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Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)-aided cell-free massive multiple-input multiple-output (CF-mMIMO) systems are investigated under spatially correlated fading channels using realistic…

信息论 · 计算机科学 2025-01-06 Zeping Sui , Hien Quoc Ngo , Michail Matthaiou , Lajos Hanzo

The sum-rate performance of simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted full-duplex (FD) communication systems is investigated. The reflection and transmission coefficients of STAR-RIS…

The unmanned aerial vehicle (UAV) enabled mobile edge computing (MEC) has been deemed a promising paradigm to provide ubiquitous communication and computing services for the Internet of Things (IoT). Besides, by intelligently reflecting the…

系统与控制 · 电气工程与系统科学 2022-08-31 Xintong Qin , Zhengyu Song , Tianwei Hou , Wenjuan Yu , Jun Wang , Xin Sun

The reconfigurable intelligent surface (RIS), which consists of a large number of passive and low-cost reflecting elements, has been recognized as a revolutionary technology to enhance the performance of future wireless networks. This paper…

信号处理 · 电气工程与系统科学 2021-05-25 Linsong Du , Shihai Shao Gang Yang , Jianhui Ma , Qinpeng Liang , Youxi Tang

This paper investigates a wireless-powered hybrid reflecting intelligent surface (hybrid RIS)-assisted multiple access system, where the RIS can harvest energy from energy station (ES) transmitted radio frequency signal (RF), and each…

信号处理 · 电气工程与系统科学 2024-02-20 Mingang Yuan , Wenzhe Zhang , Gaofei Huang

Simultaneously transmitting (refracting) and reflecting reconfigurable intelligent surfaces (STAR-RISs) have been recently identified to improve the spectrum/energy efficiency and extend the communication range. However, their potential for…

信号处理 · 电气工程与系统科学 2022-07-20 Jiguang He , Aymen Fakhreddine , George C. Alexandropoulos

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…

信号处理 · 电气工程与系统科学 2022-06-28 Qiling Gao , Yuanwei Liu , Xidong Mu , Min Jia , Dongbo Li , Lajos Hanzo

Reconfigurable intelligent surface (RIS), a recently introduced technology for future wireless com-munication systems, enhances the spectral and energy efficiency by intelligently adjusting the propaga-tion conditions between a base station…

信号处理 · 电气工程与系统科学 2022-03-08 Huimei Han , Jun Zhao , Zehui Xiong , Dusit Niyato , Wenchao Zhai , Marco Di Renzo , Quoc-Viet Pham , Weidang Lu

In contrast to conventional reconfigurable intelligent surface (RIS), simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) has been proposed recently to enlarge the serving area from 180o to 360o coverage.…

信息论 · 计算机科学 2024-01-02 Abdelhamid Salem , Kai-Kit Wong , Chan-Byoung Chae , Yangyang Zhang

The opening of the millimeter wave (mmWave) spectrum bands for 5G communications has motivated the need for novel spectrum sharing solutions at these high frequencies. In fact, reconfigurable intelligent surfaces (RISs) have recently…

信息论 · 计算机科学 2023-01-26 Omar Hashash , Walid Saad , Mohammadreza F. Imani , David R. Smith

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…

信息论 · 计算机科学 2024-04-16 Kangchun Zhao , Yijie Mao , Yuanming Shi

This study investigates the application of a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)-aided medium-Earth-orbit (MEO) satellite network for providing both global positioning services and…

信息论 · 计算机科学 2026-05-27 Tianwei Hou , Da Guan , Xin Sun , Anna Li , Wenqiang Yi , Yuanwei Liu , Arumugam Nallanathan

This paper considers a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)-aided cell-free massive multiple-input multiple-output (CF-mMIMO) system, accounting for imperfect hardware in spatially…

信息论 · 计算机科学 2024-08-27 Zeping Sui , Hien Quoc Ngo , Michail Matthaiou

This paper proposes a robust resource allocation framework for a low Earth orbit (LEO) satellite-enabled simultaneous wireless information and power transfer (SWIPT) system, assisted by a ground-deployed simultaneously transmitting and…

信号处理 · 电气工程与系统科学 2025-09-03 Zahra Rostamikafaki , Francois Chan , Claude D'Amours

We consider computation offloading for edge computing in a wireless network equipped with intelligent reflecting surfaces (IRSs). IRS is an emerging technology and has recently received great attention since they can improve the wireless…

信号处理 · 电气工程与系统科学 2020-01-29 Yang Liu , Jun Zhao , Zehui Xiong , Dusit Niyato , Chau Yuen , Cunhua Pan , Binbin Huang

Reconfigurable intelligent surfaces (RISs) can be densely deployed in the environment to create multi-reflection line-of-sight (LoS) links for signal coverage enhancement. However, conventional reflection-only RISs can only achieve…

信号处理 · 电气工程与系统科学 2025-05-21 Bonan An , Weidong Mei , Yuanwei Liu , Dong Wang , Zhi Chen

A point-to-point movable element (ME) enabled reconfigurable intelligent surface (ME-RIS) communication system is investigated, where each element position can be flexibly adjusted to create favorable channel conditions. For maximizing the…

信号处理 · 电气工程与系统科学 2025-03-20 Jingjing Zhao , Qingyi Huang , Kaiquan Cai , Quan Zhou , Xidong Mu , Yuanwei Liu

Computation off-loading in mobile edge computing (MEC) systems constitutes an efficient paradigm of supporting resource-intensive applications on mobile devices. However, the benefit of MEC cannot be fully exploited, when the communications…

信号处理 · 电气工程与系统科学 2020-05-14 Tong Bai , Cunhua Pan , Yansha Deng , Maged Elkashlan , Arumugam Nallanathan , Lajos Hanzo

This paper proposes a general optimization framework to improve the spectral and energy efficiency (EE) of ultra-reliable low-latency communication (URLLC) simultaneous-transfer-and-receive (STAR) reconfigurable intelligent surface…

信息论 · 计算机科学 2023-07-11 Mohammad Soleymani , Ignacio Santamaria , Eduard Jorswieck

Simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) have emerged as a promising technology for enabling full-space signal manipulation and enhancing wireless network coverage and capacity. In this…

信号处理 · 电气工程与系统科学 2025-12-15 Taissir Y. Elganimi , Mahmoud Aldababsa , Ali A. Nasir , Khaled M. Rabie