Background The COVID-19 pandemic has exposed the vulnerability of healthcare services worldwide, especially in underdeveloped countries. There is a clear need to develop novel computer-assisted diagnosis tools provide rapid and cost-effective screening places where massive traditional testing not feasible. Lung ultrasound portable, easy disinfect, low cost non-invasive tool that can be used identify lung diseases. Computer-assisted analysis imagery relatively recent approach shown great...

The 5G network was developed to push the capabilities of wireless networks previously unseen performance limits, e.g., transmission rates several gigabits per second, latency less than a millisecond, and millions devices connected at same time. To meet these requirements, it is necessary access new spectrum (the so-called millimeter waves) use techniques such as Massive MIMO (Multiple-Input Multiple-Output) beamforming. This required design radio interface, known NR, that includes...

Cardiovascular diseases stand as the leading cause of mortality worldwide, underscoring urgent need for effective tools that enable early detection and monitoring at-risk patients. This study combines Artificial Intelligence (AI) techniques—specifically K-means clustering algorithm—alongside dimensionality reduction methods like Principal Component Analysis (PCA) Uniform Manifold Approximation Projection (UMAP) to identify patient groups with varying levels heart attack risk. We were using a...

The edge, the fog, cloud, and even end-user's devices play a key role in management of health sensitive content/data lifecycle. However, creation solutions including multiple applications executed by users environments (edge, cloud) to process repositories that, at same time, fulfilling non-functional requirements (NFRs) represents complex challenge for care organizations. This paper presents design, development, implementation an architectural model create, on-demand, edge-fog-cloud...

The segmentation of heart sound signals is the first step analysis for many applications such as computer-aided auscultation, classification or signal compression. In this paper we present a novel technique based on Matching Pursuit algorithm. We also show that Gabor atoms can provide highly effective representation audio signals. performance proposed method has been evaluated using dataset composed 151 attacks comprising several cardiac pathologies. reported algorithm showed high...

Vehicular ad hoc networks have been identified as a key technology for enabling safety and infotainment applications in the context of smart connected vehicles. In this sense, diverse approaches multi-hop broadcast protocols proposed to collect disseminate information through network. However, before vehicular fulfill their expected potential connect vehicles, several issues must be addressed. Among these issues, those related security are particular importance. article, main message...

Vehicular Ad Hoc Networks (VANETs) are considered by car manufacturers and the research community as enabling technology to radically improve safety, efficiency comfort of everyday driving. However, before VANET can fulfill all its expected potential, several difficulties must be addressed. One key issue arising when working with VANETs is complexity networking protocols compared those used traditional infrastructure networks. Therefore, proper design routing strategy becomes a main for...

Carrier aggregation (CA) is a promising technology that will allow IMT-Advanced system candidates to achieve spectrum bandwidths of up 100 MHz using available resource blocks (RB), even if these are fragmented. Implementation CA functionality managed through the use schedulers capable assigning multiple RBs user. When each RB handled individually, delay from user can affect quality service (QoS). In this article we develop an efficient scheduling strategy reduce assignment in systems make...

A method for the spectral analysis of convolutionally coded Markov-driven impulse radio (IR)-based ultrawideband (UWB) systems is introduced. Example applications in UWB include study pulse position modulation (PPM), pulse-amplitude (PAM), biorthogonal modulation, and pulse-shape combined with periodic (e.g., pseudorandom)/random time-hopping (TH), as well periodic/random direct-sequence (DS) multiplication. The effects random jitter attenuation are considered this analysis. final result...

Multi-unmanned aerial vehicle (multi-UAV) systems have become popular in applications such as precision agriculture, remote sensing, and pollution monitoring. Commonly, multi-UAV require to reach maintain a specific flight formation during mission execution. This can be achieved by using distributed UAV control strategy which each has controller whose function is calculate the actions for actuators that maintained. To perform this task, requires reliable timely exchange of information within...

