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1701
Pilot-assisted non-cyclic prefixed SFBC-OFDM
Published 2009-01-01“…Simulation results show that the proposed system based on the recursive algorithm achieves lower bit error rate (BER) and higher information data transmission rate than the traditional cyclic prefixed STBC-OFDM system with least square (LS) or iterative LS channel estimation algorithm.…”
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1702
An UAV-Assisted Edge Computing Resource Allocation Strategy for 5G Communication in IoT Environment
Published 2022-01-01“…Then, the genetic algorithm is improved by introducing a penalty function to solve this problem, in which selection, crossover, and mutation operations are iterated to obtain the optimal allocation strategy for computational resources. …”
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1703
ANALYSIS OF INFLUENCE OF LUBRICATING GAS ON STATIC CHARACTERISTICS OF THE FOIL HYDRODYNAMIC THRUST GAS BEARING
Published 2018-01-01“…Taking the new type of protuberant foil hydrodynamic thrust gas bearing as the research object,the finite element method and the Newton-Raphson iterative method are used to solve the numerical model of fluid-solid coupling by MATLAB software. …”
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1704
Resource optimization of secure energy efficiency based on mmWave massive MIMO-NOMA system with SWIPT
Published 2020-08-01“…The secure energy efficiency (SEE) problem was investigated for the millimeter wave (mmWave) multiple input multiple output (MIMO) non-orthogonal multiplex access (NOMA) systems with simultaneous wireless information and power transfer (SWIPT) in the presence of multiple legitimate receiver (LR) and an eavesdropper.LR was first grouped according to the channel state information and the cluster heads of each group were selected,then the LR of each cluster was served by each beam with NOMA and hybrid precoding technology.Based on this,a SEE maximization problem was formulated by optimizing power allocation and power splitting factors.The Dinkelbach algorithm and first order Taylor approximation were proposed to transform the original non-convex problem into a convex one,and an iterative algorithm was developed to solve it.Finally,numerical results show that the proposed scheme can effectively improve the SEE.…”
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1705
Dynamic bandwidth allocation algorithm based on transmission rate adaptation
Published 2014-05-01“…The adaptive bandwidth reallocation problem was formulated as an optimal problem and a dynamic optimal iterative procedure was used to adjust adaptively users' transmission rates to further maximize this utility function. …”
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1706
Research on BER performance of the OAM-SK FSO communication system with wavefront phase correction
Published 2022-05-01“…On the basis of Gerchberg-Saxton (GS) algorithm and angular-spectrum theory, an improved wavefront phase correction algorithm to the Laguerre-Gaussian (LG) beams was proposed for the orbital angular momentum-shift keying (OAM-SK) modulation-based free space optical (FSO) communication system under weak atmospheric turbulence.The light field distributions of the probe beam at transmitter and receiver were regarded as the input of the improved wavefront phase correction algorithm.And the correction phase mask was iteratively calculated to correct the distorted LG beams, thereby alleviating the inter-model crosstalk caused by atmospheric turbulence.Simulation results show that the improved wavefront phase correction algorithm is superior to the conditional GS algorithm.And with the increase of the refractive-index structure parameter, the bit error rate (BER) performance of the OAM-SK FSO communication system is significantly improved.…”
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1707
GPU-Accelerated Finite Element Method for Modelling Light Transport in Diffuse Optical Tomography
Published 2011-01-01“…The forward model is the computationally most expensive component of iterative methods for image reconstruction in diffuse optical tomography, and performance optimisation of the forward solver is therefore crucial for improving the efficiency of the solution of the inverse problem. …”
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1708
Response Modelling of a Burnt Clay Brick Wall Subjected to Air Blast Loading.
