Results 31 to 40 of about 76,183 (298)
Drones, 2023 Unmanned aerial vehicles (UAVs) and reconfigurable intelligent surfaces (RIS) are the promising emerging technologies proposed for the 6th-Generation (6G) network to improve the capacity, reliability, and coverage of wireless communications.
Chi Yen Goh +2 more
doaj +1 more source
STAR-RIS-UAV-Aided Coordinated Multipoint Cellular System for Multi-User Networks
Drones, 2023 Different from conventional reconfigurable intelligent surfaces (RIS), simultaneous transmitting and reflecting RIS (STAR-RIS) can reflect and transmit signals to the receiver. In this paper, to serve more ground users and increase deployment flexibility,
Baihua Shi +8 more
doaj +1 more source
User Location Uncertainty in RIS-Aided Channel Optimization
, 2023 This paper considers an indoor smart radio environment (SRE) where a Base Station (BS) communicates with a set of user equipment (UE) in the sub-THz band by reconfigurable intelligent surfaces (RISs), as the direct BS-UE links are obstructed.
S. Savazzi +4 more
core +1 more source
Enhancing Asia’s trade: price and non-price barriers revisited [PDF]
Journal of International Logistics and Trade, 2010 In a supply-constrained region like Asia, promoting exports has always been a challenge particularly at a time when Asia’s trade has been severely affected by lack of external demand.
Prabir De
doaj +1 more source
Micromachines, 2023 Risedronate sodium (RIS) exhibits limited bioavailability and undesirable gastrointestinal effects when administered orally, necessitating the development of an alternative formulation. In this study, mPEG-coated nanoparticles loaded with RIS-HA-TCS were
Zoya Saifi +7 more
doaj +1 more source
, 2022 Reconfigurable intelligent surfaces (RIS) have recently been investigated for intelligently reforming the blockage or mobility-aware wireless propagation environment as well as improving spectral efficiency and localization error performance.
Md Abdul Latif Sarker +3 more
core +1 more source
User Selection for Simple Passive Beamforming in Multi-RIS-Aided Multi-User Communications
, 2023 This paper focuses on multi-user downlink signal transmission in a wireless system aided by multiple reconfigurable intelligent surfaces (RISs). In such a multi-RIS, multi-user, multi-antenna scenario, determining a set of RIS phase shifts to maximize ...
Wei Jiang, Wei Jiang (8679951)
core +1 more source
Reconfigurable Intelligent Surfaces: possible applications and benefits [PDF]
, 2022 openNegli ultimi anni le Superfici Intelligenti e Riconfigurabili (RIS) sono stati al centro di molti studi per motivi legati al loro possibile utilizzo e i diversi benefici che questo comporta per le reti wireless. Questa tecnologia è considerata una
KOSIAKOV, ARINA
core
Beamforming Dual-loop Optimization Algorithm for RIS-assisted UAV Communication Systems [PDF]
Zhengzhou Daxue xuebao. Gongxue banIn order to enhance the spectrum efficiency of the RIS-UAV relay communication system formed by integrating UAV and RIS in complex urban environments, research was conducted to explore the optimization of maximizing system downlink sum rate of RIS-UAV ...
GUO Xinying, LIU Longfei, ZHU Chunhua
doaj +1 more source
, 2019 A unified search application to link PACS exams with the RIS ...
Ivan Nesic +5 more
core +1 more source