Results 1 to 10 of about 20,358 (233)

Modulation of fibroblast behavior by Leishmania: a pathway to understanding disease progression in cutaneous leishmaniasis [PDF]

open access: yesBMC Microbiology
Leishmaniasis is a parasitic infection caused by obligatory intracellular protozoa of the Leishmania genus. Macrophages are the main cell for Leishmania parasites that play a key role in immune response against it.
Tarcisio Navegante de Queiroz Filho   +2 more
doaj   +2 more sources

Efficient Transmit Antenna Subset Selection for Multiuser Space–Time Line Code Systems

open access: yesSensors, 2021
We consider the problem of the efficient transmit antenna subset (TAS) selection for maximizing the signal-to-interference-plus-noise ratio (SINR) of multiuser space–time line code (MU–STLC) systems.
Sangchoon Kim
doaj   +1 more source

Joint Beamforming and Power Allocation for Multiuser MISO Broadcast Channel SWIPT Employing OFDM

open access: yesIEEE Access, 2021
Resource allocation strategies for simultaneous wireless information and power transfer (SWIPT) employing orthogonal frequency division multiplexing (OFDM) typically rely on subcarrier assignment for multiple access.
Richard P. Ketcham   +2 more
doaj   +1 more source

Robust Cooperative Beamforming and Its Feasibility Analysis in Multiuser Multirelay Networks

open access: yesIEEE Access, 2022
In this paper, we study the optimal cooperative beamforming problem in the amplify-and-forward (AF) multi-user and multi-relay networks, which face the challenges of rapid node number variations and per-node power limits. To achieve extra diversity gain,
Xinyao Ding, Yan Wang
doaj   +1 more source

Implementation of Virtual Fiber Optic Module Using Virtual Reality for Vocational Telecommunications Students

open access: yesJOIV: International Journal on Informatics Visualization, 2023
Virtual Reality (VR) technology is a computer technology capable of replicating a real environment into an immersive world. VR is also capable of simulating the user's physical condition so that they are able to interact.
Sritrusta Sukaridhoto   +4 more
doaj   +1 more source

Low-Complexity Detectors for Uplink Massive MIMO Systems Leveraging Truncated Polynomial Expansion

open access: yesIEEE Access, 2022
In this work, we propose low-complexity detectors for massive multiple-input multiple-output (MIMO) systems. Particularly, we leverage variants of truncated polynomial expansion (TPE) in order to reduce the computational complexity of the signal ...
Kazem Izadinasab   +2 more
doaj   +1 more source

A Survey on Multiuser SWIPT Communications for 5G+

open access: yesIEEE Access, 2022
Increasing number of devices connected to the networks, applications and demands of new generation wireless communications cause very high energy consumption resulting in large amount of carbon emission.
S. Ozyurt   +4 more
doaj   +1 more source

Serum ferritin at admission in hospitalized COVID-19 patients as a predictor of mortality

open access: yesBrazilian Journal of Infectious Diseases, 2021
Introduction: Some COVID-19 patients have higher mortality and the responsible factors for this unfavorable outcome is still not well understood. Objective: To study the association between ferritin levels at admission, representing an inflammatory state,
Katia Lino   +9 more
doaj   +1 more source

Multiuser Multi-Hop AF MIMO Relay System Design Based on MMSE-DFE Receiver

open access: yesIEEE Access, 2019
To achieve a better long source-destination distance communication in uplink multiaccess scenarios, we propose a multiuser multi-hop amplify-and-forward (AF) multiple-input multiple-output (MIMO) relay technique with nonlinear minimal mean-squared error (
Yang Lv, Zhiqiang He, Yue Rong
doaj   +1 more source

Exploiting Opportunistic Multiuser Detection in Decentralized Multiuser MIMO Systems [PDF]

open access: yesGLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference, 2009
This paper studies the design of a decentralized multiuser multi-antenna (MIMO) system for spectrum sharing over a fixed narrow band, where the coexisting users independently update their transmit covariance matrices for individual transmit-rate maximization via an iterative manner.
Rui Zhang 0006, John M. Cioffi
openaire   +3 more sources

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