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In this study, we propose an over-the-air computation (AirComp) scheme for federated edge learning (FEEL). The proposed scheme relies on the concept of distributed learning by majority vote (MV) with sign stochastic gradient descend…

Signal Processing · Electrical Eng. & Systems 2021-11-04 Alphan Sahin , Bryson Everette , Safi Shams Muhtasimul Hoque

To further preserve model weight privacy and improve model performance in Federated Learning (FL), FL via Over-the-Air Computation (AirComp) scheme based on dynamic power control is proposed. The edge devices (EDs) transmit the signs of…

Machine Learning · Computer Science 2023-08-08 Anbang Zhang , Shuaishuai Guo , Shuai Liu

In this study, we propose an over-the-air computation (AirComp) scheme for federated edge learning (FEEL) without channel state information (CSI) at the edge devices (EDs) or the edge server (ES). The proposed scheme relies on non-coherent…

Signal Processing · Electrical Eng. & Systems 2021-12-28 Alphan Sahin , Bryson Everette , Safi Shams Muhtasimul Hoque

This study introduces a novel non-coherent over-the-air computation (OAC) scheme aimed at achieving reliable majority vote (MV) calculations in fading channels. The proposed approach relies on modulating the amplitude of the elements of…

Information Theory · Computer Science 2023-08-15 Alphan Sahin , Xiaofeng Wang

Distributed optimization concerns the optimization of a common function in a distributed network, which finds a wide range of applications ranging from machine learning to vehicle platooning. Its key operation is to aggregate all local…

Information Theory · Computer Science 2022-04-15 Zhenyi Lin , Yi Gong , Kaibin Huang

In this paper, we study a federated learning system at the wireless edge that uses over-the-air computation (AirComp). In such a system, users transmit their messages over a multi-access channel concurrently to achieve fast model…

Information Theory · Computer Science 2020-08-04 Ruichen Jiang , Sheng Zhou

We consider the problem of non-coherent over-the-air computation (AirComp), where $n$ devices carry high-dimensional data vectors $\mathbf{x}_i\in\mathbb{R}^d$ of sparsity $\lVert\mathbf{x}_i\rVert_0\leq k$ whose sum has to be computed at a…

Signal Processing · Electrical Eng. & Systems 2025-10-22 Henrik Hellström , Jiwon Jeong , Ayfer Özgür , Viktoria Fodor , Carlo Fischione

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

Federated learning (FL), as an emerging distributed machine learning paradigm, allows a mass of edge devices to collaboratively train a global model while preserving privacy. In this tutorial, we focus on FL via over-the-air computation…

Machine Learning · Computer Science 2023-10-17 Jingyang Zhu , Yuanming Shi , Yong Zhou , Chunxiao Jiang , Wei Chen , Khaled B. Letaief

In this study, we propose an over-the-air computation (OAC) scheme to calculate the majority vote (MV) for federated edge learning (FEEL). With the proposed approach, edge devices (EDs) transmit the signs of local stochastic gradients,…

Information Theory · Computer Science 2022-10-14 Alphan Sahin

This paper presents the first orthogonal frequency-division multiplexing(OFDM)-based digital over-the-air computation (AirComp) system for wireless federated edge learning, where multiple edge devices transmit model data simultaneously…

Information Theory · Computer Science 2023-07-06 Lizhao You , Xinbo Zhao , Rui Cao , Yulin Shao , Liqun Fu

Over-the-air computation (AirComp), as a data aggregation method that can improve network efficiency by exploiting the superposition characteristics of wireless channels, has received much attention recently. Meanwhile, the orthogonal time…

Information Theory · Computer Science 2024-03-27 Dongkai Zhou , Jing Guo , Siqiang Wang , Zhong Zheng , Zesong Fei , Weijie Yuan , Xinyi Wang

This paper presents the first broadband digital over-the-air computation (AirComp) system for phase asynchronous OFDM-based federated edge learning systems. Existing analog AirComp systems often assume perfect phase alignment via channel…

Information Theory · Computer Science 2021-11-23 Xinbo Zhao , Lizhao You , Rui Cao , Yulin Shao , Liqun Fu

Federated learning (FL) enables mobile devices to collaboratively learn a shared prediction model while keeping data locally. However, there are two major research challenges to practically deploy FL over mobile devices: (i) frequent…

Machine Learning · Computer Science 2022-08-16 Liang Li , Chenpei Huang , Dian Shi , Hao Wang , Xiangwei Zhou , Minglei Shu , Miao Pan

Decentralized federated learning (DFL), inherited from distributed optimization, is an emerging paradigm to leverage the explosively growing data from wireless devices in a fully distributed manner.DFL enables joint training of machine…

Signal Processing · Electrical Eng. & Systems 2023-10-10 Zhiyuan Zhai , Xiaojun Yuan , Xin Wang

Departing from the classic paradigm of data-centric designs, the 6G networks for supporting edge AI features task-oriented techniques that focus on effective and efficient execution of AI task. Targeting end-to-end system performance, such…

Information Theory · Computer Science 2022-11-03 Dingzhu Wen , Xiang Jiao , Peixi Liu , Guangxu Zhu , Yuanming Shi , Kaibin Huang

IoT systems typically involve separate data collection and processing, and the former faces the scalability issue when the number of nodes increases. For some tasks, only the result of data fusion is needed. Then, the whole process can be…

Networking and Internet Architecture · Computer Science 2021-05-11 Suhua Tang , Petar Popovski , Chao Zhang , Sadao Obana

In this paper, we develop an orthogonal-frequency-division-multiplexing (OFDM)-based over-the-air (OTA) aggregation solution for wireless federated learning (FL). In particular, the local gradients in massive IoT devices are modulated by an…

Signal Processing · Electrical Eng. & Systems 2021-10-28 Huayan Guo , Yifan Zhu , Haoyu Ma , Vincent K. N. Lau , Kaibin Huang , Xiaofan Li , Huabin Nong , Mingyu Zhou

Federated learning (FL) is a promising technique that enables many edge devices to train a machine learning model collaboratively in wireless networks. By exploiting the superposition nature of wireless waveforms, over-the-air computation…

Signal Processing · Electrical Eng. & Systems 2020-11-26 Naifu Zhang , Meixia Tao

This work is concerned with integrated sensing, communication, and computation (ISCC) in uplink orthogonal frequency division multiplexing (OFDM) systems, wherein multiple devices perform target sensing and over-the-air computation…

Signal Processing · Electrical Eng. & Systems 2025-07-08 Biao Dong , Bin Cao , Qinyu Zhang
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