Results 31 to 40 of about 1,655,438 (284)

A reconfigurable intelligent surface with integrated sensing capability [PDF]

Scientific Reports, 2021
AbstractReconfigurable reflective surfaces can alter the propagation environment to improve wireless communication and power transfer. Paramount to this operation—which has attracted much attention recently—is the assumption that the reflective surface has prior knowledge of the propagation environment, for example, the direction/location of the ...
Alamzadeh, Idban, Alexandropoulos, George C., Shlezinger, Nir, Imani, Mohammadreza F.   +3 more
openaire   +4 more sources

Study and Design of Reconfigurable Intelligent Surfaces [PDF]

, 2022
In this thesis, we introduce the fundamental equations behind the estimation of the link budget in a communications channel, highlighting the key limitations of conventional systems.
Spanakis-Misirlis, Apostolos
core  

Survey on reconfigurable intelligent surfaces below 10 GHz

EURASIP Journal on Wireless Communications and Networking, 2021
Reconfigurable intelligent surface (RIS) is a programmable structure that can be used to control the propagation of electromagnetic waves by changing the electric and magnetic properties of the surface.
Visa Tapio, Ibrahim Hemadeh, Alain Mourad, Arman Shojaeifard, Markku Juntti   +4 more
doaj   +1 more source

Binary Reconfigurable Intelligent Surfaces with Angle-Independent Reflection Phase

, 2023
In this presentation we investigate the use of physical optics (PO) approximation in the design of binary reconfigurable intelligent surfaces (RISs). We show that PO may be used to design and study RIS operating in a wide sheer of incidence and deviation
Simovski, C.R., Lerosey, G., Shabanpour, J., Lenets, V.   +3 more
core   +1 more source

Experimental Demonstration of a mmWave Passive Access Point Extender Based on a Binary Reconfigurable Intelligent Surface

Frontiers in Communications and Networks, 2021
As data rates demands are exploding, 5G will soon rely on mmWaves that offer much higher bandwidths. Yet at these frequencies, attenuation and diffraction of waves require point to point communications with beamforming base stations that are complex and ...
Vladislav Popov, Mikhail Odit, Jean-Baptiste Gros, Vladimir Lenets, Akira Kumagai, Mathias Fink, Kotaro Enomoto, Geoffroy Lerosey   +7 more
doaj   +1 more source

Revolutionizing Optical Wireless Communications via Smart Optics

IEEE Open Journal of the Communications Society, 2022
The heterogeneity of optical wireless networks (OWNs) has expanded over decades in terms of services, node densities, mobility requirements, bandwidth needs, responsiveness, and physical device profile.
Amr M. Abdelhady, Osama Amin, Mohamed-Slim Alouini, Basem Shihada   +3 more
doaj   +1 more source

Reconfigurable Intelligent Surface Aided NOMA Networks [PDF]

IEEE Journal on Selected Areas in Communications, 2020
Reconfigurable intelligent surfaces (RISs) constitute a promising performance enhancement for next-generation (NG) wireless networks in terms of enhancing both their spectrum efficiency (SE) and energy efficiency (EE). We conceive a system for serving paired power-domain non-orthogonal multiple access (NOMA) users by designing the passive beamforming ...
Tianwei Hou, Yuanwei Liu, Zhengyu Song, Xin Sun 0008, Yue Chen 0002, Lajos Hanzo   +5 more
openaire   +4 more sources

Reconfigurable Intelligent Surfaces: Channel Characterization and Modeling

Proceedings of the IEEE, 2022
Reconfigurable intelligent surfaces (RISs) are two dimensional (2D) metasurfaces which can intelligently manipulate electromagnetic waves by low-cost near passive reflecting elements. RIS is viewed as a potential key technology for the sixth generation (6G) wireless communication systems mainly due to its advantages in tuning wireless signals, thus ...
Jie Huang 0004, Cheng-Xiang Wang 0001, Yingzhuo Sun, Rui Feng 0002, Jialing Huang, Bolun Guo, Zhimeng Zhong, Tie Jun Cui   +7 more
openaire   +3 more sources

Smart radio environments empowered by reconfigurable AI meta-surfaces: an idea whose time has come

EURASIP Journal on Wireless Communications and Networking, 2019
Future wireless networks are expected to constitute a distributed intelligent wireless communications, sensing, and computing platform, which will have the challenging requirement of interconnecting the physical and digital worlds in a seamless and ...
Marco Di Renzo, Merouane Debbah, Dinh-Thuy Phan-Huy, Alessio Zappone, Mohamed-Slim Alouini, Chau Yuen, Vincenzo Sciancalepore, George C. Alexandropoulos, Jakob Hoydis, Haris Gacanin, Julien de Rosny, Ahcene Bounceur, Geoffroy Lerosey, Mathias Fink   +13 more
doaj   +1 more source

Reconfigurable intelligent surface with 6G for industrial revolution: Potential applications and research challenges

Paladyn, 2023
With proper tuning in the phase shift of reconfigurable intelligent surfaces (RISs) or intelligent reflecting surfaces (IRSs), which consist of huge number of passive reflecting elements, are the most promising and transforming technology to reconfigure ...
Singh Ashish K., Maurya Ajay K., Prakash Ravi, Thakur Prabhat, Tiwari Brij Bihari   +4 more
doaj   +1 more source