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Simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) have emerged as a promising technology for achieving full-space coverage. Prior works on STAR-RISs mostly assumed the full and instantaneous channel…

Information Theory · Computer Science 2022-07-05 Chenyu Wu , Changsheng You , Yuanwei Liu , Shuo Shi , Marco Di Renzo

Terahertz (THz) communications have been envisioned as a promising enabler to provide ultra-high data transmission for sixth generation (6G) wireless networks. To tackle the blockage vulnerability brought by severe path attenuation and poor…

Information Theory · Computer Science 2021-10-14 Xinying Ma , Zhi Chen , Longfei Yan , Chong Han , Qiye Wen

Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted non-orthogonal multiple access (NOMA) communication systems are investigated in its vicinity, where a STAR-RIS is deployed within a predefined…

Signal Processing · Electrical Eng. & Systems 2022-06-28 Qiling Gao , Yuanwei Liu , Xidong Mu , Min Jia , Dongbo Li , Lajos Hanzo

We consider reconfigurable intelligent surface (RIS) aided sixth-generation (6G) terahertz (THz) communications for indoor environment in which a base station (BS) wishes to send independent messages to its serving users with the help of…

Information Theory · Computer Science 2023-03-22 Najam Us Saqib , Shumei Hou , Sung Ho Chae , Sang-Woon Jeon

The emergence of reconfigurable intelligent surfaces (RISs) enables us to establish programmable radio wave propagation that caters for wireless communications, via employing low-cost passive reflecting units. This work studies the…

Information Theory · Computer Science 2021-03-08 Li You , Jiayuan Xiong , Derrick Wing Kwan Ng , Chau Yuen , Wenjin Wang , Xiqi Gao

Terahertz (THz) simultaneous wireless information and power transfer (SWIPT) is a promising technology for enabling ultra-high-rate and low-latency communications in massive battery-free Internet of Things (IoT) deployments for 6G networks.…

Signal Processing · Electrical Eng. & Systems 2025-11-03 Jiayuan Wei , Qingwei Jiang , Wen Fang , Mingqing Liu , Qingwen Liu , Wen Chen , Qingqing Wu

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

In this paper, we propose simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted non-orthogonal multiple access (NOMA) networks. The considered STAR-RIS utilizes the mode switching (MS) protocol to…

Information Theory · Computer Science 2023-09-20 Mahmoud Aldababsa , Aymen Khaleel , Ertugrul Basar

This paper investigates the multi-antenna covert communications assisted by a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS). In particular, to shelter the existence of communications between…

Information Theory · Computer Science 2023-08-31 Han Xiao , Xiaoyan Hu , Pengcheng Mu , Wenjie Wang , Tong-Xing Zheng , Kai-Kit Wong , Kun Yang

Reconfigurable intelligent surfaces (RISs) have emerged as a promising technology in wireless communications. Simultaneously transmitting and reflecting RIS (STAR-RISs) in particular have garnered significant attention due to their dual…

Information Theory · Computer Science 2024-07-23 Chong Huang , Yun Wen , Long Zhang , Gaojie Chen , Zhen Gao , Pei Xiao

A simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided communication system is investigated. A robust joint beamforming design problem under the imperfect channel state information (CSI) is…

Signal Processing · Electrical Eng. & Systems 2025-01-13 Haochen Li , Xidong Mu , Yuanwei Liu , Yue Chen , Pan Zhiwen

This paper explores an integrated sensing and communication (ISAC) network empowered by multiple active simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs). A base station (BS) furnishes downlink…

Signal Processing · Electrical Eng. & Systems 2025-07-25 Hyeonho Noh , Hyeonsu Lyu , Hyun Jong Yang

A simultaneously transmitting and reflecting surface (STARS) assisted near-field (NF) integrated sensing and communication (ISAC) framework is proposed, where the radio sensors are installed on the STARS to directly conduct the…

Signal Processing · Electrical Eng. & Systems 2025-06-03 Na Xue , Xidong Mu , Yue Chen , Yuanwei Liu

Terahertz (THz) communication is envisioned as a key technology for 6G and beyond wireless systems owing to its multi-GHz bandwidth. To maintain the same aperture area and the same link budget as the lower frequencies, ultra-massive…

Information Theory · Computer Science 2024-11-25 Wenqi Zhao , Chong Han , Ho-Jin Song , Emil Björnson

Terahertz (THz) and intelligent reflecting surface (IRS) have been regarded as two promising technologies to improve the capacity and coverage for future 6G networks. Generally, IRS is usually equipped with large-scale elements when…

Information Theory · Computer Science 2022-08-29 Wanming Hao , Xiaobei You , Fuhui Zhou , Zheng Chu , Gangcan Sun , Pei Xiao

The sixth generation (6G) wireless networks aim to achieve ultra-high data transmission rates, very low latency and enhanced energy-efficiency. To this end, terahertz (THz) band is one of the key enablers of 6G to meet such requirements.…

Signal Processing · Electrical Eng. & Systems 2024-10-07 Ahmet M. Elbir , Kumar Vijay Mishra , Symeon Chatzinotas , Mehdi Bennis

Besides improving communication performance, intelligent reflecting surfaces (IRSs) are also promising enablers for achieving larger sensing coverage and enhanced sensing quality. Nevertheless, in the absence of a direct path between the…

Information Theory · Computer Science 2022-11-08 Kaitao Meng , Qingqing Wu , Robert Schober , Wen Chen

A correlated transmission and reflection (T&R) phase-shift model is proposed for passive lossless simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs). A STAR-RIS-aided two-user downlink communication…

Information Theory · Computer Science 2022-09-14 Jiaqi Xu , Yuanwei Liu , Xidong Mu , Robert Schober , H. Vincent Poor

Unmanned aerial vehicles (UAVs) are envisioned to be extensively employed for assisting wireless communications in Internet of Things (IoT) applications. On the other hand, terahertz (THz) enabled intelligent reflecting surface (IRS) is…

Information Theory · Computer Science 2022-04-04 Milad Tatar Mamaghani , Yi Hong

Intelligent reflecting surface (IRS) has emerged as a cost-effective solution to enhance wireless communication performance via passive signal reflection. Existing works on IRS have mainly focused on investigating IRS's passive…

Information Theory · Computer Science 2022-07-19 Beixiong Zheng , Rui Zhang