A5011049973- Chaos control and synchronization
- Advancements in PLL and VCO Technologies
- stochastic dynamics and bifurcation
- Nonlinear Dynamics and Pattern Formation
- Advanced MIMO Systems Optimization
- Semiconductor Lasers and Optical Devices
- Cooperative Communication and Network Coding
- Cognitive Radio Networks and Spectrum Sensing
- Analog and Mixed-Signal Circuit Design
- Optical Network Technologies
- Photonic and Optical Devices
- Iterative Learning Control Systems
- Image and Signal Denoising Methods
- Advanced Algorithms and Applications
- Neural Networks and Applications
- Energy Harvesting in Wireless Networks
- Information Systems Education and Curriculum Development
- Engineering Education and Curriculum Development
- Power System Optimization and Stability
- Experimental Learning in Engineering
- ECG Monitoring and Analysis
- Fuzzy Logic and Control Systems
- Data Management and Algorithms
- Lightning and Electromagnetic Phenomena
- Wireless Power Transfer Systems
Yarmouk University
2008-2023
Al Ain University
2019-2023
Nottingham Trent University
2022
Universitat Politècnica de València
2022
Brunel University of London
2022
Edge Technologies (United States)
2021
Cardiff University
2021
University of Bari Aldo Moro
2021
South African National Biodiversity Institute
2021
University of Derby
2021
The adjacent channel interference (ACI) resulting from imperfect filtering can severely degrade the performance of any wireless communication system. Despite this fact, most previously proposed medium access control (MAC) protocols for cognitive radio networks (CRNs) were designed while ignoring effects ACI (assuming ideal filtering). effect be reduced by introducing guard bands (GBs). However, solution comes at expense degrading spectrum efficiency. In paper, we develop an efficient...
The paper presents an empirical exploration of google.com query stream language modeling. We describe the normalization typed resulting in out-of-vocabulary (OoV) rates below 1% for a one million word vocabulary. present comprehensive set experiments that guided design decisions voice search service. In process we re-discovered less known interaction between Kneser-Ney smoothing and entropy pruning, found evidence hints at non-stationarity stream, as well strong dependence on various English...
A new hybrid two-stage electrocardiogram (ECG) signal compression method based on the modified discrete cosine transform (MDCT) and wavelet (DWT) is proposed. The ECG partitioned into blocks MDCT applied to each block decorrelate spectral information. Then, DWT resulting coefficients. Removing redundancy achieved by compressing subordinate components more than dominant components. coefficients are then thresholded compressed using energy packing binary-significant map coding technique for...
In this paper, a nonlinear backstepping controller has been designed to control bifurcation as well incipient chaos that experienced in the RCLSJ (shunted resistive-capacitive-inductance) Josephson-Junction. The results show system, without controller, dangerous Hopf point lead chaotic behavior. For certain values of external direct current (I <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> ), system becomes chaotic. On other hand,...
In this paper, a combined Fractal and Wavelet (CFW) compression algorithm targeting x-ray angiogram images is proposed. Initially, the image decomposed using wavelet transform. The smoothness of low frequency part appears as an approximation with higher self similarities, therefore, it coded fractal coding technique. However, rest adaptive thresholding This model implemented its performance compared best performances available published algorithms. A data set containing 1000 angiograms used...
This article presents the methodology and results of curriculum review Masters Science programme in Wireless Communications offered by Telecommunications Engineering Department at Yarmouk University Jordan. The is based on expert opinion collected through questionnaires meetings about focuses two main aspects: first relevance to needs local regional telecommunications industry second comparability similar programmes EU. Through an extensive analysis data, a set recommendations for...
Google Fusion Tables aims to support an ecosystem of structured data on the Web by providing a tool for managing and visualizing one hand, searching exploring other. This paper describes few recent developments in our efforts further ecosystem.
