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Intelligent reflecting surfaces (IRSs) are envisioned as a transformative method for enhancing the physical layer security of future communication networks. However, current IRS-assisted secure wireless system designs incur high time cost…

信号处理 · 电气工程与系统科学 2025-01-23 Yifei Wu , Mehmet Emin Arslan , Niels Neumann , Wolfgang Gerstacker , Robert Schober

Intelligent reflecting surface (IRS) has emerged as an appealing solution to enhance the wireless communication performance by reconfiguring the wireless propagation environment. In this paper, we propose to apply IRS to the physical-layer…

信息论 · 计算机科学 2020-11-17 Boyu Ning , Zhi Chen , Zhongbao Tian , Shaoqian Li

High-speed communication and accurate sensing are of vital importance for future transportation system. Integrated sensing and communication (ISAC) system has the advantages of high spectrum efficiency and low hardware cost, satisfying the…

信号处理 · 电气工程与系统科学 2022-11-21 Zhiqing Wei , Xinyi Yang , Chunwei Meng , Xiaoyu Yang , Kaifeng Han , Chen Qiu , Huici Wu

Intelligent reflecting surfaces (IRSs) are emerging as promising enablers for the next generation of wireless communication systems, because of their ability to customize favorable radio propagation environments. However, with the…

信息论 · 计算机科学 2021-11-25 Dongfang Xu , Xianghao Yu , Derrick Wing Kwan Ng , Robert Schober

Perfect channel state information (CSI) is challenging to obtain due to the limited signal processing capability at the intelligent reflection surface (IRS). In this paper, we study the worst-case robust beamforming design for an IRS-aided…

信号处理 · 电气工程与系统科学 2020-06-02 Gui Zhou , Cunhua Pan , Hong Ren , Kezhi Wang , Marco Di Renzo , Arumugam Nallanathan

Millimeter wave (MmWave) communications is capable of supporting multi-gigabit wireless access thanks to its abundant spectrum resource. However, the severe path loss and high directivity make it vulnerable to blockage events, which can be…

信号处理 · 电气工程与系统科学 2020-10-20 Peilan Wang , Jun Fang , Xiaojun Yuan , Zhi Chen , Huiping Duan , Hongbin Li

Intelligent reflecting surface (IRS) is an emerging technology that is able to significantly improve the performance of wireless communications, by smartly tuning signal reflections at a large number of passive reflecting elements. On the…

信号处理 · 电气工程与系统科学 2023-02-14 Xiaodan Shao , Changsheng You , Rui Zhang

Intelligent reflecting surface (IRS) has become a cost-effective solution for constructing a smart and adaptive radio environment. Most previous works on IRS have jointly designed the active and passive precoding based on perfectly or…

信息论 · 计算机科学 2024-09-24 Beixiong Zheng , Tiantian Ma , Jie Tang , Changsheng You , Shaoe Lin , Kai-Kit Wong

This paper considers a secure multigroup multicast multiple-input single-output (MISO) communication system aided by an intelligent reflecting surface (IRS). Specifically, we aim to minimize the transmit power at the Alice via jointly…

信号处理 · 电气工程与系统科学 2020-08-18 Weiping Shi , Jiayu Li , Guiyang Xia , Yuntian Wang , Xiaobo Zhou , Yonghui Zhang , Feng Shu

Cell-free massive multiple-input multiple-output (MIMO) and intelligent reflecting surface (IRS) are considered as the prospective multiple antenna technologies for beyond the fifth-generation (5G) networks. Cell-free MIMO systems powered…

信息论 · 计算机科学 2022-07-29 Taegyun Noh , Junil Choi

Besides improving communication performance, intelligent reflecting surfaces (IRSs) are also promising enablers for achieving larger sensing coverage and enhanced sensing quality. Nevertheless, in the absence of a direct path between the…

信息论 · 计算机科学 2022-11-08 Kaitao Meng , Qingqing Wu , Robert Schober , Wen Chen

Intelligent reflecting surface (IRS) is deemed as a promising and revolutionizing technology for future wireless communication systems owing to its capability to intelligently change the propagation environment and introduce a new dimension…

信号处理 · 电气工程与系统科学 2021-01-06 Wenhao Cai , Rang Liu , Yang Liu , Ming Li , Qian Liu

In this paper, we investigate the design of secure transmission frameworks with an intelligent reflecting surface (IRS). Our design aims to minimize the system energy consumption in cases of rank-one and full-rank access point (AP)-IRS…

信息论 · 计算机科学 2019-09-04 Biqian Feng , Yongpeng Wu , Mengfan Zheng

Intelligent reflective surface (IRS) is an emergent technology for future wireless communications. It consists of a large 2D array of passive scattering elements that control the electromagnetic properties of radio-frequency waves so that…

信号处理 · 电气工程与系统科学 2020-01-22 Gilderlan T. de Araújo , André L. F. de Almeida

Intelligent reflecting surface (IRS) is a new and revolutionary technology capable of reconfiguring the wireless propagation environment by controlling its massive low-cost passive reflecting elements. Different from prior works that focus…

信息论 · 计算机科学 2021-11-05 Bifeng Ling , Jiangbin Lyu , Liqun Fu

Intelligent Reflecting Surface (IRS) is envisioned to be a technical enabler for the sixth-generation (6G) wireless system. Its potential lies in delivering high performance while maintaining both power efficiency and cost-effectiveness.…

信息论 · 计算机科学 2024-05-17 Wei Jiang , Hans Schotten

Intelligent reflecting surface (IRS) is being considered as a prospective candidate for next-generation wireless communication due to its ability to significantly improve coverage and spectral efficiency by controlling the propagation…

信号处理 · 电气工程与系统科学 2021-04-29 Hasan Albinsaid , Keshav Singh , Ankur Bansal , Sudip Biswas , Chih-Peng Li , Zygmunt J. Haas

We introduce a novel system setup where a backscatter device operates in the presence of an intelligent reflecting surface (IRS). In particular, we study the bistatic backscatter communication (BackCom) system assisted by an IRS. The phase…

信息论 · 计算机科学 2020-09-16 Xiaolun Jia , Jun Zhao , Xiangyun Zhou , Dusit Niyato

In this paper, intelligent reflecting surfaces (IRSs) are employed to enhance the physical layer security in a challenging radio environment. In particular, a multi-antenna access point (AP) has to serve multiple single-antenna legitimate…

信息论 · 计算机科学 2020-04-21 Xianghao Yu , Dongfang Xu , Ying Sun , Derrick Wing Kwan Ng , Robert Schober

Over-the-air computation (AirComp) integrates analog communication with task-oriented computation, serving as a key enabling technique for communication-efficient federated learning (FL) over wireless networks. However, owing to its analog…

信息论 · 计算机科学 2025-01-28 Wei Shi , Jiacheng Yao , Wei Xu , Jindan Xu , Xiaohu You , Yonina C. Eldar , Chunming Zhao