Results 1 to 10 of about 24,858 (168)

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

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

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

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

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

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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