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   Articles with "intelligent surface" as a keyword



Design of a cost-effective intelligent surface structure for field reconfiguration of an antenna

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recommendations! Published in 2024 at "International Journal of Microwave and Wireless Technologies"

DOI: 10.1017/s1759078724000953

Abstract: This work presents a passive intelligent surface designed at 2.45 GHz that has the capability of transmitting and reflecting electromagnetic waves that are incident upon it. The proposed surface does not require any circuitry or power… read more here.

Keywords: field reconfiguration; field; intelligent surface; surface ... See more keywords

GMD-Based Hybrid Beamforming for Large Reconfigurable Intelligent Surface Assisted Millimeter-Wave Massive MIMO

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recommendations! Published in 2020 at "IEEE Access"

DOI: 10.1109/access.2020.2968456

Abstract: Reconfigurable intelligent surface (RIS) is considered to be an energy-efficient approach to reshape the wireless environment for improved throughput. Its passive feature greatly reduces the energy consumption, which makes RIS a promising technique for enabling… read more here.

Keywords: reconfigurable intelligent; mimo; assisted millimeter; massive mimo ... See more keywords
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Aerial Reconfigurable Intelligent Surface-Enabled URLLC UAV Systems

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recommendations! Published in 2021 at "IEEE Access"

DOI: 10.1109/access.2021.3119268

Abstract: In this paper, we propose an aerial reconfigurable intelligent surface (RIS) system to support the stringent constraints of ultra-reliable low latency communication (URLLC). Specifically, unmanned aerial vehicles (UAVs) employed onboard RIS panels can act as… read more here.

Keywords: intelligent surface; reconfigurable intelligent; enabled urllc; surface enabled ... See more keywords

Reconfigurable Intelligent Surface-Assisted HAPS Relaying Communication Networks for Multiusers Under AF Protocol: A Performance Analysis

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recommendations! Published in 2022 at "IEEE Access"

DOI: 10.1109/access.2022.3146885

Abstract: This research paper studies the performance analysis of a reconfigurable intelligent surface (RIS)-assisted high altitude platform station (HAPS) relaying communication network for multiple ground users. Owing to transmission blockage between the source and the destination,… read more here.

Keywords: system; intelligent surface; haps relaying; reconfigurable intelligent ... See more keywords
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Reconfigurable Intelligent Surface-Aided Orthogonal Time Frequency Space and Its Deep Learning-Based Signal Detection

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recommendations! Published in 2023 at "IEEE Access"

DOI: 10.1109/access.2023.3273297

Abstract: Orthogonal time frequency space (OTFS) has emerged as a promising modulation for next-generation wireless systems. This two-dimensional (2D) modulation has the inherent capability of providing uninterrupted connectivity and improved performance in a high-mobility doubly-selective channel… read more here.

Keywords: time frequency; intelligent surface; frequency space; orthogonal time ... See more keywords

Capacity Optimization of Large Intelligent Surface With Hardware Impairment Based on Meta-Deep Learning

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recommendations! Published in 2024 at "IEEE Access"

DOI: 10.1109/access.2024.3401454

Abstract: This work proposes a sub-optimal method based on a two-layer structured meta-deep reinforcement learning (MDRL) approach to address the hardware impairment (HWI) optimization issue in large intelligent surface (LIS) systems. This method, designed for distributed… read more here.

Keywords: large intelligent; meta deep; lis; optimization ... See more keywords

Secrecy Rate Maximization for Active Reconfigurable Intelligent Surface Assisted MIMO Systems

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recommendations! Published in 2024 at "IEEE Access"

DOI: 10.1109/access.2024.3416553

Abstract: Reconfigurable intelligent surface (RIS) is a promising technology for future 6G communications and has been used to enhance secrecy performance. However, the performance improvement is restricted by the “double fading” effect of the reflection channel… read more here.

Keywords: method; rate; intelligent surface; reconfigurable intelligent ... See more keywords

Distributed Active-Passive Reconfigurable Intelligent Surface Assisted MISO Secure Communications

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recommendations! Published in 2024 at "IEEE Access"

DOI: 10.1109/access.2024.3425601

Abstract: This paper addresses the secure communication problem in a distributed active-passive reconfigurable intelligent surface (RIS) assisted multiple-input single-output (MISO) scenario with a single-antenna malicious eavesdropper. The objective is to maximize the secrecy rate of the… read more here.

Keywords: passive reconfigurable; intelligent surface; reconfigurable intelligent; distributed active ... See more keywords

Differentially Private Federated Learning via Reconfigurable Intelligent Surface

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recommendations! Published in 2022 at "IEEE Internet of Things Journal"

DOI: 10.1109/jiot.2022.3168066

Abstract: Federated learning (FL), as a disruptive machine learning (ML) paradigm, enables the collaborative training of a global model over decentralized local data sets without sharing them. It spans a wide scope of applications from the… read more here.

Keywords: intelligent surface; federated learning; differentially private; private federated ... See more keywords

Unsupervised Deep-Learning-Based Reconfigurable Intelligent Surface-Aided Broadcasting Communications in Industrial IoTs

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recommendations! Published in 2022 at "IEEE Internet of Things Journal"

DOI: 10.1109/jiot.2022.3169276

Abstract: This article presents a general system framework that lays the foundation for reconfigurable intelligent surface (RIS)-enhanced broadcast communications in Industrial Internet of Things (IIoTs). In our system model, we consider multiple sensor clusters co-existing in… read more here.

Keywords: unsupervised deep; intelligent surface; reconfigurable intelligent; deep learning ... See more keywords

The Reconfigurable Intelligent Surface-Aided Multi-Node IoT Downlink: Beamforming Design and Performance Analysis

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recommendations! Published in 2023 at "IEEE Internet of Things Journal"

DOI: 10.1109/jiot.2022.3225127

Abstract: Reconfigurable intelligent surfaces (RISs) are capable of enhancing the wireless propagation environment of the future Internet of Things (IoT). Recently, they have also been configured as a transmitter to realize information modulation at low hardware… read more here.

Keywords: intelligent surface; analysis; reconfigurable intelligent; surface aided ... See more keywords