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Telecom
Scopus
ISSN 2673-4001 · MDPI AG · 382 artikel di indeks
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Artikel Jurnal Teks lengkap
Toward Self-Sovereign Management of Subscriber Identities in 5G/6G Core Networks
5G systems have delivered on their promise of seamless connectivity and efficiency improvements since their global rollout began in 2020. However, maintaining subscriber identity privacy on the network remains a critical challenge. The 3GPP specifications define numerous identifiers associated with…
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Methodology for Studying the Level of Network Security of an IP PBX Server
This paper presents a methodology for studying the level of network security of VoIP platforms. The methodology is designed for VoIP platforms where the voice and video traffic passes through and are processed by the VoIP server itself, rather than being exchanged directly between the end devices…
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Li-Fi Range Challenge: Improvement and Optimization
This article discusses the fundamental limitations of Light Fidelity (Li-Fi) systems, an emerging visible light communication technology that is constrained by line-of-sight dependency and optical attenuation. Unlike existing adaptive modulation approaches that focus solely on improving signal…
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Sub-6-GHz 5G Large-Scale Path Loss Model for Shoemaker Rim F: Sensitivity to Transmitter Antenna Pattern
Future lunar missions require robust 5G communication links, and their design depends partly on path loss characterization, link budget planning inputs, and path prediction loss models tailored to the Moon’s environmental conditions. This work develops a site-specific 5G large-scale path loss model…
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Chaos Theory with AI Analisys in Network Scenarios
Modern TCP/IP networks are increasingly exposed to unpredictable conditions, both from the physical transmission medium and from malicious cyber threats. Traditional stochastic models often fail to capture the non-linear and highly sensitive nature of these disturbances. This work introduces a…
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Modeling the Presence of Humanoid Robots in Indoor Propagation Channels
The increasing deployment of humanoid robots in indoor environments such as smart factories, laboratories, offices, and hospitals poses new challenges to millimeter-wave wireless communication systems. Existing human body obstruction models, while effective at characterizing pedestrian-induced…
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Spectrum Sensing in Cognitive Radio Internet of Things Networks: A Comparative Analysis of Machine and Deep Learning Techniques
The proliferation of data-intensive IoT applications has created unprecedented demand for wireless spectrum, necessitating more efficient bandwidth management. Spectrum sensing allows unlicensed secondary users to dynamically access idle channels assigned to primary users. However, traditional…
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Investigating the Diurnal Variations in Radio Refractivity and Its Implications for Radio Communications over South Africa
The metric for probing the variation in atmospheric refractive indices is radio refractivity (RR), which is a key factor in determining the losses associated with a radio signal as it traverses from one atmospheric layer to another. Ten years (2015–2024) of surface hourly data of temperature (K)…
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Recent Advances in Applications and Performance Improvement Schemes in Wireless Communication
To this date, the Fifth Generation (5G) of mobile communications has been deployed and has opened a great number of opportunities by increasing transmission rates (partialy through the use of MIMO systems), decreasing latency, providing the amount of bandwidth required for video services, Virual…
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An Evolutionary Game Theory and Reinforcement Learning-Based Security Protocol for Intermittently Connected Wireless Networks
Intermittently Connected Wireless Networks (ICWNs) are characterized by dynamic node mobility and the absence of persistent end-to-end paths, making them highly susceptible to security threats. This paper proposes a novel secure routing protocol, called the Evolutionary Game Theoretic model with…
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Reconfigurable Wireless Channel Optimization and Low-Complexity Control Methods Driven by Intelligent Metasurfaces 2.0
With the evolution of Reconfigurable Intelligent Surface (RIS) technology, its potential for dynamically optimizing wireless channels has garnered significant attention. However, existing methods still face challenges in real-time control in complex environments due to high computational…
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Application of Homomorphic Encryption for a Secure-by-Design Approach to Protect the Confidentiality of Data in Proficiency Testing and Interlaboratory Comparisons
Accredited laboratories participating in Proficiency Testing (PT) and Interlaboratory Comparison (ILC) typically submit measurement results (and associated uncertainties) to an organizer for performance evaluation using statistics such as the z-score and the En value. This requirement can undermine…
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Design and Voltage-Controlled Reconfigurability of an Interdigital Bandpass Filter
This paper presents the design of a highly reconfigurable interdigital bandpass filter (BPF) developed through a three-stage design approach. In the first stage, the influence of four low-loss dielectric substrates on the filter response is systematically analyzed to identify the optimal…
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Analysis of Security–Reliability Tradeoff of Two-Way Hybrid Satellite–Terrestrial Relay Schemes Using Fountain Codes, Successive Interference Cancelation, Digital Network Coding, Partial Relay Selection, and Cooperative Jamming
In this paper, we propose a two-way hybrid satellite–terrestrial relay scheme employing Fountain codes (FCs). In the proposed model, a satellite and a ground user exchange data through a group of terrestrial relay stations, in the presence of an eavesdropper. In the first phase, the satellite and…
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Low Internet Penetration in Sub-Saharan Africa and the Role of LEO Satellites in Addressing the Issue
Sub-Saharan Africa (SSA), with an estimated population of 1.243 billion people as of December 2024, had the lowest mobile Internet penetration in the world at 29%, significantly below the global average of 58%. Moreover, SSA also had the lowest mobile data traffic per active smartphone, averaging 5…
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Characterization of a Bow-Tie Antenna Integrated UTC-Photodiode on Silicon Carbide for Terahertz Wave Generation
This work presents the fabrication and characterization of a bow-tie antenna integrated uni-traveling carrier photodiode (UTC-PD) on a silicon carbide (SiC) substrate for efficient terahertz (THz) wave generation. The proposed device exploits the superior thermal conductivity and mechanical…
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Trustworthiness in Resource-Constrained IoT: Review and Taxonomy of Privacy-Enhancing Technologies and Anomaly Detection
Resource-constrained Internet of Things (IoT) devices are increasingly deployed in critical domains but remain vulnerable to stealthy attacks that can bypass conventional defenses. At the same time, privacy constraints limit centralized data collection and processing, complicating anomaly…
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Implicit Quiescent Solitons in Optical Metamaterials with Nonlinear Chromatic Dispersion and an Array of Self-Phase Modulation Structures with Generalized Temporal Evolution by Lie Symmetry
The current paper retrieves implicit quiescent soliton solutions to optical metamaterials with nonlinear chromatic dispersion with generalized temporal evolution. Seven forms of self-phase modulation structures, as proposed by Kudryashov with time, are taken up. The implemented integration…
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Leveraging 5G RedCap and Spiking Neural Networks for Energy Efficiency in Edge Devices
This work presents an energy-efficient implementation of Unmanned Aerial Vehicle (UAV)-based systems over 5G networks with on-board accelerated processing capabilities and provides a preliminary evaluation of the integrated solution. The study is a two-fold comparative analysis focused on…
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Intelligent Vehicle Repeater for Satellite Networks: A Promising Device for Tourists and Explorers Without Terrestrial Networks
Existing vehicle-mounted satellite terminals primarily rely on mechanical or purely analog electronically steered antennas. They lack protocol-level relay capability and usually provide only short-range hotspot connectivity. These limitations make it difficult for such systems to deliver stable…