Results 11 to 20 of about 60,314 (279)
Multicell MIMO Communications Relying on Intelligent Reflecting Surfaces [PDF]
IEEE Transactions on Wireless Communications, 2020 Intelligent reflecting surfaces (IRSs) constitute a disruptive wireless communication technique capable of creating a controllable propagation environment.
Elkashlan, Maged +6 more
core +9 more sources
On the Aperture Efficiency of Intelligent Reflecting Surfaces [PDF]
IEEE Wireless Communications Letters, 2021 The concept of intelligent reflecting surfaces (IRS) has recently gained significant attention due to their ability to manipulate the impinging electromagnetic signals and offer anomalous reflections. In this letter, we derive and address the missing piece of prior works, namely the IRS aperture efficiency .
Shih-Kai Chou +3 more
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Wireless Network Coding With Intelligent Reflecting Surfaces [PDF]
IEEE Communications Letters, 2021 Conventional wireless techniques are becoming inadequate for beyond fifth-generation (5G) networks due to latency and bandwidth considerations. To improve the error performance and throughput of wireless communication systems, we propose physical layer network coding (PNC) in an intelligent reflecting surface (IRS)-assisted environment.
Amanat Kafizov +3 more
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Intelligent Reflecting Surface Aided Vehicular Communications [PDF]
2020 IEEE Globecom Workshops (GC Wkshps, 2020 We investigate the use of an intelligent reflecting surface (IRS) in a millimeter-wave (mmWave) vehicular communication network. An intelligent reflecting surface consists of passive elements, which can reflect the incoming signals with adjustable phase shifts. By properly tuning the phase shifts we can improve link performance.
Dampahalage, D. (Dilin) +3 more
openaire +3 more sources
Intelligent Reflecting Surface Enhanced Millimeter-Wave NOMA Systems [PDF]
IEEE Communications Letters, 2020 In this paper, a downlink intelligent reflecting surface (IRS) enhanced millimeter-wave (mmWave) non-orthogonal multiple access (NOMA) system is considered. A joint optimization problem over active beamforming, passive beamforming and power allocation is formulated. Due to the highly coupled variables, the formulated optimization problem is non-convex.
Jiakuo Zuo +3 more
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Covert Federated Learning via Intelligent Reflecting Surfaces
IEEE Transactions on Communications, 2023 Over-the-air computation (OAC) is a promising technology that can achieve rapid model aggregation by utilizing the wireless waveform superposition feature to harness the interference of multiple-access channel for wireless federated learning (FL). However, OAC-based aggregation for OAC faces critical security challenges due to unfavorable and wireless ...
Jie Zheng +5 more
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Massive MIMO Communication With Intelligent Reflecting Surface
IEEE Transactions on Wireless Communications, 2023 This paper studies the feasibility of deploying intelligent reflecting surfaces (IRSs) in massive MIMO (multiple-input multiple-output) systems to improve the performance of users in the service dead zone. To reduce the channel training overhead, we advocate a novel protocol for the uplink communication in the IRS-assisted massive MIMO systems.
Zhaorui Wang +3 more
openaire +2 more sources
Enabling Panoramic Full-Angle Reflection Via Aerial Intelligent Reflecting Surface [PDF]
2020 IEEE International Conference on Communications Workshops (ICC Workshops), 2020 This paper proposes a new three dimensional (3D) networking architecture enabled by aerial intelligent reflecting surface (AIRS) to achieve panoramic signal reflection from the sky. Compared to the conventional terrestrial IRS, AIRS not only enjoys higher deployment flexibility, but also is able to achieve 360$^\circ$ panoramic full-angle reflection ...
Lu, Haiquan +3 more
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Electromagnetic Model of Reflective Intelligent Surfaces [PDF]
IEEE Open Journal of the Communications Society, 2021 An accurate and simple analytical model for the computation of the reflection amplitude and phase of Reconfigurable Intelligent Surfaces is presented. The model is based on a transmission-line circuit representation of the RIS which takes into account the physics behind the structure including the effect of all relevant geometrical and electrical ...
Costa F., Borgese M.
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Hybrid Relay-Reflecting Intelligent Surface-Assisted Wireless Communications
IEEE Transactions on Vehicular Technology, 2022 Reconfigurable intelligent surface (RIS) has emerged as a cost- and energy-efficient solution to enhance the wireless communication capacity. However, recent studies show that a very large surface is required for a RIS-assisted communication system; otherwise, they may be outperformed by the conventional relay.
Nhan Thanh Nguyen +3 more
openaire +3 more sources