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A novel framework of intelligent reflecting surface (IRS)-aided multiple-input single-output (MISO) non-orthogonal multiple access (NOMA) network is proposed, where a base station (BS) serves multiple clusters with unfixed number of users…

Information Theory · Computer Science 2020-12-02 Xinyu Gao , Yuanwei Liu , Xiao Liu , Zhijin Qin

Intelligent reflecting surfaces (IRSs) have emerged as a promising economical solution to implement cell-free networks. However, the performance gains achieved by IRSs critically depend on smartly tuned passive beamforming based on the…

Information Theory · Computer Science 2022-02-22 Xie Xie , Chen He , Xiaoya Li , Zhu Han , Z. Jane Wang

Intelligent reflecting surfaces (IRSs) have become a vital technology for improving the spectrum and energy efficiency of forthcoming wireless networks. Nevertheless, practical implementation is obstructed by the excessive overhead…

Signal Processing · Electrical Eng. & Systems 2025-11-07 Xianhua Yu , Dong Li , Bowen Gu , Liuqing Yang , Sumei Sun , George K. Karagiannidis

Intelligent reflecting surface (IRS) has recently emerged as a new solution to enhance wireless communication performance via passive signal reflection. In this letter, we unlock the potential of IRS controller in relaying information and…

Information Theory · Computer Science 2021-06-24 Beixiong Zheng , Rui Zhang

A novel framework of intelligent reflecting surface (IRS)-aided multiple-input single-output (MISO) non-orthogonal multiple access (NOMA) network is proposed, where a base station (BS) serves multiple clusters with unfixed number of users…

Signal Processing · Electrical Eng. & Systems 2021-12-02 X. Gao , Y. Liu , X. Liu , L. Song

In this letter, an intelligent reflecting surface (IRS) enhanced full-duplex MIMO two-way communication system is studied. The system sum rate is maximized through jointly optimizing the source precoders and the IRS phase shift matrix.…

Signal Processing · Electrical Eng. & Systems 2020-03-03 Yu Zhang , Caijun Zhong , Zhaoyang Zhang , Weidang Lu

We consider a broadband over-the-air computation empowered model aggregation approach for wireless federated learning (FL) systems and propose to leverage an intelligent reflecting surface (IRS) to combat wireless fading and noise. We first…

Information Theory · Computer Science 2023-10-12 Deyou Zhang , Ming Xiao , Zhibo Pang , Lihui Wang , H. Vincent Poor

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

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 to enhance the coverage and performance of wireless networks. We consider the application of IRS to non-orthogonal multiple access (NOMA), where a base station transmits…

Information Theory · Computer Science 2021-01-29 Xinwei Yue , Yuanwei Liu

Intelligent reflecting surface (IRS) is a promising technology to boost the efficiency of wireless energy transfer (WET) systems. However, for a multiuser WET system, simultaneous multi-beam energy transmission is generally required to…

Information Theory · Computer Science 2022-05-19 Chi Qiu , Qingqing Wu , Meng Hua , Xinrong guan , Yuan Wu

Intelligent reflecting surfaces (IRSs) constitute a disruptive wireless communication technique capable of creating a controllable propagation environment. In this paper, we propose to invoke an IRS at the cell boundary of multiple cells to…

Signal Processing · Electrical Eng. & Systems 2020-04-27 Cunhua Pan , Hong Ren , Kezhi Wang , Wei Xu , Maged Elkashlan , Arumugam Nallanathan , Lajos Hanzo

Combining intelligent reflecting surface (IRS) and non-orthogonal multiple access (NOMA) is an effective solution to enhance communication coverage and energy efficiency. In this paper, we focus on an IRS-assisted NOMA network and propose…

Signal Processing · Electrical Eng. & Systems 2020-09-14 Fang Fang , Yanqing Xu , Quoc-Viet Pham , Zhiguo Ding

Intelligent reflecting surfaces (IRSs) are a promising low-cost solution for achieving high spectral and energy efficiency in future communication systems by enabling the customization of wireless propagation environments. Despite the…

Information Theory · Computer Science 2024-04-30 Yifei Wu , Dongfang Xu , Derrick Wing Kwan Ng , Robert Schober , Wolfgang Gerstacker

As a revolutionary paradigm for intelligently controlling wireless channels, intelligent reflecting surface (IRS) has emerged as a promising technology for future sixth-generation (6G) wireless communications. While IRS-aided communication…

Signal Processing · Electrical Eng. & Systems 2025-04-23 Shengsheng Zhang , Taotao Ji , Meng Hua , Yongming Huang , Luxi Yang

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)…

Signal Processing · Electrical Eng. & Systems 2024-01-04 Alireza Qazavi Khorasgani , Foroogh S. Tabataba , Mehdi Naderi Soorki , Mohammad Sadegh Fazel

Intelligent reflecting surface (IRS) is envisioned to be a new and revolutionizing technology for achieving spectrum and energy efficient wireless communication networks cost-effectively in the future. Specifically, an IRS consists of a…

Information Theory · Computer Science 2019-08-13 Qingqing Wu , Rui Zhang

We propose and analyze secret key generation using intelligent reflecting surface (IRS) assisted wireless communication networks. To this end, we first formulate the minimum achievable secret key capacity for an IRS acting as a passive…

Signal Processing · Electrical Eng. & Systems 2021-03-10 Zijie Ji , Phee Lep Yeoh , Deyou Zhang , Gaojie Chen , Yan Zhang , Zunwen He , Hao Yin , Yonghui Li

In this letter, we analyze a terrestrial wireless communication network assisted by an aerial intelligent reflecting surface (IRS). We consider a packet scheduling problem at the ground base station (BS) aimed at improving the information…

Signal Processing · Electrical Eng. & Systems 2022-03-10 Wanting Lyu , Yue Xiu , Songjie Yang , Phee Lep Yeoh , Yonghui Li

This work investigates the effect of double intelligent reflecting surface (IRS) in improving the spectrum efficient of multi-user multiple-input multiple-output (MIMO) network operating in the millimeter wave (mmWave) band. Specifically,…

Information Theory · Computer Science 2021-11-29 Hehao Niu , Zheng Chu , Fuhui Zhou , Cunhua Pan , Derrick Wing Kwan Ng , Huan X. Nguyen
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