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   Articles with "active ris" as a keyword



Optimal Operation of Active RIS-Aided Wireless Powered Communications in IoT Networks

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recommendations! Published in 2024 at "IEEE Internet of Things Journal"

DOI: 10.1109/jiot.2024.3461814

Abstract: Wireless-powered communications (WPCs) are increasingly crucial for extending the lifespan of low-power Internet of Things (IoT) devices. Furthermore, reconfigurable intelligent surfaces (RISs) can create favorable electromagnetic environments by providing alternative signal paths to counteract blockages.… read more here.

Keywords: wireless powered; powered communications; ris aided; active ris ... See more keywords

Active RIS Versus Passive RIS: Which Is Superior with the Same Power Budget?

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recommendations! Published in 2022 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2022.3159525

Abstract: This letter theoretically compares the active reconfigurable intelligent surface (RIS)-aided system with the passive RIS-aided system. For fair comparison, we consider that these two systems have the same overall power budget that can be used… read more here.

Keywords: active ris; passive ris; ris; power ... See more keywords

Secure Transmission for Active RIS-Assisted THz ISAC Systems With Delay Alignment Modulation

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recommendations! Published in 2024 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2024.3368532

Abstract: In this letter, we study the secure transmission problem in the active reconfigurable intelligent surfaces (RIS)-assisted terahertz integrated sensing and communication system, where the delay alignment modulation technique is applied at the base station (BS).… read more here.

Keywords: alignment modulation; active ris; secure transmission; ris assisted ... See more keywords

Active RIS-Assisted Communication Systems With Discrete Phase Shifts

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recommendations! Published in 2025 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2025.3538932

Abstract: Reconfigurable intelligent surface (RIS) has made significant contributions to enhancing wireless coverage via the effective management of scattering radio environment. This letter centers on an active RIS-assisted communication system over Nakagami-m fading channels where the… read more here.

Keywords: discrete phase; active ris; phase shifts; assisted communication ... See more keywords

RIS-Assisted Green Secure Communications: Active RIS or Passive RIS?

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recommendations! Published in 2022 at "IEEE Wireless Communications Letters"

DOI: 10.1109/lwc.2022.3221609

Abstract: Reconfigurable Intelligent Surface (RIS) is one of the promising techniques for 6G wireless communications, and recently has also been shown to be able to improve secure communications. However, there is a “double fading” effect in… read more here.

Keywords: passive ris; secure communications; ris assisted; ris ... See more keywords

Physical Layer Secret Key Generation With the Aid of Spatially Correlated Active RIS

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recommendations! Published in 2024 at "IEEE Wireless Communications Letters"

DOI: 10.1109/lwc.2023.3335159

Abstract: Recently, there has been a growing interest in utilizing reconfigurable intelligent surfaces (RIS) for physical layer key generation (PLKG) due to their ability to intelligently configure the wireless medium. However, to the best of our… read more here.

Keywords: active ris; secret key; key generation; physical layer ... See more keywords

In-Depth Analysis of HARQ Performance in Active RIS-Assisted RSMA Systems

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recommendations! Published in 2024 at "IEEE Wireless Communications Letters"

DOI: 10.1109/lwc.2024.3445503

Abstract: Utilizing reconfigurable intelligent surface (RIS) technology to construct intelligent radio environments is a prerequisite for developing the sixth-generation (6G) communication networks characterized by ultra-high speed, minimal latency, and extensive connectivity. Therefore, to further enhance the… read more here.

Keywords: system; active ris; harq; performance ... See more keywords

Active Reconfigurable Intelligent Surface-Based Symbiotic Radio: Boosting Mutual Benefits

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recommendations! Published in 2025 at "IEEE Transactions on Cognitive Communications and Networking"

DOI: 10.1109/tccn.2024.3417625

Abstract: In this paper, we investigate a novel active reconfigurable intelligent surface (RIS)-based multiple-input single-output (MISO) symbiotic radio (SR) system where an active RIS leverages its controllable reflecting elements (REs) to assist the legacy and backscatter… read more here.

Keywords: active reconfigurable; active ris; intelligent surface; reconfigurable intelligent ... See more keywords

Joint Beamforming Designs for Active Reconfigurable Intelligent Surface: A Sub-Connected Array Architecture

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recommendations! Published in 2022 at "IEEE Transactions on Communications"

DOI: 10.1109/tcomm.2022.3212749

Abstract: Reconfigurable intelligent surface (RIS) is regarded as a promising technology with great potential to boost wireless networks. Affected by the “double fading” effect, however, conventional passive RIS cannot bring considerable performance improvement when users are… read more here.

Keywords: reconfigurable intelligent; sub connected; architecture; ris ... See more keywords

Prototype and Performance Assessment of mmWave Active RIS-Enhanced 6G Wireless Communications

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recommendations! Published in 2025 at "IEEE Transactions on Green Communications and Networking"

DOI: 10.1109/tgcn.2025.3587012

Abstract: This paper presents an innovative approach for the millimeter-wave (mmWave) band that utilizes an active reconfigurable intelligent surface (RIS) to implement a mmWave end-to-end wireless communication system. We propose a new type of RIS based… read more here.

Keywords: assessment mmwave; performance assessment; active ris; mmwave active ... See more keywords

Fluid/Movable Antenna Meets Active RIS: A Next Generation ISAC System Design

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recommendations! Published in 2025 at "IEEE Transactions on Network Science and Engineering"

DOI: 10.1109/tnse.2025.3626520

Abstract: This paper investigates a fluid antenna system (FAS)/movable antenna (MA) and active reconfigurable intelligent surface (RIS)-aided integrated sensing and communication (ISAC) system. Specifically, we maximize the radar signal-to-noise-ratio (SNR) by jointly optimizing the beamforming matrix… read more here.

Keywords: system; isac system; active ris; fluid movable ... See more keywords