Vehicular ad hoc networks (VANETs) have been identified as a key technology to enable intelligent transport systems (ITS), which are aimed radically improve the safety, comfort, and greenness of vehicles in road. However, order fully exploit VANETs potential, several issues must be addressed. Because high dynamic impairments wireless channel, one issue arising when working with is multihop dissemination broadcast packets for safety infotainment applications. In this paper reliable...

This paper presents a novel way to represent heart sound signals by using harmonic plus noise model (HNM). A set of time-frequency waveforms are selected the Matching Pursuit algorithm form part. The part is obtained after subtracting original signal and modeled as an autorregresive process linear predictive coding. sum both models provides highly accurate representation sounds. proposed has many potential applications such parametric low-bit rate coder, cardiac monitoring disease identification.

A microstrip antenna based on a travelling-wave radiator for circular polarization operating at 2.45 GHz is presented in this paper. quadrature hybrid coupler used to feed the allowing either left-hand or right-hand with good isolation between both modes. The proposed structure provides performance terms of bandwidth, gain, axial-ratio, and front-to-back ratio. circuit designed implemented over single layer panel mounting be readily integrated two-unit, more, cubesats.

The analytical, non-cyclostationary based, derivation of the power spectral density (PSD) a general time-hopping (TH) impulse radio (IR) ultra wideband (UWB) signal with pulse position modulation (PPM) is introduced. Our analysis suggests that PPM index influences overall shape signal's PSD in way can be useful for line suppression or diminishing maximum peak power. Finally, results are compared obtained from simulation, suggesting fast Fourier transform (FFT) based estimation methods...

The topic of spectral line suppression is major interest in the design pulse position modulated time hopping impulse radio ultra wideband communications systems. Previously pseudo-chaotic (PCTH) has been introduced to eliminate lines and improving bit error rates (BER). In this letter, new binary M-ary maximum free distance convolutional codes are showing similar power density characteristics as those obtained with PCTH better BER for hard soft decision decoding

This article proposes a framework to design and implement e- Health interventions in comprehensive manner. We draw on complexity science study the interplay of ecosystem, behavior interactions among its agents. provide platform estimate Quality Experience (QoE) assess relationship between technology human factors involved e-Health projects. Our aim is QoE ecosystems from perspective by adopting methodology that uses fuzzy logic ecosystem’s apply proposed remote diagnosis case means an...

ABSTRACT The topic of spectral line suppression is major importance when designing impulse radio ultrawideband (IR‐UWB) systems. presence lines in the power density (PSD) may limit maximum transmission to comply with UWB regulations, thus, affecting system performance. Although previous works have shown advantages IR‐UWB over fiber (UWBoF) implementations, PSD such systems has not been entirely addressed. This letter proposes a simple IR‐UWBoF using free (SLF) convolutional codes address...

In this paper the placement of base station within a cellular network is addressed as an optimization problem. A genetic algorithm used tool. This issue particularly important and critical in multi-service environment commonly found new generation communications systems. Particularly, goal presented work to minimize interference between stations. It shown that, by using so proposed weighted objective function, it possible specify locations, cell coverage terms traffic area, well overlap...

Ultra wide band (UWB) radio is thought to be a leading candidate for 4G communication systems and in particular short range low power personal (PCS). In this paper the periodogram-discrete Fourier transform (DFT) based spectral estimation techniques are reviewed relation application density (PSD) of pulse position modulated (PPM) time hopping (TH) impulse (IR) ultra wideband signals. Issues regarding line periodogram-DFT based, nonparametric methods highlighted.

The topic of spectral shaping is major interest in the design time hopping (TH) impulse radio (IR) ultra wideband (UWB) communications systems. In this letter novel rate 1/2 "spectral line free" convolutional codes for binary phase shift keying (BPSK) and quaternary biorthogonal pulse position modulated (Q-BOPPM) TH-IR UWB systems are introduced. When using these BPSK/Q-BOPPM systems, power density signal shows no lines, even when encoder input consists a non-uniform distributed data stream....