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In this paper, we study an intelligent reflecting surface (IRS)-aided radar-communication (Radcom) system, where the IRS is leveraged to help Radcom base station (BS) transmit the joint of communication signals and radar signals for serving…

Information Theory · Computer Science 2022-03-29 Meng Hua , Qingqing Wu , Chong He , Shaodan Ma , Wen Chen

This paper studies an intelligent reflecting surface (IRS)-assisted multiuser multiple-input single-output (MISO) simultaneous wireless information and power transfer (SWIPT) system. In this system, a multi-antenna access point (AP) uses…

Signal Processing · Electrical Eng. & Systems 2019-10-17 Yizheng Tang , Ganggang Ma , Hailiang Xie , Jie Xu , Xiao Han

This paper considers an intelligent reflecting surface (IRS) assisted multi-input multi-output (MIMO) power splitting (PS) based simultaneous wireless information and power transfer (SWIPT) system with multiple PS receivers (PSRs). The…

Information Theory · Computer Science 2021-06-01 Chen He , Xie Xie , Kun Yang , Z. Jane Wang

This letter focuses on the secure transmission for an intelligent reflecting surface (IRS)-assisted millimeter-wave (mmWave) and terahertz (THz) systems, in which a base station (BS) communicates with its destination via an IRS, in the…

Information Theory · Computer Science 2020-05-28 Jingping Qiao , Mohamed-Slim Alouini

In cognitive radio (CR) communication systems, achieving high secondary user (SU) rate in the presence of strong cross-link interference with the primary user (PU) is challenging. In this letter, we exploit the emerging intelligent…

Information Theory · Computer Science 2020-03-10 Xinrong Guan , Qingqing Wu , Rui Zhang

Hybrid beamforming is an emerging technology for massive multiple-input multiple-output (MIMO) systems due to the advantages of lower complexity, cost, and power consumption. Recently, intelligent reflection surface (IRS) has been proposed…

Signal Processing · Electrical Eng. & Systems 2024-04-26 Jeongjae Lee , Songnam Hong

Intelligent reflecting surface (IRS) has emerged as a promising technique to control wireless propagation environment for enhancing the communication performance cost-effectively. However, the rapidly time-varying channel in high-mobility…

Information Theory · Computer Science 2023-02-16 Zixuan Huang , Beixiong Zheng , Rui Zhang

Intelligent reflecting surface (IRS) is envisioned to play a significant role in future wireless communication systems thanks to its powerful capability of enabling smart and reconfigurable radio environment. In this paper, we study the…

Information Theory · Computer Science 2021-02-23 Weidong Mei , Rui Zhang

Intelligent reflecting surfaces (IRSs) have emerged as a transformative technology for wireless networks by improving coverage, capacity, and energy efficiency through intelligent manipulation of wireless propagation environments. This…

Signal Processing · Electrical Eng. & Systems 2025-03-06 Qingqing Wu , Guangji Chen , Qiaoyan Peng , Wen Chen , Yifei Yuan , Zhenqiao Cheng , Jianwu Dou , Zhiyong Zhao , Ping Li

The intelligent reflecting surface (IRS) alters the behavior of wireless media and, consequently, has potential to improve the performance and reliability of wireless systems such as communications and radar remote sensing. Recently,…

Signal Processing · Electrical Eng. & Systems 2023-04-13 Ahmet M. Elbir , Kumar Vijay Mishra , M. R. Bhavani Shankar , Symeon Chatzinotas

We propose a novel design of a dual-function radar communication (DFRC) system aided by an Intelligent Reflecting Surface (IRS). We consider a scenario with one target and multiple communication receivers, where there is no line-of-sight…

Signal Processing · Electrical Eng. & Systems 2022-04-12 Yikai Li , Athina Petropulu

We consider transmit beamforming and reflection pattern design in reconfigurable intelligent surface (RIS)-assisted integrated sensing and communication (ISAC) systems to jointly precode communication symbols and radar waveforms. We treat…

Signal Processing · Electrical Eng. & Systems 2022-06-16 R. S. Prasobh Sankar , Sundeep Prabhakar Chepuri , Yonina C. Eldar

This paper investigates an intelligent reflecting surface (IRS)-aided multi-cell multiple-input single-output (MISO) system consisting of several multi-antenna base stations (BSs) each communicating with a single-antenna user, in which an…

Signal Processing · Electrical Eng. & Systems 2020-02-10 Hailiang Xie , Jie Xu , Ya-Feng Liu

As an excellent aided communication tool, intelligent reflecting surface (IRS) can make a significant rate enhancement and coverage extension. In this paper, we present an investigation on beamforming in an IRS-aided directional modulation…

Signal Processing · Electrical Eng. & Systems 2022-09-30 Yeqing Lin , Rongen Dong , Peng Zhang , Feng Shu , Jiangzhou Wang

This paper studies an multi-cluster over-the-air computation (AirComp) system, where an intelligent reflecting surface (IRS) assists the signal transmission from devices to an access point (AP). The clusters are activated to compute…

Information Theory · Computer Science 2023-07-18 Yapeng Zhao , Qingqing Wu , Wen Chen , Celimuge Wu , Octavia A. Dobre

This paper proposes a novel location information aided multiple intelligent reflecting surface (IRS) systems. Assuming imperfect user location information, the effective angles from the IRS to the users are estimated, which is then used to…

Information Theory · Computer Science 2020-08-24 Xiaoling Hu , Caijun Zhong , Yu Zhang , Xiaoming Chen , Zhaoyang Zhang

Reconfigurable Intelligent Surfaces (RIS) or Intelligent Reflecting Surfaces (IRS) are metasurfaces that can be deployed in various places in wireless environments to make these environments controllable and reconfigurable. In this paper,…

Information Theory · Computer Science 2020-01-22 S. Mohammad Razavizadeh , Tommy Svensson

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…

Information Theory · Computer Science 2024-09-24 Beixiong Zheng , Tiantian Ma , Jie Tang , Changsheng You , Shaoe Lin , Kai-Kit Wong

Prior studies on intelligent reflecting surface (IRS) have mostly considered wireless communication systems aided by a single passive IRS, which, however, has limited control over wireless propagation environment and suffers severe…

Information Theory · Computer Science 2023-01-09 Yunpu Zhang , Changsheng You , Beixiong Zheng

In this paper, we propose intelligent reflecting surfaces (IRS) assisted secure wireless communications with multi-input and multi-output antennas (IRS-MIMOME). The considered scenario is an access point (AP) equipped with multiple antennas…

Information Theory · Computer Science 2020-01-27 Weiheng Jiang , Yu Zhang , Jinsong Wu , Wenjiang Feng , Yi Jin