Results 21 to 30 of about 9,292 (252)

Joint optimization of antenna selection and beamforming in MIMO SWIPT systems with bidirectional communication

open access: yesIET Communications, 2021
This paper investigates joint optimization of antenna selection and beamforming in multiple‐input multiple‐output simultaneous wireless information and power transfer systems with bidirectional communication.
Mohammadali Hedayati, Shahram Yousefi
doaj   +1 more source

Transmit Beamforming Design Based on Multi-Receiver Power Suppression for STAR Digital Array

open access: yesSensors
The simultaneous transmit and receive (STAR) array system provides higher radiation gain and data rate compared to traditional radio system. Because of the various mutual couplings between each pair of transmit and receive elements, it is a great ...
Tairan Lin   +3 more
doaj   +1 more source

Passive Intermodulation in Simultaneous Transmit–Receive Systems: Modeling and Digital Cancellation Methods

open access: yesIEEE Transactions on Microwave Theory and Techniques, 2020
This article presents novel solutions for suppressing passive intermodulation (PIM) distortion in frequency-division duplexing (FDD)-based radio transceivers, stemming from nonlinear radio frequency (RF) components and simultaneous transmission and reception, with special emphasis on modern carrier aggregation networks.
Waheed, Muhammad Zeeshan   +11 more
openaire   +4 more sources

Beam-shape loss for multiple-beam digital array radars

open access: yesThe Journal of Engineering, 2019
This study considers beam-shape loss (BSL) for pencil-beam digital array radars (DARs), when multiple simultaneous receive beams are formed to cover the volume illuminated by each transmit beam.
Yuan Yao, Guangxin Wu
doaj   +1 more source

Temperature Measurements in the Vicinity of Human Intracranial EEG Electrodes Exposed to Body-Coil RF for MRI at 1.5T

open access: yesFrontiers in Neuroscience, 2020
The application of intracranial electroencephalography (icEEG) recording during functional magnetic resonance imaging (icEEG-fMRI) has allowed the study of the hemodynamic correlates of epileptic activity and of the neurophysiological basis of the blood ...
Hassan B. Hawsawi   +10 more
doaj   +1 more source

Infection Control Practices for Vascular Access Management in Hemodialysis: Results From a Nationwide Survey of Japanese National University Hospitals

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Bloodstream infections due to repeated vascular access (VA) puncture and circuit connections remain major concerns in hemodialysis. Therefore, we examined current practices for glove, disinfectant, and personal protective equipment (PPE) use according to VA type in national university hospitals in Japan.
Aiko Yamada   +6 more
wiley   +1 more source

Simultaneous Wireless Information and Power Transfer for MIMO Interference Channel Networks Based on Interference Alignment

open access: yesEntropy, 2017
This paper considers power splitting (PS)-based simultaneous wireless information and power transfer (SWIPT) for multiple-input multiple-output (MIMO) interference channel networks where multiple transceiver pairs share the same frequency spectrum.
Anming Dong   +3 more
doaj   +1 more source

Airborne polarimetric Doppler weather radar: trade-offs between various engineering specifications [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2018
NCAR EOL is investigating potential configurations for the next-generation airborne phased array radar (APAR) that is capable of retrieving dynamic and microphysical characteristics of clouds and precipitation. The APAR will operate at C band.
J. Vivekanandan, E. Loew
doaj   +1 more source

The Simultaneous Transmit And Receive (STAR) Message Protocol

open access: yesSupercomputing Frontiers and Innovations, 2017
The STAR protocol is introduced, which solves three problems with MPI, a well known secur- ity problem, and three exascale communication problems. Optical implementations are developed compatible with 100 Gbit/sec Ethernet. Automatic fault resilience mechanisms are discussed, which improve HPC quality of service, and meet the exascale reliability and ...
openaire   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

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