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This chapter overviews the concept of Smart Wireless Environments (SWEs) motivated by the emerging technology of Reconfigurable Intelligent Surfaces (RISs). The operating principles and state-of-the-art hardware architectures of…

信号处理 · 电气工程与系统科学 2025-12-23 George C. Alexandropoulos , Kostantinos D. Katsanos , George Stamatelis , Ioannis Gavras

In the realm of wireless communications in 5G, 6G and beyond, deploying unmanned aerial vehicle (UAV) has been an innovative approach to extend the coverage area due to its easy deployment. Moreover, reconfigurable intelligent surface (RIS)…

网络与互联网体系结构 · 计算机科学 2022-12-09 Pyae Sone Aung , Yu Min Park , Yan Kyaw Tun , Zhu Han , Choong Seon Hong

Reconfigurable Intelligent Surface (RIS) has becoming a useful tool in future wireless communication systems for close-distance communication network. This paper we use Reconfigurable Intelligent Surface (RIS) for downlink multi-user…

信息论 · 计算机科学 2021-02-02 RuiTianYi Lu

With the significant advancements in optical computing platforms recently capable of performing various primitive operations, a seamless integration of optical computing into very fabric of optical communication links is envisioned, paving…

网络与互联网体系结构 · 计算机科学 2025-05-27 Dao Thanh Hai , Isaac Woungang

Reconfigurable intelligent surface (RIS) has emerged as a promising technology for achieving high spectrum and energy efficiency in future wireless communication networks. In this paper, we investigate an RIS-aided single-cell multi-user…

信息论 · 计算机科学 2021-05-04 Zhiyang Li , Ming Chen , Zhaohui Yang , Jingwen Zhao , Yinlu Wang , Jianfeng Shi , Chongwen Huang

This paper considers a reconfigurable intelligent surface (RIS) aided orthogonal frequency division multiplexing (OFDM) relaying system, and investigates the joint design of RIS passive beamforming and subcarrier matching under two cases,…

信息论 · 计算机科学 2022-10-06 Tong Zhang , Shuai Wang , Yufan Zhuang , Changsheng You , Miaowen Wen , Yik-Chung Wu

Over-the-air computation (AirComp) has been recognized as a promising technique in Internet-of-Things (IoT) networks for fast data aggregation from a large number of wireless devices. However, as the number of devices becomes large, the…

信号处理 · 电气工程与系统科学 2020-06-09 Xiongfei Zhai , Xihan Chen , Jie Xu , Derrick Wing Kwan Ng

Over-the-air computation (AirComp) is a known technique in which wireless devices transmit values by analog amplitude modulation so that a function of these values is computed over the communication channel at a common receiver. The…

信号处理 · 电气工程与系统科学 2023-03-21 Saeed Razavikia , Jose Mairton Barros da Silva , Carlo Fischione

We investigate the benefits of integrating unmanned aerial vehicles (UAVs) with reconfigurable intelligent surface (RIS) elements to passively relay information sampled by Internet of Things devices (IoTDs) to the base station (BS). In…

信号处理 · 电气工程与系统科学 2020-11-11 Moataz Samir , Mohamed Elhattab , Chadi Assi , Sanaa Sharafeddine , Ali Ghrayeb

We study a distributed machine learning problem carried out by an edge server and multiple agents in a wireless network. The objective is to minimize a global function that is a sum of the agents' local loss functions. And the optimization…

信息论 · 计算机科学 2021-12-03 Howard H. Yang , Zihan Chen , Tony Q. S. Quek , H. Vincent Poor

Neural Ordinary Differential Equations (ODE) are a promising approach to learn dynamic models from time-series data in science and engineering applications. This work aims at learning Neural ODE for stiff systems, which are usually raised…

数值分析 · 数学 2021-10-04 Suyong Kim , Weiqi Ji , Sili Deng , Yingbo Ma , Christopher Rackauckas

In-sensor computing, which integrates computation directly within the sensor, has emerged as a promising paradigm for machine vision applications such as AR/VR and smart home systems. By processing data on-chip before transmission, it…

图像与视频处理 · 电气工程与系统科学 2025-05-06 Chengwei Zhou , Sreetama Sarkar , Yuming Li , Arnab Sanyal , Gourav Datta

Users' desire for enhanced performance drive the inevitable technological progress on vertical applications in wireless communication systems. To meet these demands, researchers vigorously investigate potential 6G and beyond technologies…

信号处理 · 电气工程与系统科学 2024-07-15 Emre Arslan , Ali Tugberk Dogukan , Fatih Kilinc , Ertugrul Basar

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…

信号处理 · 电气工程与系统科学 2025-07-08 Biao Dong , Bin Cao , Qinyu Zhang

We consider a narrowband MIMO reconfigurable intelligent surface (RIS)-assisted wireless communication system and use tensor signal modelling techniques to individually estimate all communication channels including the non-RIS channels…

信号处理 · 电气工程与系统科学 2023-11-03 Alexander James Fernandes , Ioannis Psaromiligkos

Over-the-air computation (AirComp) seamlessly integrates communication and computation by exploiting the waveform superposition property of multiple-access channels. Different from the existing works that focus on transceiver design of…

信号处理 · 电气工程与系统科学 2021-06-02 Min Fu , Yong Zhou , Yuanming Shi , Wei Chen , Rui Zhang

Residual networks (ResNets) are a deep learning architecture that substantially improved the state of the art performance in certain supervised learning tasks. Since then, they have received continuously growing attention. ResNets have a…

机器学习 · 计算机科学 2020-03-02 Johannes Müller

Conventional channel estimation (CE) for Internet of Things (IoT) systems encounters challenges such as low spectral efficiency, high energy consumption, and blocked propagation paths. Although superimposed pilot-based CE schemes and the…

信号处理 · 电气工程与系统科学 2022-12-08 Chaojin Qing , Li Wang , Lei Dong , Guowei Ling , Jiafan Wang

As power systems transition toward renewable-rich and inverter-dominated operations, accurate time-domain dynamic analysis becomes increasingly critical. Such analysis supports key operational tasks, including transient stability…

人工智能 · 计算机科学 2026-04-17 Haoran Li , Lihao Mai , Chenhan Xiao , Erik Blasch , Yang Weng

Over-the-air computation (AirComp) enables efficient wireless data aggregation in sensor networks by simultaneous processing of calculation and communication. This paper proposes a novel precoder design for AirComp that incorporates…

信号处理 · 电气工程与系统科学 2022-09-05 Ayano Nakai-Kasai , Tadashi Wadayama