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Intelligent reflecting surfaces (IRSs) have been introduced into wireless communications systems due to their great potential to smartly customize and reconfigure radio propagation environments in a cost-effective manner. Despite the…

信息论 · 计算机科学 2021-03-15 Xianghao Yu , Vahid Jamali , Dongfang Xu , Derrick Wing Kwan Ng , Robert Schober

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…

信息论 · 计算机科学 2020-09-25 Yuhang Jia , Chencheng Ye , Ying Cui

Recently, intelligent reflecting surface (IRS) has emerged as an appealing technique that enables wireless communications with low hardware cost and low power consumption. In this letter, we consider an IRS-assisted point-to-point…

信息论 · 计算机科学 2020-04-17 Boyu Ning , Zhi Chen , Wenjie Chen , Jun Fang

In this paper, we study resource allocation design for secure communication in intelligent reflecting surface (IRS)-assisted multiuser multiple-input single-output (MISO) communication systems. To enhance physical layer security, artificial…

信息论 · 计算机科学 2019-10-29 Dongfang Xu , Xianghao Yu , Yan Sun , Derrick Wing Kwan Ng , Robert Schober

In this paper, we focus on the sum-rate optimization in a multi-user millimeter-wave (mmWave) system with distributed intelligent reflecting surfaces (D-IRSs), where a base station (BS) communicates with users via multiple IRSs. The BS…

信号处理 · 电气工程与系统科学 2021-01-22 Yue Xiu , Wei Sun , Jiao Wu , Guan Gui , Ning Wei , Zhongpei Zhang

Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) is a cutting-edge concept for the sixth-generation (6G) wireless networks. In this paper, we propose a novel system that incorporates STAR-RIS with…

Intelligent reflecting surface (IRS) is a promising new technology for achieving both spectrum and energy efficient wireless communication systems in the future. However, existing works on IRS mainly consider frequency-flat channels and…

信息论 · 计算机科学 2019-11-25 Yifei Yang , Beixiong Zheng , Shuowen Zhang , Rui Zhang

Intelligent reflecting surface (IRS) can be densely deployed in complex environments to create cascaded line-of-sight (LoS) links between base stations (BSs) and users, which significantly enhance the signal coverage. In this paper, we…

信息论 · 计算机科学 2023-07-18 Weidong Mei , Zhi Chen , Rui Zhang

In next-generation wireless networks, reconfigurable intelligent surface (RIS)-assisted multiple-input multiple-output (MIMO) systems are foreseeable to support a large number of antennas at the transceiver as well as a large number of…

信息论 · 计算机科学 2023-01-24 Chang Cai , Xiaojun Yuan , Ying-Jun Angela Zhang

Intelligent reflecting surfaces (IRSs) have received considerable attention from the wireless communications research community recently. In particular, as low-cost passive devices, IRSs enable the control of the wireless propagation…

信息论 · 计算机科学 2019-04-30 Xianghao Yu , Dongfang Xu , Robert Schober

Intelligent reflecting surface (IRS)-assisted full-duplex (FD) terahertz (THz) communication systems have emerged as a promising paradigm to satisfy the escalating demand for ultra-high data rates and spectral efficiency in future wireless…

信息论 · 计算机科学 2025-10-30 Chi Qiu , Wen Chen , Qingqing Wu , Fen Hou , Wanming Hao , Ruiqi Liu , Derrick Wing Kwan Ng

This paper studies an intelligent reflecting surface (IRS)-aided multiple-input-multiple-output (MIMO) full-duplex (FD) wireless-powered communication network (WPCN), where a hybrid access point (HAP) operating in FD broadcasts energy…

信息论 · 计算机科学 2022-09-14 Meng Hua , Qingqing Wu

In this paper, we investigate the resource allocation design for intelligent reflecting surface (IRS)-assisted full-duplex (FD) cognitive radio systems. In particular, a secondary network employs an FD base station (BS) for serving multiple…

信息论 · 计算机科学 2020-03-18 Dongfang Xu , Xianghao Yu , Yan Sun , Derrick Wing Kwan Ng , Robert Schober

Intelligent reflecting surface (IRS) is a promising technology that enables the precise control of the electromagnetic environment in future wireless communication networks. To leverage the IRS effectively, the acquisition of channel state…

信息论 · 计算机科学 2021-10-25 Jiancheng An , Chao Xu , Lu Gan , Chau Yuen , Lajos Hanzo

In this paper, we propose a robust secrecy transmission scheme for intelligent reflecting surface (IRS) aided communication systems. Different from all the existing works where IRS has already been deployed at a fixed location, we take the…

信息论 · 计算机科学 2022-08-01 Jiale Bai , Hui-Ming Wang , Peng Liu

Intelligent reflecting surface (IRS) is envisioned to have abundant applications in future wireless networks by smartly reconfiguring the signal propagation for performance enhancement. Specifically, an IRS consists of a large number of…

信息论 · 计算机科学 2018-09-13 Qingqing Wu , Rui Zhang

The concept of intelligent reflecting surfaces (IRSs) is considered as a promising technology for increasing the efficiency of mobile wireless networks. This is achieved by employing a vast amount of low-cost individually adjustable passive…

网络与互联网体系结构 · 计算机科学 2020-12-01 Kevin Weinberger , Alaa Alameer Ahmad , Aydin Sezgin

Intelligent reflecting surfaces (IRS) have become the subject of many current research efforts, as the ongoing wireless spectrum crunch has made the need to open higher frequency bands a priority. IRS are one of the alternatives proposed to…

信息论 · 计算机科学 2025-12-01 Alessandro Nordio , Alberto Tarable , Francisco J. Escribano

Intelligent reflecting surface (IRS) has drawn a lot of attention recently as a promising new solution to achieve high spectral and energy efficiency for future wireless networks. By utilizing massive low-cost passive reflecting elements,…

信息论 · 计算机科学 2022-10-17 Ming-Min Zhao , Qingqing Wu , Min-Jian Zhao , Rui Zhang

This paper studies the fair transmission design for an intelligent reflecting surface (IRS) aided rate-splitting multiple access (RSMA). IRS is used to establish a good signal propagation environment and enhance the RSMA transmission…

信息论 · 计算机科学 2024-03-18 Shanshan Zhang , Wen Chen , Qingqing Wu , Ziwei Liu , Shunqing Zhang , Jun Li