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In this paper, we study an unmanned aerial vehicle (UAV) enabled data collection system, where an intelligent reflecting surface (IRS) is deployed to assist in the communication from a cluster of Internet-of-Things (IoT) devices to a UAV in…

Information Theory · Computer Science 2022-09-01 Zhi Ji , Jia Tu , Xinrong Guan , Wendong Yang , Weiwei Yang , Qingqing Wu

Reconfigurable Intelligent Surface (RIS) has becoming a useful tool in future wireless communication systems for close-distance communication network. This paper we use Reconfigurable Intelligent Surface (RIS) for downlink multi-user…

Information Theory · Computer Science 2021-02-02 RuiTianYi Lu

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

Intelligent reflecting surface (IRS), which consists of a large number of tunable reflective elements, is capable of enhancing the wireless propagation environment in a cellular network by intelligently reflecting the electromagnetic waves…

Signal Processing · Electrical Eng. & Systems 2021-06-10 Tao Jiang , Hei Victor Cheng , Wei Yu

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

Integrated sensing and communication (ISAC) has been envisioned as a promising technology to tackle the spectrum congestion problem for future networks. In this correspondence, we investigate to deploy a reconfigurable intelligent surface…

Signal Processing · Electrical Eng. & Systems 2022-08-04 Honghao Luo , Rang Liu , Ming Li , Yang Liu , Qian Liu

In this paper, we investigate an intelligent reflecting surface (IRS) assisted full-duplex (FD) integrated sensing, communication and computing system. Specifically, an FD base station (BS) provides service for uplink and downlink…

Information Theory · Computer Science 2024-09-04 Wanming Hao , Xue Wu , Xingwang Li , Gangcan Sun , Qingqing Wu , Liang Yang

Hybrid beamforming is an emerging technology for massive multiple-input multiple-output (MIMO) systems due to the advantages of lower complexity, cost, and power consumption. Recently, intelligent reflection surface (IRS) has been proposed…

Signal Processing · Electrical Eng. & Systems 2024-04-26 Jeongjae Lee , Songnam Hong

This paper investigates a multi-user uplink mobile edge computing (MEC) network, where the users offload partial tasks securely to an access point under the non-orthogonal multiple access policy with the aid of a reconfigurable intelligent…

Information Theory · Computer Science 2025-07-23 Tong-Xing Zheng , Xinji Wang , Xin Chen , Di Mao , Jia Shi , Cunhua Pan , Chongwen Huang , Haiyang Ding , Zan Li

While intelligent reflecting surface (IRS) assisted wireless communication has emerged as an important research paradigm, channel state information (CSI) acquisition remains a critical challenge to design the IRS phase-shifts and yield the…

Information Theory · Computer Science 2020-09-10 Qurrat-Ul-Ain Nadeem , Anas Chaaban , Merouane Debbah

Beyond diagonal intelligent reflecting surface (BD-IRS) is a new promising IRS architecture for which the reflection matrix is not limited to the diagonal structure as for conventional IRS. In this paper, we study a BD-IRS aided uplink…

Information Theory · Computer Science 2025-06-25 Shuo Zheng , Shuowen Zhang

Intelligent reflecting surface (IRS) enhanced multi-unmanned aerial vehicle (UAV) non-orthogonal multiple access (NOMA) networks are investigated. A new transmission framework is proposed, where multiple UAV-mounted base stations employ…

Information Theory · Computer Science 2021-10-07 Xidong Mu , Yuanwei Liu , Li Guo , Jiaru Lin , H. Vincent Poor

Intelligent reflecting surface (IRS) are able to amend radio propagation condition tasks on account of its functional properties in phase shift optimizing. In fact, there exists geometry manifold in the base-station (BS) beamforming matrix…

Signal Processing · Electrical Eng. & Systems 2021-09-30 Liyue Zhang , Qing Wang , Haozhi Wang

This paper studies an intelligent reflecting surface (IRS)-aided downlink ultra-reliable and low-latency communication (URLLC) system, in which an IRS is dedicatedly deployed to assist a base station (BS) to send individual short-packet…

Information Theory · Computer Science 2021-05-27 Hailiang Xie , Jie Xu , Ya-Feng Liu , Liang Liu , Derrick Wing Kwan Ng

The performance of mobile edge computing (MEC) depends critically on the quality of the wireless channels. From this viewpoint, the recently advocated intelligent reflecting surface (IRS) technique that can proactively reconfigure wireless…

Information Theory · Computer Science 2021-02-10 Huilian Zhang , Xiaofan He , Qingqing Wu , Huaiyu Dai

Intelligent reflecting surfaces (IRSs) enable multiple-input multiple-output (MIMO) transmitters to modify the communication channels between the transmitters and receivers. In the presence of eavesdropping terminals, this degree of freedom…

Information Theory · Computer Science 2022-02-03 Saba Asaad , Yifei Wu , Ali Bereyhi , Ralf R. Müller , Rafael F. Schaefer , H. Vincent Poor

Intelligent reflecting surface (IRS) has recently been recognized as a promising technology to enhance the energy and spectrum efficiency of wireless networks by controlling the wireless medium with the configurable electromagnetic…

Signal Processing · Electrical Eng. & Systems 2019-07-02 Min Fu , Yong Zhou , Yuanming Shi

In this paper, intelligent reflecting surface (IRS) is introduced to enhance the network performance of cognitive radio (CR) systems. Specifically, we investigate robust beamforming design based on both bounded channel state information…

Signal Processing · Electrical Eng. & Systems 2024-01-08 Lei Zhang , Cunhua Pan , Yu Wang , Hong Ren , Kezhi Wang

In this paper, we consider the application of intelligent reflecting surface (IRS) in unmanned aerial vehicle (UAV)-based orthogonal frequency division multiple access (OFDMA) communication systems, which exploits both the significant…

Information Theory · Computer Science 2020-10-13 Zhiqiang Wei , Yuanxin Cai , Zhuo Sun , Derrick Wing Kwan Ng , Jinhong Yuan , Mingyu Zhou , Lixin Sun

Intelligent reflecting surface (IRS) is a proposing technology in 6G to enhance the performance of wireless networks by smartly reconfiguring the propagation environment with a large number of passive reflecting elements. However, current…

Information Theory · Computer Science 2020-02-17 Jinglian He , Kaiqiang Yu , Yuanming Shi