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This paper proposes a novel relay-aided intelligent reconfigurable surface (IRS) architecture for future wireless communication systems. The proposed architecture, which consists of two side-by-side intelligent surfaces connected via a…

信息论 · 计算机科学 2020-06-12 Xiaoyan Ying , Umut Demirhan , Ahmed Alkhateeb

Reconfigurable intelligent surface (RIS) has been explored as a supportive technology for wireless communication since around 2019. While the literature highlights the potential of RIS in different modern applications, two key issues have…

When offloading links encounter deep fading and obstruction, edge caching cannot fully enhance wireless network performance and improve the QoS of edge nodes, as it fails to effectively reduce backhaul burden. The emerging technology of…

信号处理 · 电气工程与系统科学 2024-10-15 Meng Gao , Yang Wang , Huafu Li , Junqi Guo

This paper presents a novel approach for the joint design of a reconfigurable intelligent surface (RIS) and a transmitter-receiver pair that are trained together as a set of deep neural networks (DNNs) to optimize the end-to-end…

网络与互联网体系结构 · 计算机科学 2021-12-09 Tugba Erpek , Yalin E. Sagduyu , Ahmed Alkhateeb , Aylin Yener

Integrating intelligent reflecting surface (IRS) and Rate-Splitting Multiple Access (RSMA) is an effective solution to improve the spectral/energy efficiency in next-generation (beyond 5G (B5G) and 6G) wireless networks. In this paper, we…

信号处理 · 电气工程与系统科学 2021-06-09 Aditya Jolly , Sudip Biswas , Keshav Singh

This paper considers intelligent reflecting surface (IRS)-aided simultaneous wireless information and power transfer (SWIPT) in a multi-user multiple-input single-output (MISO) interference channel (IFC), where multiple transmitters (Txs)…

信息论 · 计算机科学 2024-01-31 Ying Gao , Qingqing Wu , Wen Chen , Celimuge Wu , Derrick Wing Kwan Ng , Naofal Al-Dhahir

This paper studies an intelligent reflecting surface (IRS)-assisted multiuser multiple-input single-output (MISO) simultaneous wireless information and power transfer (SWIPT) system. In this system, a multi-antenna access point (AP) uses…

信号处理 · 电气工程与系统科学 2019-10-17 Yizheng Tang , Ganggang Ma , Hailiang Xie , Jie Xu , Xiao Han

Most algorithms developed so far for the optimization of Intelligent Reflecting Surfaces (IRSs) require knowledge of full Channel State Information (CSI). However, the resulting acquisition overhead constitutes a major bottleneck for the…

网络与互联网体系结构 · 计算机科学 2021-12-20 Vahid Jamali , George C. Alexandropoulos , Robert Schober , H. Vincent Poor

In this paper, intelligent reflecting surfaces (IRSs) are employed to enhance the physical layer security in a challenging radio environment. In particular, a multi-antenna access point (AP) has to serve multiple single-antenna legitimate…

信息论 · 计算机科学 2020-04-21 Xianghao Yu , Dongfang Xu , Ying Sun , Derrick Wing Kwan Ng , Robert Schober

Recently, as explosive growth of mobile data traffic, the performance of wireless communication systems requires to be enhanced significantly in future. Intelligent reflecting surface (IRS) can be used as a promising way to improve the…

信息论 · 计算机科学 2020-04-22 Yiming Liu , Erwu Liu , Rui Wang

New reconfigurable intelligent surface (RIS) based amplitude and phase modulation schemes are proposed as an evolution how the phase-only modulation schemes available in the literature. Explicitly, both the amplitude-phase shift keying…

Intelligent Reflecting Surface (IRS) has been recently proposed as a promising solution to enhance the spectral and energy efficiency of future wireless networks by tuning a massive number of low-cost passive reflecting elements and thereby…

信息论 · 计算机科学 2020-02-27 Jiangbin Lyu , Rui Zhang

The increasing demand for reliable connectivity in industrial environments necessitates effective spectrum utilization strategies, especially in the context of shared spectrum bands. However, the dynamic spectrum-sharing mechanisms often…

系统与控制 · 电气工程与系统科学 2025-04-03 Sicheng Liu , Qun Wang , Zhuwei Qin , Weishan Zhang , Jingyi Wang , Xiang Ma

Reconfigurable Intelligent Surface (RIS) is a promising solution to reconfigure the wireless environment in a controllable way. To compensate for the double-fading attenuation in the RIS-aided link, a large number of passive reflecting…

信息论 · 计算机科学 2021-03-02 Ruizhe Long , Ying-Chang Liang , Yiyang Pei , Erik G. Larsson

In this paper, we investigate an intelligent reflecting surface (IRS) assisted cell-free multiple input multiple output (MIMO) communication system, where distributed multiple IRSs are dedicated deployed to assist distributed multiple base…

信息论 · 计算机科学 2021-08-18 Xie Xie , Chen He , Xiaoya Li , Kun Yang , Z. Jane Wang

Integrated sensing and communications (ISAC) is a spectrum-sharing paradigm that allows different users to jointly utilize and access the crowded electromagnetic spectrum. In this context, intelligent reflecting surfaces (IRSs) have lately…

信息论 · 计算机科学 2023-08-31 Zahra Esmaeilbeig , Arian Eamaz , Kumar Vijay Mishra , Mojtaba Soltanalian

The concept of reconfigurable intelligent surface (RIS)-assisted transmission, where phases of reflected signals are adjusted in an effective arrangement, has been recently put forward as a promising solution for 6G and beyond networks.…

信号处理 · 电气工程与系统科学 2024-10-30 Ayse E. Canbilen , Ertugrul Basar , Salama S. Ikki

Reconfigurable intelligent surface (RIS) technology is a promising solution to improve the performance of existing wireless communications. To achieve its cost-effectiveness advantage, there inevitably exist certain hardware impairments in…

信号处理 · 电气工程与系统科学 2024-01-17 Yiming Liu , Rui Wang , Zhu Han

We design the phase shifts of an intelligent reflecting surface (IRS)-assisted single-input-multiple-output communication system to minimize the outage probability (OP) and to maximize the ergodic rate. Our phase shifts design uses only…

信息论 · 计算机科学 2022-11-08 Shashank Shekhar , Athira Subhash , Tejesh Kella , Sheetal Kalyani

In this letter, we study the secure communication problem in the unmanned aerial vehicle (UAV) enabled networks aided by an intelligent reflecting surface (IRS) from the physical-layer security perspective. Specifically, the IRS is deployed…

信息论 · 计算机科学 2020-11-10 Wen Wang , Hui Tian , Wanli Ni , Meihui Hua
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