Results 11 to 20 of about 78,791 (201)
Employing High-Dimensional RIS Information for RIS-Aided Localization Systems [PDF]
IEEE Communications LettersReconfigurable intelligent surface (RIS)-aided localization systems have attracted extensive research attention due to their accuracy enhancement capabilities. However, most studies primarily utilized the base stations (BS) received signal, i.e., BS information, for localization algorithm design, neglecting the potential of RIS received signal, i.e ...
Cunhua Pan, Kangda Zhi, Hong Ren
exaly +5 more sources
RIS-Assisted Green Secure Communications: Active RIS or Passive RIS?
IEEE Wireless Communications Letters, 2023 Reconfigurable Intelligent Surface (RIS) is one of the promising techniques for 6G wireless communications, and recently has also been shown to be able to improve secure communications. However, there is a "double fading" effect in the reflection link between base station and user, thus passive RIS only achieves a negligible secrecy gain in typical ...
Jiale Bai, Qingli Yan, Huiming Wang
exaly +4 more sources
Cooperative RIS and STAR-RIS Assisted mMIMO Communication: Analysis and Optimization [PDF]
IEEE Transactions on Vehicular Technology, 2023 accepted in IEEE ...
Anastasios K. Papazafeiropoulos +4 more
openaire +5 more sources
To RIS or Not to RIS: A Ray-Tracing Study of RIS-Assisted Indoor 5G Communications
2025 33rd European Signal Processing Conference (EUSIPCO)Reconfigurable Intelligent Surfaces (RIS) leverage arrays of programmable elements to manipulate incident electromagnetic waves dynamically. In non-line-of-sight conditions between a 5G base station and user equipment, RIS can act as a passive relay, redirecting signals to get around obstacles.In this paper, we use the open-source Sionna library to ...
Khelifi, Manel +3 more
openaire +4 more sources
Monitoring of environmental gases and calf health in Italian Mediterranean buffalo herd
Revista Científica, 2023 In buffalo breeding, calves require special attention and housing systems that provide thermal comfort, good air quality, brightness, and adequate space.
Simona Leonetti +4 more
doaj +1 more source
RIS codebook‐based beamsteering validation and field trials
Electronics LettersReconfigurable intelligent surface (RIS), equipped with a large number of small, low‐cost, and re‐configurable elements, is envisioned as a potential enabler for the upcoming 5G‐Advanced and 6G networks.
Yiwen Wang +3 more
doaj +2 more sources
RIS-Based Steerable Beamforming Antenna with Near-Field Eigenmode Feeder [PDF]
, 2022 We present a novel, power and hardware efficient, antenna system leveraging the eigenmodes of the over-the-air propagation matrix from an active multi-antenna feeder (AMAF) to a large reflective intelligent surface (RIS), both configured as standard ...
Krishan Kumar Tiwari (14039289) +5 more
core +1 more source
Guangtongxin yanjiu, 2022 There are problems of interference between Devices-to-Devices (D2D) communication users and cellular users, mutual interference between D2D communication users, and environmental interference caused by the existence of environmental obstacles in the D2D ...
Feng-ting FU, Li LI, Jing ZHANG
doaj +1 more source
South African Journal of Radiology, 2021 Background: South Africa (SA) has no national injury surveillance system, and hence, non-fatal gunshot injuries are not routinely recorded. Most firearm-related injuries require multi-detector computer tomography (MDCT) assessment at a tertiary-level ...
Dale K. Creamer +3 more
doaj +1 more source
, 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