1.393 hasil
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Journal of Telecommunications and Information Technology
Scopus
ISSN 1899-8852 · National Institute of Telecommunications · 1.393 artikel di indeks
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Artikel Jurnal
Comparative Analysis of Classifiers for Higher-order Statistics-based Modulation Recognition in Cooperative STBC-OFDM
Precise classification of modulation in cooperative relaying networks remains challenging in the presence of carrier frequency offset (CFO) and imperfect channel state information (CSI). This paper conducts a comprehensive comparative analysis of automatic modulation classification (AMC) methods…
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Artikel Jurnal
Priority-aware Radio Resource Scheduling for mMTC in 5G Networks - Balancing Efficiency and Fairness
Efficient and fair resource allocation for massive machine-type communication remains a significant challenge in 5G New Radio networks due to the diverse quality of service requirements and dynamic traffic patterns. This paper proposes a priority-aware uplink scheduling (PAUS) algorithm that…
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Artikel Jurnal
DOA Estimation of Linear Dipole Arrays Based on Horse Herd Optimization Algorithm
Subspace-based direction of arrival (DOA) estimation algorithms, such as MUSIC and ESPRIT, are designed for adaptive smart antenna arrays. However, these subspace methods require a large number of signal snapshots and sufficient angular separation between signals to provide an accurate DOA…
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Artikel Jurnal Teks lengkap
A Spectral Efficiency Design for Active IRS-assisted SWIPT System via Semidefinite Relaxation Method
Active intelligent reflecting surfaces (IRS) with phase-shift and amplifier capabilities have arisen as a solution relied upon to improve spectral/energy efficiency of wireless systems, as they outperform conventional passive techniques/without IRS assistance. In this work, the simultaneous…
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Artikel Jurnal
Two-way Planar Array Radar with Diamond- and X-shaped Configurations for Sidelobe Suppression
The undesirable sidelobes in the pattern of a two-way radar antenna array is usually minimized by thinning several elements in the receive or transmit arrays. The thinning process is performed randomly on all array elements by using an optimization algorithm, with the computation time being…
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Artikel Jurnal
Fairness-aware Joint Pattern and Power Design for Downlink PDMA Systems
Pattern division multiple access (PDMA) is recognized as a promising non-orthogonal multiple access technique for overloaded wireless systems, capable of being used for multiplexing multiple users over a limited set of resources. However, the real performance of PDMA is determined not only by the…
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Artikel Jurnal
Hybrid Feature Selection Framework for Machine Learning-based Bot Detection on Social Media
Nowadays, social media impact all aspects of our lives, making us vulnerable to fraud and scams. Bots are believed to be the most prevalent form of malware that may be found in social media environments. New detection methods are required to keep up with the pace of their continuous advancement…
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Artikel Jurnal
Network Threat Detection in IaaS Environments Based on Flow Log Data
The rapid growth of cloud services has led security monitoring to rely mainly on limited telemetry data furnished by cloud service providers. Flow logs, such as VPC Flow Logs in Amazon Web Services, are one of the key sources of information about network traffic in IaaS environments. In this study…
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Artikel Jurnal
FEC Hybrid Method Based on Reed–Solomon Codes for Transmitting Video Signal Over Limited Bandwidth and High Loss Rate Channels
The paper considers the adaptive forward error correction (FEC) technique for real-time video transmission over a feedback-free channel with limited bandwidth and non-stationary interference. A hybrid Reed-Solomon coding method is proposed in GF(2\textsuperscript{8}), combining differentiated…
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Artikel Jurnal
A Spatio-temporal Residual Attention Network with SNR-adaptive Weighting for MIMO-OFDM Channel Estimation
This paper addresses channel estimation in MIMO-OFDM systems under time-varying Rician fading and spatially correlated propagation conditions, where reliable coherent detection requires accurate channel state information. Although least-squares (LS) estimation is simple and computationally…
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Artikel Jurnal
Energy-delay Aware Data Collection in Mobile Sink-based Wireless Sensor Networks with Optimized Visiting Points and Two-level Data Aggregation
This study addresses data collection challenges in wireless sensor networks (WSNs) employing mobile sinks (MSs). Although MSs improve flexibility and scalability, achieving balanced optimization of data collection delay and energy consumption remains challenging, as minimizing one objective…
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Artikel Jurnal
Harmonic Trust Spectrum Modeling for Cognitive Radio Intrusion Detection
Cognitive radio networks (CRNs) are highly vulnerable to spectrum spoofing, PU emulation (PUE), and harmonic RF manipulation attacks, which significantly degrade dynamic spectrum access reliability and communication security. This paper proposes a harmonic trust spectrum modeling framework for…
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Artikel Jurnal
A Lightweight Adaptive Holding-time Policy for Clustered Wireless Sensor Networks
In clustered wireless sensor networks (WSNs), re-shaping the topology can redistribute cluster head load, but each such task consumes energy. This paper studies the refresh timing problem in static clustered WSNs, where the controller decides not only whether to rebuild the topology but also…
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Artikel Jurnal
Analyzing Performance of Eigenvalue-based Spectrum Sensing within LoRaCog Framework
The CR technology enhances spectrum utilization by allowing access to unused licensed channels, while spectrum sensing allows secondary users to verify channel availability before the transmission. This study relies on the LoRaCog framework, a solution integrating the CR technology with LoRa LPWAN…
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Artikel Jurnal
Dual Wide-band Microstrip Antenna for Wireless Communication Systems
This article presents the design of a compact dual wide-band microstrip antenna. It also describes the simulation of its operation and provides the results of electrical parameter and radiation characteristics measurements. The designed antenna is intended to operate in two ranges. The first covers…
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Artikel Jurnal
Outage Probability in RIS-assisted LoRa Networks with Hardware Impairments and Asymmetric Channels
This paper investigates the performance of reconfigurable intelligent surface (RIS)-assisted LoRa networks. Specifically, we consider a LoRa system enhanced by RIS under the influence of hardware impairments and asymmetric channel conditions. A closed-form expression for the outage probability at…
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Artikel Jurnal
Determining Speed and Reliability of Transmitting Indicator Information in Residual Class Systems
The article is devoted to the analysis and assessment of the efficiency of fiber optic systems whose primary objective is to transmit data. The efficiency of information transmission systems depends on numerous indicators, such as interference immunity, speed, energy efficiency, cost, development…
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Artikel Jurnal
Iterative Beamspace Covariance Refinement for Precise DOA Estimation in Uniform Circular Arrays under Low-snapshot Conditions
Uniform circular arrays (UCA) provide 360° angular coverage and uniform directional response, making them preferable for direction-of-arrival estimation (DOAE). This paper proposes an iterative enhancement technique for root-MUSIC-based methods under UCA configurations, particularly effective in…
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Artikel Jurnal
Optimizing Circular Arrays with Concentric Subarray Rings for Wireless Power Transmission Applications
The emerging wireless power transmission technology creates new opportunities in numerous real-world applications such as wireless charging systems, robots, and aerospace solutions. This paper introduces an optimized method for designing transmit antenna arrays which may be used for long-distance…
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