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This paper proposes a novel transmission policy for an intelligent reflecting surface (IRS) assisted wireless powered sensor network (WPSN). An IRS is deployed to enhance the performance of wireless energy transfer (WET) and wireless…

Signal Processing · Electrical Eng. & Systems 2021-04-30 Zheng Chu , Pei Xiao , De Mi , Wanming Hao , Mohsen Khalily , Lie-Liang Yang

This paper investigates the passive beamforming and deployment design for an intelligent reflecting surface (IRS) aided full-duplex (FD) wireless system, where an FD access point (AP) communicates with an uplink (UL) user and a downlink…

Information Theory · Computer Science 2022-10-17 Yunlong Cai , Ming-Min Zhao , Kaidi Xu , Rui Zhang

In this paper, the secure performance of multiuser multiple-input single-output wireless communications systems assisted by a multifunctional active intelligent reflection surface (IRS) is investigated. The active IRS can simultaneously…

Signal Processing · Electrical Eng. & Systems 2022-05-06 Shaokang Hu , Derrick Wing Kwan Ng , Jinhong Yuan

This paper considers an intelligent reflecting sur-face (IRS)-aided simultaneous wireless information and power transfer (SWIPT) network, where multiple users decode data and harvest energy from the transmitted signal of a transmit-ter. The…

Information Theory · Computer Science 2021-03-24 Shayan Zargari , Ata Khalili , Qingqing Wu , Mohammad Robat Mili , Derrick Wing Kwan Ng

In this paper, we study an active IRS-aided simultaneous wireless information and power transfer (SWIPT) system. Specifically, an active IRS is deployed to assist a multi-antenna access point (AP) to convey information and energy…

Information Theory · Computer Science 2022-08-05 Ying Gao , Qingqing Wu , Guangchi Zhang , Wen Chen , Derrick Wing Kwan Ng , Marco Di Renzo

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

In this paper, secure wireless information and power transfer with intelligent reflecting surface (IRS) is proposed for a multiple-input single-output (MISO) system. Under the secrecy rate (SR) and the reflecting phase shifts of IRS…

Signal Processing · Electrical Eng. & Systems 2019-11-05 Weiping Shi , Xiaobo Zhou , Linqiong Jia , Yongpeng Wu , Feng Shu , Jiangzhou Wang

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

Intelligent reflecting surface (IRS) is a new promising technology that is able to reconfigure the wireless propagation channel via smart and passive signal reflection. In this paper, we investigate the capacity region of a two-user…

Information Theory · Computer Science 2021-07-12 Shuowen Zhang , Rui Zhang

This paper investigates multiuser multi-input single-output (MISO) downlink communications assisted by a self-sustainable intelligent reflection surface (IRS), which can harvest power from the received signals. We study the joint design of…

Signal Processing · Electrical Eng. & Systems 2020-05-26 Shaokang Hu , Zhiqiang Wei , Yuanxin Cai , Derrick Wing Kwan Ng , Jinhong Yuan

Intelligent reflecting surface (IRS) is a cost-efficient technique to improve power efficiency and spectral efficiency. However, IRS-aided multi-antenna transmission needs to jointly optimize the passive and active beamforming, imposing a…

Information Theory · Computer Science 2022-05-03 Wei Jiang , Hans Dieter Schotten

Intelligent reflecting surface (IRS) is a promising technology for achieving spectrum and energy efficient wireless networks cost-effectively. Most existing works on IRS have focused on exploiting IRS to enhance the performance of wireless…

Information Theory · Computer Science 2021-06-25 Qingqing Wu , Xinrong Guan , Rui Zhang

Intelligent reflecting surface (IRS) has been regarded as a promising and revolutionary technology for future wireless communication systems owing to its capability of tailoring signal propagation environment in an…

Signal Processing · Electrical Eng. & Systems 2022-04-14 Wenhao Cai , Rang Liu , Ming Li , Yang Liu , Qingqing Wu , Qian Liu

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…

Information Theory · Computer Science 2020-11-17 Boyu Ning , Zhi Chen , Zhongbao Tian , Shaoqian Li

An intelligent reflecting surface (IRS) is invoked for enhancing the energy harvesting performance of a simultaneous wireless information and power transfer (SWIPT) aided system. Specifically, an IRS-assisted SWIPT system is considered,…

Signal Processing · Electrical Eng. & Systems 2020-02-19 Cunhua Pan , Hong Ren , Kezhi Wang , Maged Elkashlan , Arumugam Nallanathan , Jiangzhou Wang , Lajos Hanzo

In this paper, we study an intelligent reflecting surface (IRS)-assisted system where a multi-antenna base station (BS) serves a single-antenna user with the help of a multi-element IRS in the presence of interference generated by a…

Information Theory · Computer Science 2020-09-25 Yuhang Jia , Chencheng Ye , Ying Cui

In this letter, we design passive beamforming in an intelligent reflecting surface (IRS) assisted multiple-user wireless network. Two different scenarios are considered, namely, multicasting and multi-user downlink transmission. We optimize…

Information Theory · Computer Science 2020-07-22 Ke-Wen Huang , Hui-Ming Wang

In this paper, we study an intelligent reflecting surface (IRS)-aided communication system with single-antenna transmitter and receiver, under imperfect channel state information (CSI). More specifically, we deal with the robust selection…

Signal Processing · Electrical Eng. & Systems 2024-06-12 Christos N. Efrem , Ioannis Krikidis

This paper considers intelligent reflecting surface (IRS)-aided simultaneous wireless information and power transfer (SWIPT) in a multi-user multiple-input single-output (MISO) interference channel (IFC), where multiple transmitters (Txs)…

Information Theory · Computer Science 2024-01-31 Ying Gao , Qingqing Wu , Wen Chen , Celimuge Wu , Derrick Wing Kwan Ng , Naofal Al-Dhahir

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

Signal Processing · Electrical Eng. & Systems 2020-10-26 Hailiang Xie , Jie Xu , Ya-Feng Liu
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