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Intelligent reflecting surfaces (IRSs) have several prominent advantages, including improving the level of wireless communication security and privacy. In this work, we focus on the latter aspect and introduce a strategy to counteract the…

Networking and Internet Architecture · Computer Science 2024-02-23 Francesco Malandrino , Alessandro Nordio , Carla Fabiana Chiasserini

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…

Information Theory · Computer Science 2019-09-04 Biqian Feng , Yongpeng Wu , Mengfan Zheng

Intelligent reflecting surface (IRS) is an emerging technology for future wireless communications including 5G and especially 6G. It consists of a large 2D array of (semi-)passive scattering elements that control the electromagnetic…

Signal Processing · Electrical Eng. & Systems 2021-04-21 Gilderlan T. de Araújo , André L. F. de Almeida , Rémy Boyer

This paper investigates the model aggregation process in an over-the-air federated learning (AirFL) system, where an intelligent reflecting surface (IRS) is deployed to assist the transmission from users to the base station (BS). With the…

Information Theory · Computer Science 2021-03-23 Jingheng Zheng , Wanli Ni , Hui Tian

Intelligent reflecting surface (IRS) has recently received significant attention in wireless networks owing to its ability to smartly control the wireless propagation through passive reflection. Although prior works have employed the IRS to…

Information Theory · Computer Science 2023-05-01 Guangji Chen , Qingqing Wu

Intelligent reflecting surface (IRS) is a promising technology to improve the performance of wireless powered communication networks (WPCNs) due to its capability to reconfigure signal propagation environments via smart reflection. In…

Information Theory · Computer Science 2021-03-16 Qingqing Wu , Xiaobo Zhou , Robert Schober

In this paper, an intelligent reflecting surface (IRS) is leveraged to enhance the physical layer security of an integrated sensing and communication (ISAC) system in which the IRS is deployed to not only assist the downlink communication…

Information Theory · Computer Science 2022-07-20 Meng Hua , Qingqing Wu , Wen Chen , Octavia A. Dobre , A. Lee Swindlehurst

Intelligent reflecting surface (IRS) operating in the terahertz (THz) band has recently gained considerable interest due to its high spectrum bandwidth. Due to the exploitation of large scale of IRS, there is a high probability that the…

Signal Processing · Electrical Eng. & Systems 2025-05-28 Chi Qiu , Qingqing Wu , Wen Chen , Meng Hua , Wanming Hao , Mengnan Jian , Fen Hou

This article introduces a neural network-based signal processing framework for intelligent reflecting surface (IRS) aided wireless communications systems. By modeling radio-frequency (RF) impairments inside the "meta-atoms" of IRS…

Signal Processing · Electrical Eng. & Systems 2021-02-09 Zhou Zhou , Kangjun Bai , Nima Mohammadi , Yang Yi , Lingjia Liu

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…

Information Theory · Computer Science 2021-11-05 Bifeng Ling , Jiangbin Lyu , Liqun Fu

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…

Information Theory · Computer Science 2020-04-21 Xianghao Yu , Dongfang Xu , Ying Sun , Derrick Wing Kwan Ng , Robert Schober

This chapter is devoted to discussing the integration of intelligent reflecting surfaces (IRSs), or intelligent walls, in optical wireless communication (OWC) systems. IRS technology is a revolutionary concept that enables communication…

Signal Processing · Electrical Eng. & Systems 2023-04-11 Anil Yesilkaya , Hanaa Abumarshoud , Harald Haas

Compared with traditional half-duplex wireless systems, the application of emerging full-duplex (FD) technology can potentially double the system capacity theoretically. However, conventional techniques for suppressing self-interference…

Information Theory · Computer Science 2023-06-27 Chi Qiu , Meng Hua , Qingqing Wu , Wen Chen , Shaodan Ma , Fen Hou , Derrick Wing Kwan Ng , A. Lee Swindlehurst

In this letter, we consider an intelligent reflecting surface (IRS)-assisted multiuser communication system, where an IRS is deployed to provide virtual line-of-sight (LoS) links between an access point (AP) and multiple users. We consider…

Information Theory · Computer Science 2020-06-30 Changsheng You , Beixiong Zheng , Rui Zhang

Intelligent reflecting surface (IRS) has become a promising technology to aid next generation wireless communication systems. In this paper, we develop an alternating beamforming technique with a novel concept of IRS element allocation for…

Information Theory · Computer Science 2022-06-28 Hyesang Cho , Junil Choi

Intelligent reflecting surfaces (IRSs) have emerged as a promising solution to mitigate line-of-sight (LoS) blockages and enhance signal coverage in optical wireless communication (OWC) systems with minimal additional power. In this work,…

Systems and Control · Electrical Eng. & Systems 2025-10-15 Ahrar N. Hamad , Ahmad Adnan Qidan , Taisir E. H. El-Gorashi , Jaafar M. H. Elmirghani

In this letter, we consider an intelligent reflecting surface (IRS)-aided wireless communication system, where an active or passive IRS is employed to assist the communication between an access point and a user. First, we consider the…

Information Theory · Computer Science 2021-09-13 Changsheng You , Rui Zhang

Intelligent reflecting surface (IRS) is a promising technology being considered for future wireless communications due to its ability to control signal propagation. This paper considers the joint active and passive beamforming problem for…

Signal Processing · Electrical Eng. & Systems 2022-02-09 Fangzhou Wang , Hongbin Li , Jun Fang

Intelligent reflecting surface (IRS) can be densely deployed in wireless networks to significantly enhance the communication channels. In this letter, we consider the downlink transmission from a multi-antenna base station (BS) to a…

Information Theory · Computer Science 2022-02-16 Weidong Mei , Rui Zhang

Cell-free networks are considered as a promising distributed network architecture to satisfy the increasing number of users and high rate expectations in beyond-5G systems. However, to further enhance network capacity, an increasing number…

Signal Processing · Electrical Eng. & Systems 2020-06-23 Shaocheng Huang , Yu Ye , Ming Xiao , H. Vincent Poor , Mikael Skoglund