Results 11 to 20 of about 5,091,880 (125)

Physical layer security of reconfigurable intelligent surface empowered wireless network with cooperative jammer [PDF]

, 2022
This paper evaluates the physical layer security performance of a reconfigurable intelligent surface (RIS) enabled wireless network in the presence of a passive eavesdropper.
Olakanmi Oladayo Olufemi, Pius Adewale Owolawi, Owolawi, Pius Adewale, Kehinde Oluwasesan Odeyemi, Olufemi, Olakanmi Oladayo, Odeyemi, Kehinde Oluwasesan   +5 more
core   +1 more source

Reconfigurable Intelligent Surface Optimal Placement in Millimeter-Wave Networks [PDF]

, 2021
peer reviewedThis work discusses the optimal reconfigurable intelligent surface placement in highly-directional millimeter wave links. In particular, we present a novel system model that takes into account the relationship between the transmission beam ...
Boulogeorgos, Alexandros-Apostolos A., Alexiou, Angeliki, Lazarakis, Fotis, Selimis, Dimitrios, NTONTIN, Konstantinos, CHATZINOTAS, Symeon   +5 more
core   +1 more source

Autonomous Reconfigurable Intelligent Surfaces Through Wireless Energy Harvesting [PDF]

, 2022
In this paper, we examine the potential for a reconfigurable intelligent surface (RIS) to be powered by energy harvested from information signals. This feature might be key to reap the benefits of RIS technology's lower power consumption compared to ...
Abadal Cavallé, Sergi, Martins, Wallace Alves, Alexiou, Angeliki, Lazarakis, Fotis, Abadal, Sergi, ALVES MARTINS, Wallace, Boulogeorgos, Apostolos-Alexandros A., Selimis, Dimitrios, NTONTIN, Konstantinos, Björnson, Emil, CHATZINOTAS, Symeon, KISSELEFF, Steven, Boulogeorgos, Alexandros Apostolos A.   +12 more
core   +1 more source

Time vs. Unit Cell Splitting for Autonomous Reconfigurable Intelligent Surfaces [PDF]

, 2022
In this work, we propose a time- and a unit cell-splitting protocol for supplying the energy needs of reconfigurable intelligent surfaces (RISs) through wireless energy harvesting (EH) from information signals. We first compute the RIS energy consumption
Abadal Cavallé, Sergi, Boulogeorgos, Alexandros-Apostolos A., Mesodiakaki, Agapi, Abadal, Sergi, NTONTIN, Konstantinos, CHATZINOTAS, Symeon, Chatzinotas, Simeon, ABDULLAH, Zaid, Boulogeorgos, Alexandros Apostolos A.   +8 more
core   +1 more source

Programmable Beam-Steering Capabilities Based on Graphene Plasmonic THz MIMO Antenna via Reconfigurable Intelligent Surfaces (RIS) for IoT Applications [PDF]

, 2022
The approaching sixth-generation (6G) communication network will modernize applications and satisfy user demands through implementing a smart and reconfigurable system with a higher data rate and wider bandwidth.
Khaleel, Sherif A., Sherif A. Khaleel, Ehab K. I. Hamad, Naser Ojaroudi Parchin, Parchin, Naser Ojaroudi, Mohamed B. Saleh, Saleh, Mohamed B., Hamad, Ehab K. I.   +7 more
core   +1 more source

The graphene application for the Reconfigurable Intelligent Surface (RIS) design for the NOMA-RIS-MIMO system. Phenomenological view.

, 2023
The material is dedicated to various aspects of graphene metasurface implementation of the Reconfigurable Intelligent Surface (RIS) in the framework of the incoherent paradigm for NOMA-RIS-MIMO transmission design.
Valeri Kontorovich (12091406)
core   +1 more source

Reconfigurable intelligent surface (RIS): Eigenvalue decomposition-based separate channel estimation

, 2021
Reconfigurable intelligent surface (RIS) has recently drawn significant attention in wireless communication technologies. However, identifying, modeling, and estimating the RIS channel in multiple-input multiple-output (MIMO) systems are considered ...
Zegrar, Salah Eddine, Afeef, Liza, Arslan, Hüseyin   +2 more
core   +1 more source

Fluid-infiltrated on-axis ultra-compact reconfigurable intelligent surface for application of free-space optical communication

, 2023
Free space optical (FSO) communication is an evolving technology that opens up the doors to use huge unlicensed bandwidth and can manifest high-speed communication.
Massoud, Yehia Mahmoud, Khalid, R., Zubair, M., Mehmood, N., Mehmood, M. Q.   +4 more
core   +1 more source

RIS-enabled mmWave Channel Sounding Based on Electronically Reconfigurable Transmitarrays

, 2021
International audienceIn this paper we present a millimeter wave radio channel sounding campaign, enabled by Reconfigurable Intelligent Surfaces (RISs). The measurement setup is based on an electronically reconfigurable Transmitting-RIS (T-RIS) composed ...
Claude Oestges, Raffaele D'Errico, Mudonhi, Alfred, Clemente, Antonio, d'Errico, Raffaele, Lotti, Marina, Marina Lotti, Oestges, Claude, Antonio Clemente, Alfred Mudonhi   +9 more
core   +1 more source

Localization via Multiple Reconfigurable Intelligent Surfaces Equipped with Single Receive RF Chains [PDF]

, 2022
The extra degrees of freedom resulting from the consideration of Reconfigurable Intelligent Surfaces (RISs) for smart signal propagation can be exploited for high accuracy localization and tracking.
Alexandropoulos, G. C.,, Vinieratou, Ioanna,, Wymeersch, Henk,, Wymeersch, Henk, Vinieratou, Ioanna, Alexandropoulos, G. C.   +5 more
core   +1 more source