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Intelligent reflecting surfaces (IRSs) are regarded as a key enabler of green wireless communication, due to their capability of customizing favorable wireless propagation environments. In this paper, we investigate resource allocation for…

Information Theory · Computer Science 2020-11-13 Xianghao Yu , Dongfang Xu , Derrick Wing Kwan Ng , Robert Schober

This paper proposes a novel framework of resource allocation in intelligent reflecting surface (IRS) aided multi-cell non-orthogonal multiple access (NOMA) networks, where a sum-rate maximization problem is formulated. To address this…

Signal Processing · Electrical Eng. & Systems 2020-12-08 Wanli Ni , Xiao Liu , Yuanwei Liu , Hui Tian , Yue Chen

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…

Signal Processing · Electrical Eng. & Systems 2021-01-22 Yue Xiu , Wei Sun , Jiao Wu , Guan Gui , Ning Wei , Zhongpei Zhang

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

Most works in IRS-assisted systems have ignored the impact of the inevitable residual hardware impairments (HWIs) at both the transceiver hardware and the IRS while any relevant works have addressed only simple scenarios, e.g., with…

Information Theory · Computer Science 2021-09-07 Anastasios Papazafeiropoulos , Cunhua Pan , Pandelis Kourtessis , Symeon Chatzinotas , John M. Senior

As a low-cost and low-power-consumption passive reflector, intelligent reflecting surface (IRS) can make a significant rate improvement by building a programmable wireless environment. To improve the rate performance and coverage range of…

Information Theory · Computer Science 2022-03-29 Xuehui Wang , Feng Shu , Weiping Shi , Xiaopeng Liang , Rongen Dong , Jun Li , Jiangzhou Wang

An intelligent reflecting surface (IRS)-aided wireless powered mobile edge computing (WP-MEC) system is conceived, where each device's computational task can be divided into two parts for local computing and offloading to mobile edge…

Information Theory · Computer Science 2021-08-24 Guangji Chen , Qingqing Wu , Wen Chen , Derrick Wing Kwan Ng , Lajos Hanzo

Intelligent reflecting surface (IRS) as a promising technology rendering high throughput in future communication systems is compatible with various communication techniques such as non-orthogonal multiple-access (NOMA). In this paper, the…

Information Theory · Computer Science 2022-03-17 Yasaman Omid , S. M. Mahdi Shahabi , Cunhua Pan , Yansha Deng , Arumugam Nallanathan

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

This paper unveils the importance of intelligent reflecting surface (IRS) in a wireless powered sensor network (WPSN). Specifically, a multi-antenna power station (PS) employs energy beamforming to provide wireless charging for multiple…

Signal Processing · Electrical Eng. & Systems 2021-03-22 Zheng Chu , Zhengyu Zhu , Miao Zhang , Fuhui Zhou , Li Zhen , Xueqian Fu , and Naofal Al-Dhahir

This paper investigates intelligent reflecting surface (IRS)-assisted multiple-input single-output (MISO) visible light communication (VLC) networks utilizing the rate-splitting multiple access (RSMA) scheme. {In these networks,} an…

Information Theory · Computer Science 2024-11-15 Yangbo Guo , Jianhui Fan , Ruichen Zhang , Baofang Chang , Derrick Wing Kwan Ng , Dusit Niyato , Dong In Kim

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

This paper proposes a three-dimensional (3D) geometry-based channel model to accurately represent intelligent reflecting surfaces (IRS)-enhanced integrated sensing and communication (ISAC) networks using rate-splitting multiple access…

Information Theory · Computer Science 2025-01-28 Zhangfeng Ma , Ruichen Zhang , Bo Ai , Zhuxian Lian , Linzhou Zeng , Dusit Niyato

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

Cooperative rate splitting (CRS), built upon rate splitting multiple access (RSMA) and opportunistic user relaying, has been recognized as a promising transmission strategy to enhance the user fairness and spectral efficiency in…

Information Theory · Computer Science 2022-08-09 Kangchun Zhao , Yijie Mao , Zhaohui Yang , Lixiang Lian , Bruno Clerckx

The high reflect beamforming gain of the intelligent reflecting surface (IRS) makes it appealing not only for wireless information transmission but also for wireless power transfer. In this letter, we consider an IRS-assisted wireless…

Information Theory · Computer Science 2021-04-28 Dingcai Zhang , Qingqing Wu , Miao Cui , Guangchi Zhang , Dusit Niyato

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

This paper studies an intelligent reflecting surface (IRS)-aided multi-antenna simultaneous wireless information and power transfer (SWIPT) system where an $M$-antenna access point (AP) serves $K$ single-antenna information users (IUs) and…

Information Theory · Computer Science 2024-01-11 Ying Gao , Qingqing Wu , Wen Chen , Yang Liu , Ming Li , Daniel Benevides da Costa

Intelligent reflecting surface (IRS) that enables the control of wireless propagation environment has recently emerged as a promising cost-effective technology for boosting the spectrum and energy efficiency in future wireless communication…

Information Theory · Computer Science 2020-02-25 Samith Abeywickrama , Rui Zhang , Qingqing Wu , Chau Yuen

This paper proposes a two-scale spatial deployment strategy to ensure reliable coverage for multiple target areas, integrating macroscopic intelligent reflecting surfaces (IRSs) and fine-grained movable antennas (MAs). Specifically, IRSs…

Signal Processing · Electrical Eng. & Systems 2026-01-15 Ying Gao , Qingqing Wu , Ziyuan Zheng , Yanze Zhu , Wen Chen , Xin Lin , Shanpu Shen
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