Published 2023“…Although modelling debris is beyond the scope of this study, standoff distance between the explosive and the wall has been used as a safety parameter. Iterations have been carried out for different wall model types using Abaqus software. …”
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1709
Stability Analysis and Optimal Control of a Vector-Borne Disease with Nonlinear Incidence
Published 2012-01-01“…Analytically the existence of the optimal control is established by the use of an optimal control technique and numerically it is solved by an iterative method. Numerical simulations and optimal analysis of the model show that restricted and proper use of control measures might considerably decrease the number of infected humans in a viable way.…”
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1710
Resource allocation algorithm for multi-beam LEO satellite based on decision performance evaluation
Published 2024-07-01“…The decision network parameters were adjusted based on evaluation network results to optimize resource allocation and update the evaluation network parameters. Through iterative optimization, the decision network achieved accurate predictions. …”
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1711
Design, build, test and flight of the world's fastest electric aircraft
Published 2022-12-01“…The blank sheet design of the ESS and powertrain allowed for an appropriately optimised solution, swiftly moving into physical testing allowed for rapid development of the system and opportunities to iterate. In the closing stages of the project, building, assembling, and ground testing the aircraft under one roof allowed for an effective cohesive and exciting crescendo before flight operation of the aircraft at MoD Boscombe Down.…”
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1712
Smoothing Estimation of Parameters in Censored Quantile Linear Regression Model
Published 2025-01-01“…Thus, the parameters of the regression model can be computed by using the gradient-based iterative algorithm. We demonstrate the convergence speed and asymptotic properties of the smoothing estimation for large samples in high dimensions. …”
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1713
Aerodynamic Performance of the Three-Dimensional Lumped Flexibility Bionic Hovering Wing
Published 2018-01-01“…We construct a novel three-dimensional bionic wing, which has lumped flexibility at the root, and develop an iterative coupling program to simulate the interaction between the flexible wing and fluid. …”
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1714
Improved global stability condition analysis for time-delay fast active queue management scalable transmission control protocol
Published 2019-05-01“…By analyzing the boundedness properties for solution trajectory of the fast active queue management scalable transmission control protocol model, the iterative relations of fast active queue management scalable transmission control protocol trajectory bounds were obtained. …”
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1715
A novel approach to the convergence analysis of chaotic dynamics in fractional order Chua’s attractor model employing fixed points
Published 2025-01-01“…We introduce novel fixed point theorems using some special contractions followed by graphical representations of the convergence behavior of the iterative process. The uniqueness and existence of fixed points are demonstrated through theoretical proofs and numerical simulations. …”
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1716
Viscous Flow over Nonlinearly Stretching Sheet with Effects of Viscous Dissipation
Published 2012-01-01“…The obtained equations, including nonlinear equation for the velocity field 𝑓 and differential equation by variable coefficient for the temperature field 𝜃, are solved numerically by using the fourth order of Runge-Kutta integration scheme accompanied by shooting technique with Newton-Raphson iteration method. The effect of various values of Prandtl number, Eckert number and nonlinear stretching parameter are studied. …”
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1717
The Development of LinguaBytes: An Interactive Tangible Play and Learning System to Stimulate the Language Development of Toddlers with Multiple Disabilities
Published 2008-01-01“…We use a Research-through-Design method, that is, an iterative process of developing subsequent experiential prototypes and then testing them in real-life settings, for example, a center for rehabilitation medicine. …”
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1718
An Efficient Curvature-Based Synthesis Methodology for Rotationally Symmetric Shaped Reflector Antennas
Published 2025-01-01“…Following this step, the corresponding curve is synthesized using the proposed iterative algorithm. This process of optimizing the curvature using B-spline polynomials offers the ability to better control the shape of a reflector with very few design variables. …”
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1719
Dynamic Decoupling Control Optimization for a Small-Scale Unmanned Helicopter
Published 2018-01-01“…In comparison with several different iterative search algorithms, an artificial bee colony (ABC) algorithm is selected to obtain the optimal control parameters. …”
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1720
Analyzing Axial Stress and Deformation of Tubular for Steam Injection Process in Deviated Wells Based on the Varied (T,P) Fields
Published 2013-01-01“…The axial load, the normal pressure, the friction, and four deformation lengths of tubular string are got ten by means of the dimensionless iterative interpolation algorithm. The basic data of the X Well, 1300 meters deep, are used for case history calculations. …”
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