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Intelligent Reflecting Surface (IRS) technology is revolutionizing wireless communications by shifting from channel adaptation to a responsive wireless environment. This paper introduces a multi-IRS assisted millimeter wave (mm-wave)…

信号处理 · 电气工程与系统科学 2024-01-04 Alireza Qazavi Khorasgani , Foroogh S. Tabataba , Mehdi Naderi Soorki , Mohammad Sadegh Fazel

Intelligent reflect surface (IRS) is a potential technology to build programmable wireless environment in future communication systems. In this paper, we consider an IRS-assisted multi-base station (multi-BS) multi-user millimeter wave…

信息论 · 计算机科学 2020-11-04 Dan Zhao , Hancheng Lu , Yazheng Wang , Huan Sun , Yongqiang Gui

Intelligent reflecting surface (IRS) has emerged as a promising technique to extend the wireless signal coverage of access point (AP) and improve the communication performance cost-effectively. In order to reduce the path-loss of the…

信息论 · 计算机科学 2024-01-17 Yuwei Huang , Lipeng Zhu , Rui Zhang

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…

信息论 · 计算机科学 2022-10-17 Yunlong Cai , Ming-Min Zhao , Kaidi Xu , Rui Zhang

In this paper, we consider a challenging secure wireless sensing scenario where a legitimate radar station (LRS) intends to detect a target at unknown location in the presence of an unauthorized radar station (URS). We aim to enhance the…

信息论 · 计算机科学 2023-08-08 Xiaodan Shao , Rui Zhang

Applications of intelligent reflecting surfaces (IRSs) in wireless networks have attracted significant attention recently. Most of the relevant literature is focused on the single cell setting where a single IRS is deployed and perfect…

信号处理 · 电气工程与系统科学 2021-04-02 Junghoon Kim , Seyyedali Hosseinalipour , Taejoon Kim , David J. Love , Christopher G. Brinton

Intelligent reflecting surface (IRS), which is capable to adjust propagation conditions by controlling phase shifts of the reflected waves that impinge on the surface, has been widely analyzed for enhancing the performance of wireless…

系统与控制 · 电气工程与系统科学 2021-06-29 Shuhang Zhang , Hongliang Zhang , Boya Di , Yunhua Tan , Marco Di Renzo , Zhu Han , H. Vincent Poor , Lingyang Song

We investigate the use of an intelligent reflecting surface (IRS) in a millimeter-wave (mmWave) vehicular communication network. An intelligent reflecting surface consists of passive elements, which can reflect the incoming signals with…

信号处理 · 电气工程与系统科学 2020-11-09 Dilin Dampahalage , K. B. Shashika Manosha , Nandana Rajatheva , MattiLatva-aho

Channel estimation is a practical challenge for intelligent reflecting surface (IRS) aided wireless communication. As the number of IRS reflecting elements or IRS-aided users increases, the channel training overhead becomes excessively…

信息论 · 计算机科学 2021-08-27 Xinrong Guan , Qingqing Wu , Rui Zhang

We investigate the capacity of a broadcast channel with a multi-antenna base station (BS) sending independent messages to multiple users, aided by IRSs with N elements. In particular, both the distributed and centralized IRS deployment…

信息论 · 计算机科学 2024-10-24 Guangji Chen , Qingqing Wu , Wen Chen , Yanzhao Hou , Mengnan Jian , Shunqing Zhang , Jun Li

In this article, we overview intelligent reflecting surface (IRS)-empowered wireless communication systems. We first present the fundamentals of IRS-assisted wireless transmission. On this basis, we explore the integration of IRS with…

The current literature on intelligent reflecting surface (IRS) focuses on optimizing the IRS phase shifts to yield coherent beamforming gains, under the assumption of perfect channel state information (CSI) of individual IRS-assisted links,…

信息论 · 计算机科学 2021-03-19 Qurrat-Ul-Ain Nadeem , Alessio Zappone , Anas Chaaban

The analysis and optimization of single intelligent reflecting surface (IRS)-assisted systems have been extensively studied, whereas little is known regarding multiple-IRS-assisted systems. This paper investigates the analysis and…

信息论 · 计算机科学 2022-06-07 Gengfa Ding , Feng Yang , Lianghui Ding , Ying Cui

Intelligent reflecting surface (IRS) is envisioned as a promising technology to broaden signal coverage and enhance transmission in terahertz (THz) communications. Due to the passivity of IRS, the channel measurement can not be achieved by…

信息论 · 计算机科学 2020-03-17 Boyu Ning , Zhi Chen , Wenrong Chen , Yiming Du

A statistical characterization of the fundamental performance bounds of an intelligent reflective surface (IRS) intended for aiding wireless communications is presented. To this end, the outage probability, average symbol error probability,…

信号处理 · 电气工程与系统科学 2020-02-14 Dhanushka Kudathanthirige , Dulaj Gunasinghe , Gayan Amarasuriya

Simultaneous wireless information and power transfer (SWIPT) and intelligent reflecting surface (IRS) are two promising techniques for providing enhanced wireless communication capability and sustainable energy supply to energy-constrained…

信号处理 · 电气工程与系统科学 2020-09-10 Wei Sun , Qingyang Song , Lei Guo , Jun Zhao

One main challenge for implementing intelligent reflecting surface (IRS) aided communications lies in the difficulty to obtain the channel knowledge for the base station (BS)-IRS-user cascaded links, which is needed to design…

信息论 · 计算机科学 2023-09-18 He Sun , Weidong Mei , Lipeng Zhu , Rui Zhang

This paper studies multi-active intelligent-reflecting-surface (IRS) cooperative sensing, in which multiple active IRSs are deployed in a distributed manner to help the base station (BS) provide multi-view sensing. We focus on the scenario…

信息论 · 计算机科学 2024-04-23 Yuan Fang , Xianghao Yu , Jie Xu

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

Intelligent reflecting surface (IRS) has recently emerged as a promising technology for beyond fifth-generation (B5G) and 6G networks conceived from metamaterials that smartly tunes the signal reflections via a large number of low-cost…

信息论 · 计算机科学 2023-08-22 Jyotsna Rani , Deepak Mishra , Ganesh Prasad , Ashraf Hossain , Swades De , Kuntal Deka