Results 81 to 90 of about 405,425 (327)
Reconfigurable Intelligent Surfaces for Energy Efficiency in Wireless Communication
, 2019 The adoption of a Reconfigurable Intelligent Surface (RIS) for downlink multi-user communication from a multi-antenna base station is investigated in this paper.
Alexandropoulos, George C. +4 more
core +1 more source
Intelligent Reflecting Surface Aided MIMO Broadcasting for Simultaneous Wireless Information and Power Transfer [PDF]
IEEE Journal on Selected Areas in Communications, 2019 An intelligent reflecting surface (IRS) is invoked for enhancing the energy harvesting performance of a simultaneous wireless information and power transfer (SWIPT) aided system.
Cunhua Pan +6 more
semanticscholar +1 more source
Intelligent Reflecting Surface Assisted Localization: Opportunities and Challenges
Electronics, 2022 Future generation communication systems are aiming to provide a tremendous high data rate with low-latency high reliable and three-dimensional coverage. To achieve such a challenging goal, it is required to have very precise location information related to the mobile terminal.
Samarendra Nath Sur +4 more
openaire +2 more sources
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Intelligent reflecting surface for sum rate enhancement in MIMO systems
Digital Communications and NetworksThe research for the Intelligent Reflecting Surface (IRS) which has the advantages of cost and energy efficiency has been studied. Channel capacity can be effectively increased by appropriately setting the phase value of IRS elements according to the ...
Chan-Yeob Park +4 more
doaj +1 more source
Rate-energy region of MIMO systems with sustainable intelligent reflecting surface
ICT Express, 2022 We consider MIMO systems with self-sustainable intelligent reflecting surface (IRS), where IRS can harvest energy from received power. We characterize the achievable region of rate-energy pairs and propose an alternating optimization algorithm to try to ...
Minsik Kim, Daeyoung Park
doaj +1 more source
Deep Residual Learning for Channel Estimation in Intelligent Reflecting Surface-Assisted Multi-User Communications [PDF]
IEEE Transactions on Wireless Communications, 2020 Channel estimation is one of the main tasks in realizing practical intelligent reflecting surface-assisted multi-user communication (IRS-MUC) systems.
Chang Liu +3 more
semanticscholar +1 more source
Molecular Oncology, EarlyView.Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee +8 more
wiley +1 more source
Intelligent reflecting surface design for 6G-assited Internet of things
物联网学报, 2020 In the era of the 6G cellular networks,the base station (BS) should be able to provide seamless connectivity for a large number of Internet of things (IoT) devices distributed in various areas.However,constrained by their locations,some IoT devices may ...
Zhaorui WANG +3 more
doaj +2 more sources
Massive MIMO is a Reality -- What is Next? Five Promising Research Directions for Antenna Arrays
, 2019 Massive MIMO (multiple-input multiple-output) is no longer a "wild" or "promising" concept for future cellular networks - in 2018 it became a reality.
Björnson, Emil +4 more
core +1 more source