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This paper proposes a quality-of-service (QoS)-aware multi-user communication framework facilitated by multiple simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs). The user groups are established…

Systems and Control · Electrical Eng. & Systems 2025-08-26 Junfeng Wang , Xiao Tang , Jinxin Liu , Zhi Zhai , Qinghe Du , Naijin Liu

Benefiting from its capability to generalize existing reconfigurable intelligent surface (RIS) architectures and provide additional design flexibility via interactions between RIS elements, beyond-diagonal RIS (BD-RIS) has attracted…

Signal Processing · Electrical Eng. & Systems 2025-01-20 Xiaohua Zhou , Tianyu Fang , Yijie Mao

Reconfigurable holographic surfaces (RHS) are intrinsically amalgamated with reconfigurable intelligent surfaces (RIS), for beneficially ameliorating the signal propagation environment. This potent architecture significantly improves the…

Signal Processing · Electrical Eng. & Systems 2024-10-22 Pavan Kumar Gadamsetty , K. V. S. Hari , Lajos Hanzo

While low-altitude wireless networks (LAWNs) based on uncrewed aerial vehicles (UAVs) offer high mobility, flexibility, and coverage for urban communications, they face severe signal attenuation in dense environments due to obstructions. To…

Networking and Internet Architecture · Computer Science 2025-10-28 Xinyue Liang , Hui Kang , Junwei Che , Jiahui Li , Geng Sun , Qingqing Wu , Jiacheng Wang , Dusit Niyato

In this paper, simultaneously transmitting and reflecting (STAR) reconfigurable intelligent surface (RIS) is investigated in the multi-user mobile edge computing (MEC) system to improve the computation rate. Compared with traditional…

Information Theory · Computer Science 2023-05-02 Zhenrong Liu , Zongze Li , Miaowen Wen , Yi Gong , Yik-Chung Wu

In this paper, we consider an active reconfigurable intelligent surface (RIS) to assist the multiuser downlink transmission in the presence of practical hardware impairments (HWIs), including the HWIs at the transceivers and the phase noise…

Signal Processing · Electrical Eng. & Systems 2024-02-19 Zhangjie Peng , Zhibo Zhang , Cunhua Pan , Marco Di Renzo , Octavia A. Dobre , Jiangzhou Wang

This study explores the synergy between rate-splitting multiple access (RSMA) and simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) as a unified framework to enable ubiquitous, intelligent, and resilient…

Signal Processing · Electrical Eng. & Systems 2025-10-21 Muhammad Asif , Asim Ihsan , Zhu Shoujin , Ali Ranjha , Xingwang Li , Khaled M. Rabie , Symeon Chatzinotas

Reconfigurable intelligent surfaces (RISs) have attracted enormous interest thanks to their ability to overcome line-of-sight blockages in mmWave systems, enabling in turn accurate localization with minimal infrastructure. Less investigated…

Signal Processing · Electrical Eng. & Systems 2022-09-14 Alessio Fascista , Musa Furkan Keskin , Angelo Coluccia , Henk Wymeersch , Gonzalo Seco-Granados

This paper investigates the problem of resource allocation for multiuser communication networks with a reconfigurable intelligent surface (RIS)-assisted wireless transmitter. In this network, the sum transmit power of the network is…

Signal Processing · Electrical Eng. & Systems 2020-09-25 Zhaohui Yang , Wei Xu , Chongwen Huang , Jianfeng Shi , Mohammad Shikh-Bahaei

Reconfigurable intelligent surface (RIS) has drawn considerable attention from the research society recently, which creates favorable propagation conditions by controlling the phase shifts of the reflected waves at the surface, thereby…

Information Theory · Computer Science 2019-11-01 Boya Di , Hongliang Zhang , Lingyang Song , Yonghui Li , Zhu Han , H. Vincent Poor

This work studies the effectiveness of a novel simultaneous transmission and reflection reconfigurable intelligent surface (STAR-RIS) aided Full-Duplex (FD) communication system. We aim to maximize the energy efficiency by jointly…

Signal Processing · Electrical Eng. & Systems 2022-04-18 Pengxin Guan , Yiru Wang , Hongkang Yu , Yuping Zhao

This paper investigates a reconfigurable intelligent surface (RIS)-aided multi-user multiple-input multiple-output (MIMO) system by considering only the statistical channel state information (CSI) at the base station (BS). We aim to…

Information Theory · Computer Science 2021-12-23 Huan Zhang , Shaodan Ma , Zheng Shi , Xin Zhao , Guanghua Yang

The development of sixth-generation (6G) communication technologies is confronted with the significant challenge of spectrum resource shortage. To alleviate this issue, we propose a novel simultaneously transmitting and reflecting…

Signal Processing · Electrical Eng. & Systems 2024-12-03 Haochen Li , Yuanwei Liu , Xidong Mu , Yue Chen , Zhiwen Pan , Xiaohu You

A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided integrated sensing, computing, and communication (ISCC) Internet of Robotic Things (IoRT) framework is proposed. Specifically, the full-duplex…

Signal Processing · Electrical Eng. & Systems 2024-12-03 Haochen Li , Xidong Mu , Yuanwei Liu , Yue Chen , Pan Zhiwen

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 paper, we investigate an active simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted integrated sensing and communications (ISAC) system, where the dual-function base station (DFBS)…

Information Theory · Computer Science 2024-11-15 Shuang Zhang , Wanming Hao , Gangcan Sun , Chongwen Huang , Zhengyu Zhu , Xingwang Li , Chau Yuen

The performance of over-the-air computation (AirComp) systems degrades due to the hostile channel conditions of wireless devices (WDs), which can be significantly improved by the employment of reconfigurable intelligent surfaces (RISs).…

Signal Processing · Electrical Eng. & Systems 2023-01-06 Xiongfei Zhai , Guojun Han , Yunlong Cai , Yuanwei Liu , Lajos Hanzo

The recent research in the emerging technology of reconfigurable intelligent surfaces (RISs) has identified its high potential for localization and sensing. However, to accurately localize a user placed in the area of influence of an RIS,…

Signal Processing · Electrical Eng. & Systems 2022-10-20 Reza Ghazalian , Hui Chen , George C. Alexandropoulos , Gonzalo Seco-Granados , Henk Wymeersch , Riku Jäntti

Well-designed simultaneously transmitting and reflecting RIS (STAR-RIS), which extends the half-space coverage to full-space coverage, incurs wireless communication environments to be smart and reconfigurable. In this paper, we survey how…

Information Theory · Computer Science 2022-10-18 Mohammad Reza Kavianinia , Mohammad Javad Emadi

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