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Holographic Multiple Input Multiple Output (HMIMO), which integrates massive antenna elements into a compact space to achieve a spatially continuous aperture, plays an important role in future wireless networks. With numerous antenna…

Information Theory · Computer Science 2022-07-07 Shuhao Zeng , Hongliang Zhang , Boya Di , Haichao Qin , Xin Su , Lingyang Song

Unlike previous works that focused solely on passive intelligent reflecting surface (PIRS) or active IRS (AIRS), a novel joint AIRS and PIRS architecture has been developed to flexibly utilize their combined advantages in mitigating…

Information Theory · Computer Science 2025-01-22 Chaoying Huang , Wen Chen , Qingqing Wu , Nan Cheng

Intelligent reflecting surface (IRS) is a promising technology to extend the wireless signal coverage and support the high performance communication. By intelligently adjusting the reflection coefficients of a large number of passive…

Information Theory · Computer Science 2021-03-01 Yitao Han , Shuowen Zhang , Lingjie Duan , Rui Zhang

Intelligent reflecting surface (IRS) is a new promising technology that is able to manipulate the wireless propagation channel via smart and controllable signal reflection. In this paper, we investigate the capacity region of a multiple…

Information Theory · Computer Science 2020-02-18 Shuowen Zhang , Rui Zhang

This paper proposes a novel dual-intelligent reflecting surface (IRS) aided interference-limited simultaneous wireless information and power transfer (SWIPT) system with independent power splitting (PS), where each receiving antenna applies…

Signal Processing · Electrical Eng. & Systems 2026-01-01 Chaoying Huang , Wen Chen , Qingqing Wu , Xusheng Zhu , Zhendong Li , Ying Wang , Jinhong Yuan

In this work, we unveil the advantages of synergizing cooperative rate splitting (CRS) with user relaying and simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR RIS). Specifically, we propose a novel STAR…

Information Theory · Computer Science 2024-04-16 Kangchun Zhao , Yijie Mao , Yuanming Shi

The 6th generation of wireless communication (6G) is envisioned to give rise to various technologies for improving the end-to-end communication performance, where the communication is envisioned to utilize wireless signals in the millimeter…

Networking and Internet Architecture · Computer Science 2022-07-15 Maria Bustamante Madrid , Jeroen Famaey , Filip Lemic

Rate-splitting multiple access (RSMA) has recently appeared as a powerful technique for improving the downlink performance of multiple-input multiple-output (MIMO) systems. By flexibly managing interference, RSMA can deliver high spectral…

Signal Processing · Electrical Eng. & Systems 2022-05-25 Arthur S. de Sena , Pedro H. J. Nardelli , Daniel B. da Costa , Petar Popovski , Constantinos B. Papadias

Intelligent reflecting surface (IRS) has emerged as a promising technology to realize smart radio environment for future wireless communication systems. Existing works in this line of research have mainly considered the conventional passive…

Information Theory · Computer Science 2023-06-27 Zhenyu Kang , Changsheng You , Rui Zhang

Intelligent reflecting surface (IRS) has emerged as a promising and revolutionizing technology for future wireless networks. Most existing IRS studies focus on simple cooperative systems which usually have a single frequency band. In…

Signal Processing · Electrical Eng. & Systems 2022-09-02 Wenhao Cai , Ming Li , Qian Liu

Intelligent reflecting surface (IRS) is a cost-effective solution for achieving high spectrum and energy efficiency in future wireless networks by leveraging massive low-cost passive elements that are able to reflect the signals with…

Information Theory · Computer Science 2020-01-03 Qingqing Wu , Rui Zhang

This paper investigates the sensing performance of two intelligent reflecting surface (IRS)-enabled non-line-of-sight (NLoS) sensing systems with fully-passive and semi-passive IRSs, respectively. In particular, we consider a fundamental…

Signal Processing · Electrical Eng. & Systems 2023-11-13 Xianxin Song , Xinmin Li , Xiaoqi Qin , Jie Xu , Tony Xiao Han , Derrick Wing Kwan Ng

This paper investigates the information-theoretic energy efficiency of intelligent reflecting surface (IRS)-aided wireless communication systems, taking into account the statistical quality-of-service (QoS) constraints on delay violation…

Information Theory · Computer Science 2024-11-04 Wenhao Wang , Deli Qiao , Lei Yang , Yueying Zhan , Derrick Wing Kwan Ng

In cognitive radio (CR) communication systems, achieving high secondary user (SU) rate in the presence of strong cross-link interference with the primary user (PU) is challenging. In this letter, we exploit the emerging intelligent…

Information Theory · Computer Science 2020-03-10 Xinrong Guan , Qingqing Wu , Rui Zhang

High-speed communication and accurate sensing are of vital importance for future transportation system. Integrated sensing and communication (ISAC) system has the advantages of high spectrum efficiency and low hardware cost, satisfying the…

Signal Processing · Electrical Eng. & Systems 2022-11-21 Zhiqing Wei , Xinyi Yang , Chunwei Meng , Xiaoyu Yang , Kaifeng Han , Chen Qiu , Huici Wu

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…

Information Theory · Computer Science 2025-10-30 Chi Qiu , Wen Chen , Qingqing Wu , Fen Hou , Wanming Hao , Ruiqi Liu , Derrick Wing Kwan Ng

This paper investigates a multiuser downlink communication system with coexisting intelligent reflecting surface (IRS) and classical half-duplex decode-and-forward (DF) relay. In this system, the IRS and the DF relay interact with each…

Information Theory · Computer Science 2021-09-21 Te-Yi Kan , Ronald Y. Chang , Feng-Tsun Chien

Intelligent reflective surfaces (IRSs) capable of reconfiguring their electromagnetic absorption and reflection properties in real-time are offering unprecedented opportunities to enhance wireless communication experience in challenging…

Networking and Internet Architecture · Computer Science 2020-02-03 Dong Ma , Ming Ding , Mahbub Hassan

Vehicular communication is an important application of the fifth generation of mobile communication systems (5G). Due to its low cost and energy efficiency, intelligent reflecting surface (IRS) has been envisioned as a promising technique…

Signal Processing · Electrical Eng. & Systems 2020-04-21 Jue Wang , Wence Zhang , Xu Bao , Tiecheng Song , Cunhua Pan

Intelligent reflecting surface (IRS) is a potential candidate for massive multiple-input multiple-output (MIMO) 2.0 technology due to its low cost, ease of deployment, energy efficiency and extended coverage. This chapter investigates the…

Signal Processing · Electrical Eng. & Systems 2026-02-24 Yashuai Cao , Hetong Wang , Tiejun Lv , Wei Ni
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