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This work studies the task of device coordination in wireless networks for over-the-air federated learning (OTA-FL). For conventional metrics of aggregation error, the task is shown to describe the zero-forcing (ZF) and minimum mean squared…

Information Theory · Computer Science 2022-11-09 Mohammad Ali Sedaghat , Ali Bereyhi , Saba Asaad , Ralf R. Mueller

In the Internet-of-Things (IoT) era, efficient functionality integration is essential to address the growing demands of communication, computation, and sensing. Signal-level integrated sensing, computing, and communication (Sig-ISCC) is…

Information Theory · Computer Science 2026-04-30 Paul Zheng , Yao Zhu , Xiaopeng Yuan , Yulin Hu , Anke Schmeink

Edge federated learning (FL) is an emerging paradigm that trains a global parametric model from distributed datasets based on wireless communications. This paper proposes a unit-modulus over-the-air computation (UMAirComp) framework to…

Information Theory · Computer Science 2022-04-12 Shuai Wang , Yuncong Hong , Rui Wang , Qi Hao , Yik-Chung Wu , Derrick Wing Kwan Ng

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

Pilot sequence design over doubly selective channels (DSC) is challenging due to the variations in both the time- and frequency-domains. Against this background, the contribution of this paper is twofold: Firstly, we investigate the optimal…

Information Theory · Computer Science 2024-09-27 Zhi Gu , Zhengchun Zhou , Pingzhi Fan , Avik Ranjan Adhikary , Zilong Liu

Federated learning (FL) as a promising edge-learning framework can effectively address the latency and privacy issues by featuring distributed learning at the devices and model aggregation in the central server. In order to enable efficient…

Information Theory · Computer Science 2022-07-12 Chunmei Xu , Shengheng Liu , Zhaohui Yang , Yongming Huang , Kai-Kit Wong

Federated learning (FL) is a promising learning paradigm that can tackle the increasingly prominent isolated data islands problem while keeping users' data locally with privacy and security guarantees. However, FL could result in…

Information Theory · Computer Science 2022-03-30 Peng Yang , Yuning Jiang , Ting Wang , Yong Zhou , Yuanming Shi , Colin N. Jones

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

Federated edge learning (FEEL) enables distributed model training across wireless devices without centralising raw data, but deployment is constrained by the wireless uplink. A promising direction is over-the-air (OTA) aggregation, which…

Machine Learning · Computer Science 2025-09-23 Antonio Tarizzo , Mohammad Kazemi , Deniz Gündüz

The communication bottleneck of over-the-air federated learning (OA-FL) lies in uploading the gradients of local learning models. In this paper, we study the reduction of the communication overhead in the gradients uploading by using the…

Signal Processing · Electrical Eng. & Systems 2023-04-11 Chenxi Zhong , Xiaojun Yuan

In this letter, we introduce over-the-air computation into the communication design of federated multi-task learning (FMTL), and propose an over-the-air federated multi-task learning (OA-FMTL) framework, where multiple learning tasks…

Machine Learning · Computer Science 2021-10-26 Haoming Ma , Xiaojun Yuan , Dian Fan , Zhi Ding , Xin Wang , Jun Fang

To achieve communication-efficient federated multitask learning (FMTL), we propose an over-the-air FMTL (OAFMTL) framework, where multiple learning tasks deployed on edge devices share a non-orthogonal fading channel under the coordination…

Information Theory · Computer Science 2022-05-10 Haoming Ma , Xiaojun Yuan , Zhi Ding , Dian Fan , Jun Fang

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

Incorporating over-the-air computations (OAC) into the model training process of federated learning (FL) is an effective approach to alleviating the communication bottleneck in FL systems. Under OAC-FL, every client modulates its…

Machine Learning · Computer Science 2025-12-23 Jiaqi Zhu , Zhongyuan Zhao , Xiao Li , Ruihao Du , Shi Jin , Howard H. Yang

Federated learning (FL) has emerged as an appealing machine learning approach to deal with massive raw data generated at multiple mobile devices, {which needs to aggregate the training model parameter of every mobile device at one base…

Machine Learning · Computer Science 2023-08-21 Xuming An , Rongfei Fan , Shiyuan Zuo , Han Hu , Hai Jiang , Ning Zhang

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

In federated learning (FL), heterogeneity among the local dataset distributions of clients can result in unsatisfactory performance for some, leading to an unfair model. To address this challenge, we propose an over-the-air fair federated…

Machine Learning · Computer Science 2025-01-08 Shayan Mohajer Hamidi , Ali Bereyhi , Saba Asaad , H. Vincent Poor

Federated edge learning (FEEL) has emerged as a core paradigm for large-scale optimization. However, FEEL still suffers from a communication bottleneck due to the transmission of high-dimensional model updates from the clients to the…

Information Theory · Computer Science 2024-07-17 Maximilian Egger , Christoph Hofmeister , Cem Kaya , Rawad Bitar , Antonia Wachter-Zeh

This paper introduces a new federated learning scheme that leverages over-the-air computation. A novel feature of this scheme is the proposal to employ adaptive weights during aggregation, a facet treated as predefined in other over-the-air…

Information Theory · Computer Science 2024-09-13 Seyed Mohammad Azimi-Abarghouyi , Leandros Tassiulas

Edge signal processing facilitates distributed learning and inference in the client-server model proposed in federated learning. In traditional machine learning, clients (IoT devices) that acquire raw signal samples can aid a data center…

Signal Processing · Electrical Eng. & Systems 2024-10-03 Vijay Anavangot