Results 11 to 20 of about 3,041 (248)

Architecture for sub-100 ms liquid crystal reconfigurable intelligent surface based on defected delay lines [PDF]

Communications Engineering
Reconfigurable intelligent surfaces, comprised of passive tunable elements, are emerging as an essential device for upcoming millimeter wave and terahertz wireless systems. A fundamental aspect of the device involves the tuning technology used to achieve
Robin Neuder, Marc Späth, Martin Schüßler, Alejandro Jiménez-Sáez   +3 more
doaj   +2 more sources

Wireless Communications Through Reconfigurable Intelligent Surfaces

IEEE Access, 2019
The future of mobile communications looks exciting with the potential new use cases and challenging requirements of future 6th generation (6G) and beyond wireless networks. Since the beginning of the modern era of wireless communications, the propagation
Ertugrul Basar, Marco Di Renzo, Julien De Rosny, Merouane Debbah, Mohamed-Slim Alouini, Rui Zhang   +5 more
doaj   +6 more sources

A filtering reconfigurable intelligent surface for interference-free wireless communications [PDF]

Nature Communications
The powerful capability of reconfigurable intelligent surfaces (RISs) in tailoring electromagnetic waves and fields has put them under the spotlight in wireless communications.
Jing Cheng Liang, Lei Zhang, Zhangjie Luo, Rui Zhe Jiang, Zhang Wen Cheng, Si Ran Wang, Meng Ke Sun, Shi Jin, Qiang Cheng, Tie Jun Cui   +9 more
doaj   +2 more sources

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

Artificial noise aided directional modulation via reconfigurable intelligent surface: Secrecy guarantee in range domain

IET Communications, 2022
Recently, the physical limitation of range‐domain security guarantee for directional modulation with frequency diverse array was disclosed in Ding et al. (IEEE Access 8, 63302–63309 (2020)).
Jiangong Chen, Yue Xiao, Xia Lei, Hong Niu, Yanli Yuan   +4 more
doaj   +1 more source

Corrections to “WiThRay: A Versatile Ray-Tracing Simulator for Smart Wireless Environments”

IEEE Access, 2023
In the above article [1], the reconfigurable intelligent surface (RIS) response model in (17) needs to be modified as follows:
Hyuckjin Choi, Jaeky Oh, Jaehoon Chung, George C. Alexandropoulos, Junil Choi   +4 more
doaj   +1 more source

Reconfigurable Intelligent Surface-Empowered MIMO Systems [PDF]

IEEE Systems Journal, 2021
To appear in IEEE SYSTEMS JOURNAL, 9 pages, 6 figures, and 1 ...
Aymen Khaleel, Ertugrul Basar
openaire   +5 more sources

A Survey on the Impact of Intelligent Surfaces in the Terahertz Communication Channel Models

Sensors, 2023
Terahertz (THz) band will play an important role in enabling sixth generation (6G) envisioned applications. Compared with lower frequency signals, THz waves are severely attenuated by the atmosphere temperature, pressure, and humidity.
Jefferson D. S. E Silva, Jéssica A. P. Ribeiro, Vignon F. Adanvo, Samuel B. Mafra, Luciano L. Mendes, Yonghui Li, Rausley A. A. de Souza   +6 more
doaj   +1 more source

Application of reconfigurable intelligent surface in beamforming and information modulation

Dianxin kexue, 2021
In modern mobile communications, the randomness, uncertainty, and uncontrollability of wireless channels are the pivotalfactors that affect the communication quality, which often leads to the deterioration of the signal quality at the receiving terminal,
Qiang CHENG, Junyan DAI, Junchen KE, Jingcheng LIANG, Siran WANG   +4 more
doaj   +2 more sources

Aerial Reconfigurable Intelligent Surface-Enabled URLLC UAV Systems

IEEE Access, 2021
In this paper, we propose an aerial reconfigurable intelligent surface (RIS) system to support the stringent constraints of ultra-reliable low latency communication (URLLC).
Yijiu Li, Cheng Yin, Tan Do-Duy, Antonino Masaracchia, Trung Q. Duong   +4 more
doaj   +1 more source