Results 41 to 50 of about 20,102 (166)

Secrecy Performance Enhancement for Underlay Cognitive Radio Networks Employing Cooperative Multi-Hop Transmission with and without Presence of Hardware Impairments

open access: yesEntropy, 2019
In this paper, we consider a cooperative multi-hop secured transmission protocol to underlay cognitive radio networks. In the proposed protocol, a secondary source attempts to transmit its data to a secondary destination with the assistance of multiple ...
Phu Tran Tin   +4 more
doaj   +1 more source

Investigation of 2DOF PID Controller for Physio-Therapeutic Application for Elbow Rehabilitation

open access: yesApplied Sciences, 2021
The aim of this work is to evaluate the output of a two-degree of freedom (DOF) proportional integral derivative (PID) controller for controlling elbow flexion and extension on an upper limb rehabilitation robot of an existing model.
Rupal Roy   +8 more
doaj   +1 more source

Mixed RF/FSO Relaying Systems with Hardware Impairments [PDF]

open access: yesGLOBECOM 2017 - 2017 IEEE Global Communications Conference, 2017
In this work, we provide a detailed analysis of a dual-hop fixed gain (FG) amplify-and-forward relaying system, consisting of a hybrid radio frequency (RF) and free-space optical (FSO) channels. We introduce an impairment model which is the soft envelope limiter (SEL).
Elyes Balti   +3 more
openaire   +2 more sources

The influence of hardware impairment on the sys

open access: yes, 2019
In this research, the system performance of the half-duplex two-way relay network under hardware impairment condition is presented and investigated. In this system model, the time switching protocol and amplify-and-forward (AF)-based are considered. First, of all, the analytical expressions of the outage probability, and achievable throughput with the ...
Le Anh Vu   +4 more
openaire   +1 more source

Improving the Performance of Spatial Modulation Full-Duplex Relaying System With Hardware Impairment Using Transmit Antenna Selection

open access: yesIEEE Access, 2020
This paper aims to study the impact of hardware impairments (HI) on the performance of spatial modulation (SM) system with full-duplex relay (FDR), namely SM-FDR system.
Ba Cao Nguyen   +2 more
doaj   +1 more source

Extending RIS Life Span for Reliable Communication Under Hardware Ageing Effects

open access: yesIEEE Open Journal of the Communications Society
In this paper, we address the critical aspect of hardware ageing effects in reconfigurable intelligent surfaces (RISs), whereby the problem of extending the RIS’s life cycle under the impact of non-residual stochastic hardware impairment is ...
Atiquzzaman Mondal   +4 more
doaj   +1 more source

COMPREHENSIVE TREATMENT OF PATIENTS WITH CHRONIC BRAIN ISCHEMIA. PURPOSEFUL CORRECTION OF COGNITIVE IMPAIRMENT AND RECOVERY OF MOTOR FUNCTIONS AFTER A STROKE

open access: yesКлінічна та профілактична медицина, 2020
Background. Vascular cerebral pathology, caused by a slowly progressing diffuse insufficiency of blood supply to brain tissue, leads to a progressive impairment of brain function, is a predictor of stroke, shaping the development of immune failure of ...
T.V. Cherniy   +2 more
doaj   +1 more source

Total Elbow Arthroplasty and Antegrade Posterior Interosseous Flap for Infected Posttraumatic Arthritis with an Active Fistula. A Rationale for Comprehensive Treatment. Case Report

open access: yesJournal of Shoulder and Elbow Arthroplasty, 2022
The indication for total elbow arthroplasty (TEA) for primary and posttraumatic elbow arthritis has increased, however, its indication after infection remains elusive.
Efraín Farías-Cisneros MD, PhD, FACS   +5 more
doaj   +1 more source

RIS-Assisted NOMA Systems: Performance Analysis Under HWI and Channel Estimation Error

open access: yesIEEE Access
This paper inspects a reconfigurable intelligent surface (RIS)-aided non-orthogonal multiple access (NOMA) wireless network where users convey to the base station (BS) through the support of RIS.
Merve Ucar-Gul   +2 more
doaj   +1 more source

Portable hardware & software technologies for addressing ophthalmic health disparities: A systematic review

open access: yesDigital Health, 2022
Vision impairment continues to be a major global problem, as the WHO estimates 2.2 billion people struggling with vision loss or blindness. One billion of these cases, however, can be prevented by expanding diagnostic capabilities.
Margarita Labkovich   +11 more
doaj   +1 more source

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