Results 31 to 40 of about 332,498 (295)
Mechatronic Reconfigurable Intelligent‐Surface‐Driven Indoor Fifth‐Generation Wireless Communication
Advanced Intelligent Systems, 2022 Reconfigurable intelligent surface‐assisted wireless networks have been proposed to overcome the current technical issues in fifth‐generation (5G) wireless communication systems.
Heijun Jeong +3 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 +4 more
doaj +1 more source
Radar Target Detection Aided by Reconfigurable Intelligent Surfaces [PDF]
IEEE Signal Processing Letters, 2021 In this work, we consider the target detection problem in a sensing architecture where the radar is aided by a reconfigurable intelligent surface (RIS), that can be modeled as an array of sub-wavelength small reflective elements capable of imposing a tunable phase shift to the impinging waves and, ultimately, of providing the radar with an additional ...
Stefano Buzzi +3 more
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 +6 more
doaj +1 more source
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 +7 more
openaire +2 more sources
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 +4 more
doaj +1 more source
On Spatial Multiplexing Using Reconfigurable Intelligent Surfaces [PDF]
IEEE Wireless Communications Letters, 2021 We consider an uplink multi-user scenario and investigate the use of reconfigurable intelligent surfaces (RIS) to optimize spatial multiplexing performance when a linear receiver is used. We study two different formulations of the problem, namely maximizing the effective rank and maximizing the minimum singular value of the RIS-augmented channel.
Mohamed A. ElMossallamy +6 more
openaire +3 more sources
Parameters and Measurement Techniques of Reconfigurable Intelligent Surfaces
Micromachines, 2022 Reconfigurable intelligent surface (RIS)-aided wireless communications systems are one the promising wireless communication system where the wave can be guided by the RIS. It is envisioned that beyond-5G/6G communication will have a low-cost, high spectral efficiency, high energy efficiency, and smart wireless environment.
Biswarup Rana, Sung-Sil Cho, Ic-Pyo Hong
openaire +3 more sources
On the Optimal Number of Reflecting Elements for Reconfigurable Intelligent Surfaces [PDF]
IEEE Wireless Communications Letters, 2021 This work considers a point-to-point link where a reconfigurable intelligent surface assists the communication between transmitter and receiver. The system rate, energy efficiency, and their trade-off are optimized with respect to the number of individually tunable elements of the intelligent surface.
Alessio Zappone +3 more
openaire +4 more sources
Beampattern design for radars with reconfigurable intelligent surfaces
2023 IEEE Radar Conference (RadarConf23), 2023 This manuscript will be published in the Proceedings of the 2023 IEEE Radar ...
Grossi E., Venturino L.
openaire +2 more sources