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Unmanned aerial vehicle (UAV) and reconfigurable intelligent surface (RIS) have been recently applied in the field of mobile edge computing (MEC) to improve the data exchange environment by proactively changing the wireless channels through…

Signal Processing · Electrical Eng. & Systems 2022-03-25 Zhiyuan Zhai , Xinhong Dai , Bin Duo , Xin Wang , Xiaojun Yuan

Integrated sensing and communications (ISAC) is envisioned as a key technology for future wireless communications. In this paper, we consider a downlink monostatic ISAC system wherein the base station serves multiple communications users…

Information Theory · Computer Science 2024-07-30 Tianyu Fang , Nhan Thanh Nguyen , Markku Juntti

This paper delves into an integrated sensing and communication (ISAC) system bolstered by a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS). Within this system, a base station (BS) is equipped with…

Information Theory · Computer Science 2024-11-15 Yuan Liu , Ruichen Zhang , Ruihong Jiang , Yongdong Zhu , Huimin Hu , Qiang Ni , Zesong Fei , Dusit Niyato

The recent development of integrated sensing and communications (ISAC) technology offers new opportunities to meet high-throughput and low-latency communication as well as high-resolution localization requirements in vehicular networks.…

Information Theory · Computer Science 2023-08-15 Kaitao Meng , Qingqing Wu , Wen Chen , Deshi Li

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 paper introduces a reconfigurable intelligent surface (RIS) to support parameter estimation in machine-type communications (MTC). We focus on a network where single-antenna sensors transmit spatially correlated measurements to a…

Signal Processing · Electrical Eng. & Systems 2026-01-28 Sergi Liesegang , Antonio Pascual-Iserte , Olga Muñoz

In this paper, a novel transmissive reconfigurable intelligent surface (TRIS) transceiver empowered integrated sensing and communications (ISAC) system is proposed for future multi-demand terminals. To address interference management, we…

Information Theory · Computer Science 2024-02-20 Ziwei Liu , Wen Chen , Qingqing Wu , Jinhong Yuan , Shanshan Zhang , Zhendong Li , Jun Li

Transmissive reconfigurable intelligent surfaces (RIS) represent a transformative architecture for future wireless networks, enabling a paradigm shift from traditional costly base stations to low-cost, energy-efficient transmitters. This…

Information Theory · Computer Science 2025-11-17 Zhengwei Jiang , Yufeng Zhou , Xusheng Zhu , Wen Chen , Qingqing Wu , Kai-Kit Wong

In this work, in order to achieve higher spectrum efficiency, we propose a reconfigurable intelligent surface (RIS)-assisted multi-user communication uplink system. Different from previous work in which the RIS only optimizes the phase of…

Information Theory · Computer Science 2020-11-19 Liang Yang , Fanxu Meng , Mazen O. Hasna , Ertugrul Basar

In this letter, we propose to employ reconfigurable intelligent surfaces (RISs) for enhancing the D2D underlaying system performance. We study the joint power control, receive beamforming, and passive beamforming for RIS assisted D2D…

Signal Processing · Electrical Eng. & Systems 2025-03-13 Yashuai Cao , Tiejun Lv

Reconfigurable intelligent surfaces (RISs), which can deliberately adjust the phase of incident waves, have shown enormous potentials to reconfigure the signal propagation for performance enhancement. In this paper, we investigate the…

Signal Processing · Electrical Eng. & Systems 2020-11-02 Zhengyi Zhou , Ning Ge , Wendong Liu , Zhaocheng Wang

In this paper, we investigate the integration of simultaneously transmitting and reflecting reconfigurable intelligent surfaces (STAR-RIS) with rate-splitting multiple access (RSMA) for improving physical layer security (PLS) in integrated…

Signal Processing · Electrical Eng. & Systems 2025-11-04 Thanh Nha To , Hoang Lai Pham , Quynh Nguyen Thi , Tuan Anh Pham , Le Thanh Bang

This paper investigates an uplink user equipment (UE) location and orientation estimation problem in an indoor rich-scattering environment (RSE) for a multiple-input-multiple-output (MIMO) narrowband reconfigurable intelligent surfaces…

Signal Processing · Electrical Eng. & Systems 2026-04-21 Anum Umer , Ivo Müürsepp , Muhammad Mahtab Alam

This paper considers reconfigurable intelligent surface (RIS)-aided integrated sensing and communication (ISAC) systems under dual-polarized (DP) channels. Unlike the existing ISAC systems, which ignored polarization of electromagnetic…

Information Theory · Computer Science 2025-01-03 Dongnan Xia , Cunhua Pan , Hong Ren , Zhiyuan Yu , Yasheng Jin , Jiangzhou Wang

This letter studies the problem of jointly detecting active user equipments (UEs) and estimating their location in the near field, wherein the base station (BS) is unaware of the number of active (or inactive) UEs and their positions. The…

Signal Processing · Electrical Eng. & Systems 2024-10-10 Georgios Mylonopoulos , Behrooz Makki , Stefano Buzzi , Gábor Fodor

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…

Signal Processing · Electrical Eng. & Systems 2020-05-14 Tong Bai , Cunhua Pan , Yansha Deng , Maged Elkashlan , Arumugam Nallanathan , Lajos Hanzo

This paper studies integrated sensing and communication (ISAC) technology in a full-duplex (FD) uplink communication system. As opposed to the half-duplex system, where sensing is conducted in a first-emit-then-listen manner, FD ISAC system…

Information Theory · Computer Science 2023-09-22 Yuan Guo , Yang Liu , Qingqing Wu , Xin Zeng , Qingjiang Shi

Consider a communication system in which a single antenna user equipment exchanges information with a multi-antenna base station via a reconfigurable intelligent surface (RIS) in the presence of spatially correlated channels and…

Information Theory · Computer Science 2023-12-14 Wen-Xuan Long , Marco Moretti , Andrea Abrardo , Luca Sanguinetti , Rui Chen

Reconfigurable intelligent surface (RIS) is considered as an extraordinarily promising technology to solve the blockage problem of millimeter wave (mmWave) communications owing to its capable of establishing a reconfigurable wireless…

Information Theory · Computer Science 2022-02-22 Yuqian Zhu , Ming Li , Yang Liu , Qian Liu , Zheng Chang , Yulin Hu

As a critical technology for next-generation communication networks, integrated sensing and communication (ISAC) aims to achieve the harmonious coexistence of communication and sensing. The degrees-of-freedom (DoF) of ISAC is limited due to…

Information Theory · Computer Science 2024-10-28 Yongqing Xu , Yong Li , Tony Q. S. Quek