Browsing Network & Communication by Title
Now showing items 29-48 of 102
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Design-Oriented Two-Stage Surrogate Modeling of Miniaturized Microstrip Circuits with Dimensionality Reduction
(Institute of Electrical and Electronics Engineers Inc., 2020)Contemporary microwave design heavily relies on full-wave electromagnetic (EM) simulation tools. This is especially the case for miniaturized devices where EM cross-coupling effects cannot be adequately accounted for using ... -
Deterministic modeling of 5g millimeter-wave communication in an underground mine tunnel Open Access
(IEEE., 2019)This paper presents broadband simulations and measurements of Millimeter-Waves (mm-wave) propagation in a rugged underground mine environment. Mathematical formulation was carried out in the framework of Uniform Theory of ... -
Dielectric resonator antenna with reconfigurable polarization states
(John Wiley and Sons Inc., 2020)This study presents a simple and low-profile cylindrical dielectric resonator antenna (CDRA) for the fifth-generation (5G) band (3.5 GHz) with switchable polarization. The antenna can operate with linear or circular ... -
Dynamic resource allocation for opportunistic software-defined IoT networks: Stochastic optimization framework
(Institute of Advanced Engineering and Science, 2020)Several wireless technologies have recently emerged to enable efficient and scalable Internet-of-Things (IoT) networking. Cognitive radio (CR) technology, enabled by software-defined radios, is considered one of the main ... -
An Efficient Routing Scheme for Intrabody Nanonetworks Using Artificial Bee Colony Algorithm
(IEEE, 2020)An Intrabody Nanonetwork (IBNN) is constituted by nanoscale devices that are implanted inside the human body for monitoring of physiological parameters for disease diagnosis and treatment purposes. The extraordinary accuracy ... -
An eigen-approach for joint estimation of direction-of-arrival and frequency of an unknown number of signals
(Scientific Research Support Fund of Jordan, 2020)An accurate method for estimating the direction-of-arrival (DOA) jointly with the frequencies of an unknown number of source signals is proposed using the Eigen-approach. Using the minimum eigenvalues of the autocorrelation ... -
Electromagnetic bandgap backed millimeter-wave MIMO antenna for wearable applications
(IEEE., 2019)A millimeter-wave (mm-Wave) multiple input multiple output (MIMO) antenna operating at 24 GHz (ISM band), suitable for wearable applications, is proposed in this paper. The proposed MIMO antenna consists of two elements, ... -
Energy-Efficient Bi-Objective Optimization Based on the Moth–Flame Algorithm for Cluster Head Selection in a Wireless Sensor Network
(MDPI, 2023)Designing an efficient wireless sensor network (WSN) system is considered a challenging problem due to the limited energy supply per sensor node. In this paper, the performance of several bi-objective optimization algorithms ... -
Enhanced-performance circularly polarized MIMO antenna with polarization/pattern diversity
(Institute of Electrical and Electronics Engineers (IEEE ), 2020)Design of a compact wideband circularly polarized (CP) multiple-input multiple-output (MIMO) antenna with polarization diversity is proposed and characterized for off-body communication. The antenna is based on a simple ... -
Expedited re-design of multi-band passive microwave circuits using orthogonal scaling directions and gradient-based tuning
(Nature Research, 2024-12)Geometry scaling of microwave circuits is an essential but challenging task. In particular, the employment of a given passive structure in a different application area often requires re-adjustment of the operating ... -
Expedited Yield Optimization of Narrow-and Multi-Band Antennas Using Performance-Driven Surrogates
(Institute of Electrical and Electronics Engineers Inc., 2020)Uncertainty quantification is an important aspect of engineering design, also pertaining to the development and performance evaluation of antenna systems. Manufacturing tolerances as well as other types of uncertainties, ... -
Experimental Evaluation of Trilateration-Based Outdoor Localization with LoRaWAN
(Tech Science Press, 2023)Long Range Wide Area Network (LoRaWAN) in the Internet of Things (IoT) domain has been the subject of interest for researchers. There is an increasing demand to localize these IoT devices using LoRaWAN due to the quickly ... -
Exploiting device-to-device (D2D) transmission strategy for throughput enhancement in WLANs
(Springer, 2022)The IEEE 802.11 MAC protocols have been implemented in many wireless ad hoc and infrastructure networks. Most of the IEEE 802.11-based networks adopt a one-hop transmission mechanism (the source and destination communicate ... -
Fabrication of a large scale metasurface with high resolution and enhanced absorption
(Optica Publishing Group (formerly OSA), 2023)Plasmonic metasurface nanostructures have the potential to enable nonlinear optical functionality in metasurfaces by reducing power operating thresholds and enabling ultra-thin subwavelength devices. However, low absorption ... -
A Formula for Successful Transmission Probability in Opportunistic Networks Under Memory-time Correlated Channel Availability
(Institute of Electrical and Electronics Engineers Inc., 2023)Dynamic Spectrum Access (DSA) technology in wireless Cognitive Radio Networks (CRNs) provides opportunistic access for unlicensed users, also known as Secondary Users (SUs), which can offer huge bandwidth to enable future ... -
Frequency and pattern reconfigurable antenna for emerging wireless communication systems
(MDPI AG., 2019)A printed and minimal size antenna having the functionality of frequency shifting as well as pattern reconfigurability is presented in this work. The antenna proposed in this work consists of three switches. Switch 1 is a ... -
A frequency and radiation pattern combo-reconfigurable novel antenna for 5g applications and beyond
(MDPI AG., 2020)This paper presents a novel combo-reconfigurable architecture for the frequency and radiation patterning of a novel antenna system for future fifth-generation (5G) millimeter-wave mobile communication. The tuning system ... -
A frequency reconfigurable U-shaped antenna for dual-band WIMAX/WLAN systems
(Electromagnetics Academy, 2018)A novel frequency reconfigurable antenna is proposed for WiMAX and WLAN applications. It has a simple structure and compact size of 0.44λg × 0.37λg. The proposed approach is based on utilizing of a double planar U-shaped ... -
FUBA: A fuzzy-based unmanned aerial vehicle behaviour analytics for trust management in flying ad-hoc networks
(John Wiley and Sons Inc, 2023)Flying Ad-Hoc Network (FANET) is a promising ad hoc networking paradigm that can offer new added value services in military and civilian applications. Typically, it incorporates a group of Unmanned Aerial Vehicles (UAVs), ... -
General model for best feature extraction of EEG using discrete wavelet transform wavelet family and differential evolution
(SAGE Publications Ltd, 2020)Wavelet family and differential evolution are proposed for categorization of epilepsy cases based on electroencephalogram (EEG) signals. Discrete wavelet transform is widely used in feature extraction step because it ...