Results 11 to 20 of about 20,358 (233)

UPLC-QTOF-MS/MS and Antifungal Activity of a Fraction Enriched in Saponins From Sarcomphalus joazeiro Against Candida spp. [PDF]

open access: yesBiomed Chromatogr
ABSTRACT The development of antifungal resistance is a complex process that involves the interaction between hosts, drugs, and microbial factors, all of which contribute to therapeutic ineffectiveness. For this reason, studies on natural products as possible therapeutic alternatives are increasingly necessary in order to gain a better understanding of ...
da Silva ARP   +12 more
europepmc   +2 more sources

Multiuser Detection For Asynchronous ARGOS Signals [PDF]

open access: yes, 2010
In this paper, we investigate the application of multiuser detection techniques to a Low Polar Orbit (LPO) mobile satellite used in the ARGOS system. These techniques are used to mitigate the multiple access interference in the uplink transmission of the
Calmettes, Thibaud   +4 more
core   +1 more source

Receiver Multiuser Diversity Aided Multi-Stage MMSE Multiuser Detection: A Low-Complexity Detector Fast-Converging to the Optimum [PDF]

open access: yes, 2010
Design of low-complexity detection schemes that can approach near-optimum bit error rate (BER) performance in multiuser or other multiple-input multiple-output (MIMO) systems has always been highly challenging.
Yang, Lie-Liang, Lie-Liang Yang
core   +1 more source

A Hybrid Approach to Spatial Multiplexing in Multiuser MIMO Downlinks

open access: yesEURASIP Journal on Wireless Communications and Networking, 2004
In the downlink of a multiuser multiple-input multiple-output (MIMO) communication system, simultaneous transmission to several users requires joint optimization of the transmitted signals. Allowing all users to have multiple antennas adds an additional
Spencer Quentin H., Swindlehurst A. Lee
doaj   +2 more sources

Joint Modulation Classification and User Number Detection for Multiuser MIMO-STBC Systems

open access: yesInformation, 2016
The research on non-cooperative multiuser multiple-input multiple-output with space-time block code (MIMO-STBC) communication systems is a challenging and important task. However, to our knowledge, there is little report of this topic.
Guobing Qian, Zongli Ruan, Jianqi Lu
doaj   +1 more source

Exploring Urinary Extracellular Vesicles and Immune Mediators as Biomarkers of Kidney Injury in COVID-19 Hospitalized Patients

open access: yesDiagnostics, 2022
Kidney injury is an important outcome associated with COVID-19 severity. In this regard, alterations in urinary extracellular vesicles (uEVs) could be detected in the early phases of renal injury and may be reflective of the inflammatory process. This is
Thalia Medeiros   +7 more
doaj   +1 more source

Reduced-Dimension Multiuser Detection [PDF]

open access: yesIEEE Transactions on Information Theory, 2010
We present a reduced-dimension multiuser detector (RD-MUD) structure for synchronous systems that significantly decreases the number of required correlation branches at the receiver front-end, while still achieving performance similar to that of the conventional matched-filter (MF) bank.
Yao Xie 0002   +2 more
openaire   +3 more sources

Lightweight and DoS Resistant Multiuser Authentication in Wireless Sensor Networks for Smart Grid Environments

open access: yesIEEE Access, 2019
Using a smart grid, which increases efficiency and makes it easier to monitor critical equipment in a power grid. Online real-time applications equipped with a wireless sensor network (WSN) sense and collect data in order to provide information on power ...
Farah Afianti, Wirawan, Titiek Suryani
doaj   +1 more source

Joint Method of Moments (JMoM) and Successive Moment Cancellation (SMC) Multiuser Time Synchronization for ZP-OFDM-Based Waveforms Applicable to Joint Communication and Sensing

open access: yesSensors, 2023
It has been recently shown that zero padding (ZP)-orthogonal frequency-division multiplexing (OFDM) is a promising candidate for 6G wireless systems requiring joint communication and sensing.
Koosha Pourtahmasi Roshandeh   +2 more
doaj   +1 more source

An Optical Interference Suppression Scheme for TCSPC Flash LiDAR Imagers

open access: yesApplied Sciences, 2019
This paper describes an optical interference suppression scheme that allows flash light detection and ranging (LiDAR) imagers to run safely and reliably in uncontrolled environments where multiple LiDARs are expected to operate concurrently. The issue of
Lucio Carrara, Adrian Fiergolski
doaj   +1 more source

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