The chaos induced in a new type of phase locked loop (PLL) having second-order filter is investigated. system under consideration modeled as third-order autonomous with sinusoidal detector characteristics. modern nonlinear theory such bifurcation and applied to PLL. A method developed quantitatively study the bifurcations that occur this showed PLL experienced Hopf point well chaotic behaviour. multiple scales used find normal form near point. found be supercritical one.
In this paper, we propose an efficient algorithm to solve the energy allocation problem for MIMO two-relay system, exploit advantages of distribution over space and scattering maximize data rate parallel channels system. Our proposed technique can be used improve performance existing wireless networks systems that use relays. When using a point connection, water-filling was previously employed independent channels. Because gains are possible ordered just in one dimension, approach clearly...
In this paper, we present a novel guard-band (GB)-aware channel assignment mechanism that attempts at maximization the achieved network throughput by improving spectrum utilization. Unlike most of previously proposed GB-aware algorithms perform sequentially, performs and power for multiple cognitive radio (CR) transmissions same time (the so-called batch approach). Batching enables concurrent CR links, which consequently allows data transmissions. The approach can be realized introducing an...
A definition is given for the half-plane pull-in range Ω2 of a second-order PLL with imperfect integrator. formula approximating not available. However, an iterative computational algorithm presented computing Ω2, and it applied to simple example.
Abstract Traditional tools used in education, are increasingly more complemented with computer based Instructional software. This paper presents an interactive approach for teaching the Digital Signal Processing (DSP) course. The effect of Software on achievement students subject DSP is compared to conventional method. © 2009 Wiley Periodicals, Inc. Comput Appl Eng Educ 18: 703–708, 2010; View this article online at wileyonlinelibrary.com ; DOI 10.1002/cae.20275
Analysis of bifurcation second-order analog phase locked loop (PLL) with tanlock and sawtooth detectors is investigated. Both qualitative quantitative analyses are carried out. Qualitatively, the basin boundaries attractors were constructed by plotting stable unstable manifolds system. The show that PLL under consideration for certain parameters has a separatrix cycle which terminates limit (out-of-lock state) pulls-in. This behavior known in literature as homoclinic value parameter where...
The nonlinear dynamics of a third-order phase locked loop (PLL) reveals chaotic behavior for range values parameter. Using bifurcation theory, it has been verified through mathematical analysis and simulation that such pulls the PLL to an undesirable unstable out-of-lock state. This paper aims control drive in-lock state, by applying controller based on sliding mode theory under consideration. design process involves two phases. In first phase, surface is designed motion meets...
This paper presents a curriculum design approach for Masters Programme in Telecommunications Management based on demand data obtained from surveying the needs of potential students proposed programme. Through online surveys disseminated at telecom companies Jordan, it was possible to measure such programme and determine required contents specifications. The is definition outcomes using house quality (HOQ) list courses Surveyed competencies are mapped long HOQ order importance each these...
An error-function analytical expression describing compositional grading in a 850 nm AlGaAs/GaAs top-emitting oxide confined vertical cavity surface emitting laser has been derived. Results are presented showing that the optical properties of considered device utilizing proposed scheme superior over other schemes found literature. The advantages lies its ability and flexibility controlling degree unlike reported literature were profile is dependent on function used.
In this paper, a Galerkin-based method is applied to single machine infinite busbar (SMIB) power system. The computes the separatrix cycle and exact values for input mechanical at which limit bifurcates from cycle. first part of algorithm approximates by truncated Fourier series employs N harmonics, where user-specified. second finds value utilizing fact that must approach saddle point. simple example with = 3. Data given relates damping coefficient power.
<span lang="EN-US">It is known that a shunted nonlinear resistive-capacitive-inductance Josephson-junction (RCLSJ) model has chaotic attractor. This attractor created as result of Hopf bifurcation occurs when certain direct current (DC) applied to one the junction terminals. prevents system from reaching phase-locked state and hence degrade performance junction. paper aims at controlling taming this induced in pulling state. To achieve task, sliding mode controller proposed. The design...