learning (FL) for simultaneously training multiple machine learning models. We consider round robin device-model assignment and downlink beamforming for concurrent multiple model updates.…

Information Theory · Computer Science 2024-01-17 Chong Zhang , Min Dong , Ben Liang , Ali Afana , Yahia Ahmed

Federated learning offers a compelling solution to the challenges of networking and data privacy within aerial and space networks by utilizing vast private edge data and computing capabilities accessible through drones, balloons, and…

Machine Learning · Computer Science 2024-09-19 Fan Dong , Henry Leung , Steve Drew

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

Federated learning (FL) is a popular privacy-preserving distributed training scheme, where multiple devices collaborate to train machine learning models by uploading local model updates. To improve communication efficiency, over-the-air…

Machine Learning · Computer Science 2023-11-27 Yuchang Sun , Zehong lin , Yuyi Mao , Shi Jin , Jun Zhang

Almost all existing hierarchical federated learning (FL) models are limited to two aggregation layers, restricting scalability and flexibility in complex, large-scale networks. In this work, we propose a Multi-Layer Hierarchical Federated…

Machine Learning · Computer Science 2026-02-17 Seyed Mohammad Azimi-Abarghouyi , Carlo Fischione

To exploit unprecedented data generation in mobile edge networks, federated learning (FL) has emerged as a promising alternative to the conventional centralized machine learning (ML). However, there are some critical challenges for FL…

Signal Processing · Electrical Eng. & Systems 2024-03-12 Zhiyuan Zhai , Xiaojun Yuan , Xin Wang , Huiyuan Yang

The proliferation of Internet-of-Things (IoT) devices and cloud-computing applications over siloed data centers is motivating renewed interest in the collaborative training of a shared model by multiple individual clients via federated…

Information Theory · Computer Science 2021-10-14 Hong Xing , Osvaldo Simeone , Suzhi Bi

Over-the-air computation (AirComp) integrates analog communication with task-oriented computation, serving as a key enabling technique for communication-efficient federated learning (FL) over wireless networks. However, owing to its analog…

Information Theory · Computer Science 2025-01-28 Wei Shi , Jiacheng Yao , Wei Xu , Jindan Xu , Xiaohu You , Yonina C. Eldar , Chunming Zhao

Federated Learning (FL) is a well-known framework for successfully performing a learning task in an edge computing scenario where the devices involved have limited resources and incomplete data representation. The basic assumption of FL is…

Machine Learning · Computer Science 2023-12-08 Lorenzo Valerio , Chiara Boldrini , Andrea Passarella , János Kertész , Márton Karsai , Gerardo Iñiguez

Federated learning is a privacy-preserving and distributed training method using heterogeneous data sets stored at local devices. Federated learning over wireless networks requires aggregating locally computed gradients at a server where…

Signal Processing · Electrical Eng. & Systems 2021-01-01 Seunghoon Lee , Chanho Park , Song-Nam Hong , Yonina C. Eldar , Namyoon Lee

Federated learning (FL) is a privacy-preserving distributed machine learning paradigm that operates at the wireless edge. It enables clients to collaborate on model training while keeping their data private from adversaries and the central…

Machine Learning · Computer Science 2023-06-06 Wayne Lemieux , Raphael Pinard , Mitra Hassani

Federated learning increasingly operates in a large-model regime where communication, memory, and computation are all scarce. Typically, non-IID client data induce drift that degrades the stability and performance of local training.…

Machine Learning · Computer Science 2026-04-29 Shuchen Zhu , Zhengyang Huang , Yuqi Xu , Peijin Li

The space-air-ground integrated network (SAGIN) has become a crucial research direction in future wireless communications due to its ubiquitous coverage, rapid and flexible deployment, and multi-layer cooperation capabilities. However,…

Information Theory · Computer Science 2024-08-06 Chong Huang , Gaojie Chen , Pei Xiao , Jonathon A. Chambers , Wei Huang

Clustered Federated Multitask Learning (CFL) has gained considerable attention as an effective strategy for overcoming statistical challenges, particularly when dealing with non independent and identically distributed (non IID) data across…

Networking and Internet Architecture · Computer Science 2024-01-22 Moqbel Hamood , Abdullatif Albaseer , Mohamed Abdallah , Ala Al-Fuqaha

As a promising paradigm federated Learning (FL) is widely used in privacy-preserving machine learning, which allows distributed devices to collaboratively train a model while avoiding data transmission among clients. Despite its immense…

Machine Learning · Computer Science 2023-08-29 Jinglong Shen , Xiucheng Wang , Nan Cheng , Longfei Ma , Conghao Zhou , Yuan Zhang

The proliferation of Internet of Things (IoT) has increased interest in federated learning (FL) for privacy-preserving distributed data utilization. However, traditional two-tier FL architectures inadequately adapt to multi-tier IoT…

Machine Learning · Computer Science 2024-12-30 Jiechao Gao , Yuangang Li , Yue Zhao , Brad Campbell

Future wireless networks are expected to support diverse mobile services, including artificial intelligence (AI) services and ubiquitous data transmissions. Federated learning (FL), as a revolutionary learning approach, enables…

Information Theory · Computer Science 2023-04-06 Zehong Lin , Hang Liu , Ying-Jun Angela Zhang

We study collaborative machine learning (ML) across wireless devices, each with its own local dataset. Offloading these datasets to a cloud or an edge server to implement powerful ML solutions is often not feasible due to latency, bandwidth…

Machine Learning · Computer Science 2019-09-06 Mehdi Salehi Heydar Abad , Emre Ozfatura , Deniz Gunduz , Ozgur Ercetin