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One of the main challenges facing Internet of Things (IoT) networks is managing interference caused by the large number of devices communicating simultaneously, particularly in multi-cluster networks where multiple devices simultaneously…

Signal Processing · Electrical Eng. & Systems 2025-10-07 Lucas Sempéré , Yue Bi , Yue Wu , Pengwenlong Gu , Selma Boumerdassi

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 investigates covert data transmission within a multiple-input multiple-output (MIMO) over-the-air computation (AirComp) network, where sensors transmit data to the access point (AP) while guaranteeing covertness to the warden…

Signal Processing · Electrical Eng. & Systems 2024-03-18 Junteng Yao , Tuo Wu , Ming Jin , Cunhua Pan , Quanzhong Li , Jinhong Yuan

In this paper, we consider decentralized federated learning (FL) over wireless networks, where over-the-air computation (AirComp) is adopted to facilitate the local model consensus in a device-to-device (D2D) communication manner. However,…

Information Theory · Computer Science 2021-06-16 Yandong Shi , Yong Zhou , Yuanming Shi

Sensing is envisioned as a key network function of the 6G mobile networks. Artificial intelligence (AI)-empowered sensing fuses features of multiple sensing views from devices distributed in edge networks for the edge server to perform…

Information Theory · Computer Science 2023-02-21 Zhiyan Liu , Qiao Lan , Anders E. Kalør , Petar Popovski , Kaibin Huang

Wireless data aggregation (WDA), referring to aggregating data distributed at devices (e.g., sensors and smartphone), is a common operation in 5G-and-beyond machine-type communications to support Internet-of-Things (IoT), which lays the…

Networking and Internet Architecture · Computer Science 2020-11-17 Guangxu Zhu , Jie Xu , Kaibin Huang , Shuguang Cui

Over-the-air computation (AirComp) is a disruptive technique for fast wireless data aggregation in Internet of Things (IoT) networks via exploiting the waveform superposition property of multiple-access channels. However, the performance of…

Signal Processing · Electrical Eng. & Systems 2021-05-12 Wenzhi Fang , Yuning Jiang , Yuanming Shi , Yong Zhou , Wei Chen , Khaled B. Letaief

This paper investigates a fluid antenna (FA) array-enhanced over-the-air computation (AirComp) system in the presence of hardware impairments (HWIs), exploiting the new degrees of freedom offered by reconfigurable antenna positioning. To…

Signal Processing · Electrical Eng. & Systems 2025-12-08 Zilong Li , Jianxin Dai , Zhaohui Yang , Zhaoyang Zhang , Kai-Kit Wong , Zhiyang Li , Shunkuan Cheng

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

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

Over-the-air computation (AirComp) has recently been recognized as a promising scheme for a fusion center to achieve fast distributed data aggregation in wireless networks via exploiting the superposition property of multiple-access…

Signal Processing · Electrical Eng. & Systems 2021-06-23 Lukuan Xing , Yong Zhou , Yuanming Shi

Motivated by increasing computational capabilities of wireless devices, as well as unprecedented levels of user- and device-generated data, new distributed machine learning (ML) methods have emerged. In the wireless community, Federated…

Signal Processing · Electrical Eng. & Systems 2021-11-22 Henrik Hellström , Viktoria Fodor , Carlo Fischione

Over-the-air computation (AirComp) enables fast data aggregation for edge intelligence applications. However the performance of AirComp can be severely degraded by channel misalignments. Pinching antenna systems (PASS) have recently emerged…

Information Theory · Computer Science 2025-05-13 Zhonghao Lyu , Haoyun Li , Yulan Gao , Ming Xiao , H. Vincent Poor

Wireless federated learning (FL) relies on efficient uplink communications to aggregate model updates across distributed edge devices. Over-the-air computation (a.k.a. AirComp) has emerged as a promising approach for addressing the…

Information Theory · Computer Science 2024-04-16 Yujia Mu , Xizixiang Wei , Cong Shen

This paper investigates the effect of imperfect channel state information (CSI) on the over-the-air computation (AirComp) system, in which multiple wireless devices (WDs) send individual messages to one access point (AP) for distributed…

Information Theory · Computer Science 2022-03-01 Yilong Chen , Guangxu Zhu , Jie Xu

The development of 6G networks brings an increasing variety of data services, which motivates the hybrid computation paradigm that coordinates the over-the-air computation (AirComp) and edge computing for diverse and effective data…

Signal Processing · Electrical Eng. & Systems 2026-04-14 Yudan Jiang , Xiao Tang , Jinxin Liu , Qinghe Du , Dusit Niyato , Zhu Han

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

A novel over-the-air computation (AirComp) framework empowered by movable antennas (MAs) is proposed to significantly enhance computation accuracy. Within this framework, the joint optimization of transmit power control, antenna…

Signal Processing · Electrical Eng. & Systems 2025-11-04 Zhenqiao Cheng , Nanxi Li , Jianchi Zhu , Shan Yang , Chongjun Ouyang , Xingqi Zhang

Over-the-air computation (OAC) is a promising technique to achieve fast model aggregation across multiple devices in federated edge learning (FEEL). In addition to the analog schemes, one-bit digital aggregation (OBDA) scheme was proposed…

Information Theory · Computer Science 2023-05-19 Li Qiao , Zhen Gao , Zhongxiang Li , Deniz Gündüz

With the high flexibility of supporting resource-intensive and time-sensitive applications, unmanned aerial vehicle (UAV)-assisted mobile edge computing (MEC) is proposed as an innovational paradigm to support the mobile users (MUs). As a…

Signal Processing · Electrical Eng. & Systems 2023-02-20 Wenshuai Liu , Bin Li , Wancheng Xie , Yueyue Dai , Zesong Fei