Results 41 to 50 of about 13,322 (283)
IEEE Access, 2022 This work conceives dictionary-learning (DL)-based sparse channel estimation schemes for multi-user Terahertz (THz) hybrid MIMO systems incorporating also non-idealities such as hardware impairments and beam-squint effect.
Priyanka Maity +3 more
doaj +1 more source
IEEE Open Journal of the Communications SocietyThis study assesses the performance of communication links between low Earth orbit (LEO) satellites and high-altitude platforms (HAPs), which are critical for emerging global communication infrastructures.
Yerulan Zikibayev +4 more
doaj +1 more source
Performance Analysis of Two-Way Multi-Antenna Multi-Relay Networks With Hardware Impairments
IEEE Access, 2017 In this paper, a two-way multi-antenna and multi-relay amplify-and-forward (AF) network with hardware impairments is analyzed. The opportunistic relay selection scheme is used in the relay selection. Maximum ratio transmission and maximum ratio combining
Kefeng Guo, Daoxing Guo, Bangning Zhang
doaj +1 more source
PERFORMANCE ANALYSIS OF FUTURE COMMUNICATIONS SYSTEMS UNDER RESIDUAL HARDWARE IMPAIRMENTS [PDF]
, 2020 Cognitive radio (CR) and millimeter wave (mmWave) communication are two potential technologies for future wireless communication systems to meet ever-increasing consumer data demand.
Tlebaldiyeva, Leila
core
Arthritis Care &Research, EarlyView.Systemic sclerosis (SSc) is a rare autoimmune disease defined by immune dysregulation, vasculopathy, and progressive fibrosis of the skin and internal organs. Despite advances in care, major complications such as interstitial lung disease (ILD) and myocardial involvement remain the leading causes of morbidity and mortality.
Cristiana Sieiro Santos +2 more
wiley +1 more source
Spectrum Sensing Using Software Defined Radio for Cognitive Radio Networks: A Survey
IEEE Access, 2022 Cognitive radio (CR) network has emerged as a potential solution to the under-utilization problem of the allocated radio spectrum, where spectrum sensing (SS) plays a key role to enable the coexistence between primary and secondary users.
Julio Manco +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley +1 more source
Adaptive Modulation for THz Communications under Hardware Impairments: Design and Analysis
, 2023 This letter addresses the impact of the hardware impairments on the data transmission over Terahertz (THz) band.
Mazen Hasna (14809220) +3 more
core +1 more source
Nondestructive Testing of Welded Composite Metal Foams
Advanced Engineering Materials, EarlyView.X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva +2 more
wiley +1 more source
Effects of Residual Hardware Impairments on Secure NOMA-Based Cooperative Systems
IEEE Access, 2020 Non-orthogonal multiple access (NOMA) has been proposed as a promising technology that is capable of improving the spectral efficiency of fifth-generation wireless networks and beyond.
Meiling Li +7 more
doaj +1 more source