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Over-the-air federated learning (OTA-FL) unifies communication and model aggregation by leveraging the inherent superposition property of the wireless medium. This strategy can enable scalable and bandwidth-efficient learning via…

Information Theory · Computer Science 2024-12-05 Jiayu Mao , Aylin Yener

Over-the-air computation (OAC) harnesses the natural superposition of wireless signals to compute aggregate functions during transmission, thereby collapsing communication and computation into a single step and significantly reducing…

Signal Processing · Electrical Eng. & Systems 2025-06-24 Saeed Razavikia , Carlo Fischione

In data driven deep learning, distributed sensing and joint computing bring heavy load for computing and communication. To face the challenge, over-the-air computation (OAC) has been proposed for multi-sensor data aggregation, which enables…

Signal Processing · Electrical Eng. & Systems 2024-09-04 Mingjun Du , Sihui Zheng , Xiao-Ping Zhang , Yuhan Dong

To cope with the unprecedented surge in demand for data computing for the applications, the promising concept of multi-access edge computing (MEC) has been proposed to enable the network edges to provide closer data processing for mobile…

Information Theory · Computer Science 2020-08-14 Qiqi Ren , Jian Chen , Omid Abbasi , Gunes Karabulut Kurt , Halim Yanikomeroglu , F. Richard Yu

This paper investigates the transmission power control in over-the-air federated edge learning (Air-FEEL) system. Different from conventional power control designs (e.g., to minimize the individual mean squared error (MSE) of the…

Information Theory · Computer Science 2021-11-10 Xiaowen Cao , Guangxu Zhu , Jie Xu , Zhiqin Wang , Shuguang Cui

This paper investigates an OFDM-based over-the-air federated learning (OTA-FL) system, where multiple mobile devices, e.g., unmanned aerial vehicles (UAVs), transmit local machine learning (ML) models to a central parameter server (PS) for…

Signal Processing · Electrical Eng. & Systems 2025-08-29 Xiaoyan Ma , Shahryar Zehtabi , Taejoon Kim , Christopher G. Brinton

In recent years, over-the-air aggregation has been widely considered in large-scale distributed learning, optimization, and sensing. In this paper, we propose the over-the-air federated policy gradient algorithm, where all agents…

Machine Learning · Computer Science 2024-02-27 Huiwen Yang , Lingying Huang , Subhrakanti Dey , Ling Shi

In cell-free massive multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems, user equipments (UEs) are served by many distributed access points (APs), where channels are correlated due to finite…

Information Theory · Computer Science 2020-11-04 Junyuan Gao , Yongpeng Wu , Yongjian Wang , Wenjun Zhang , Fan Wei

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

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

Federated learning (FL) is an emerging machine learning paradigm for training models across multiple edge devices holding local data sets, without explicitly exchanging the data. Recently, over-the-air (OTA) FL has been suggested to reduce…

Signal Processing · Electrical Eng. & Systems 2023-03-31 Tomer Gafni , Kobi Cohen , Yonina C. Eldar

In this study, we propose a general-purpose synchronization method that allows a set of software-defined radios (SDRs) to transmit or receive any in-phase/quadrature data with precise timings while maintaining the baseband processing in the…

Signal Processing · Electrical Eng. & Systems 2022-09-22 Alphan Sahin

Recent advances in distributed learning systems have introduced effective solutions for implementing collaborative artificial intelligence techniques in wireless communication networks. Federated learning approaches provide a…

Distributed, Parallel, and Cluster Computing · Computer Science 2025-10-22 Zhuoyu Yao , Yue Wang , Songyang Zhang , Yingshu Li , Zhipeng Cai , Zhi Tian

In this paper, we investigate a joint device activity detection (DAD), channel estimation (CE), and data decoding (DD) algorithm for multiple-input multiple-output (MIMO) massive unsourced random access (URA). Different from the…

Information Theory · Computer Science 2021-12-20 Tianya Li , Yongpeng Wu , Mengfan Zheng , Wenjun Zhang , Chengwen Xing , Jianping An , Xiang-Gen Xia , Chengshan Xiao

Generative Artificial Intelligence (GAI) shows remarkable productivity and creativity in Mobile Edge Networks, such as the metaverse and the Industrial Internet of Things. Federated learning is a promising technique for effectively training…

Machine Learning · Computer Science 2024-03-08 Bingkun Lai , Jiayi He , Jiawen Kang , Gaolei Li , Minrui Xu , Tao zhang , Shengli Xie

This paper investigates asynchronous multiple-input multiple-output (MIMO) massive unsourced random access (URA) in an orthogonal frequency division multiplexing (OFDM) system over frequency-selective fading channels, with the presence of…

Information Theory · Computer Science 2024-10-24 Tianya Li , Yongpeng Wu , Junyuan Gao , Wenjun Zhang , Xiang-Gen Xia , Derrick Wing Kwan Ng , Chengshan Xiao

In this paper, we explore a cooperative integrated sensing and communication (ISAC) framework that utilizes orthogonal frequency division multiplexing (OFDM) waveforms. Under the control of a central processing unit (CPU), multiple access…

Signal Processing · Electrical Eng. & Systems 2026-02-25 Zihuan Wang , Vincent W. S. Wong , Robert Schober

Unmanned aerial vehicle (UAV)-assisted mobile edge computing (MEC) system is a prominent concept, where a UAV equipped with a MEC server is deployed to serve a number of terminal devices (TDs) of Internet of Things (IoT) in a finite period.…

Signal Processing · Electrical Eng. & Systems 2020-08-13 Tiankui Zhang , Yu Xu , Jonathan Loo , Dingcheng Yang , Lin Xiao

Future networks are expected to connect an enormous number of nodes wirelessly using wide-band transmission. This brings great challenges. To avoid collecting a large amount of data from the massive number of nodes, computation over…

Information Theory · Computer Science 2019-06-04 Fangzhou Wu , Li Chen , Nan Zhao , Yunfei Chen , F. Richard Yu , Guo Wei

This paper focuses on the latest research and innovations in fundamental next-generation multiple access (NGMA) techniques and the coexistence with other key technologies for the sixth generation (6G) of wireless networks. In more detail,…

Networking and Internet Architecture · Computer Science 2024-03-14 Nikos G. Evgenidis , Nikos A. Mitsiou , Vasiliki I. Koutsioumpa , Sotiris A. Tegos , Panagiotis D. Diamantoulakis , George K. Karagiannidis
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