Browsing by Keywords "Iterative methods"
Now showing items 120 of 79

Adaptive power control and MMSE interference suppression
(1998)Power control algorithms assume that the receiver structure is fixed and iteratively update the transmit powers of the users to provide acceptable quality of service while minimizing the total transmitter power. Multiuser ... 
Analyzing large sparse Markov chains of Kronecker products
(2009)Kronecker products are used to define the underlying Markov chain (MC) in various modeling formalisms, including compositional Markovian models, hierarchical Markovian models, and stochastic process algebras. The motivation ... 
Autotuning similarity search algorithms on multicore architectures
(2013)In recent times, large highdimensional datasets have become ubiquitous. Video and image repositories, financial, and sensor data are just a few examples of such datasets in practice. Many applications that use such datasets ... 
Combinedfield solution of composite geometries involving open and closed conducting surfaces
(2005)Combinedfield integral equation (CFIE) is modified and generalized to formulate the electromagnetic problems of composite geometries involving both open and closed conducting surfaces. These problems are customarily ... 
Comparisons of FMM implementations employing different formulations and iterative solvers
(2003)The implementation of multilevel fast multipole algorithm (MLFMA) requires the consideration of several parameters. The preferred combination of the parameters given is not trivially obvious and requires a careful ... 
Complex signal recovery from fractional Fourier transform intensities
(IEEE, 200404)The problem of recovering a complex signal from the magnitudes of two of its fractional Fourier transforms is addressed This corresponds to phase retrieval from the transverse intensity profiles of an optical field at two ... 
A complexityreduced ML parametric signal reconstruction method
(2011)The problem of component estimation from a multicomponent signal in additive white Gaussian noise is considered. A parametric ML approach, where all components are represented as a multiplication of a polynomial amplitude ... 
Compressive sensingbased robust offthegrid stretch processing
(Institution of Engineering and Technology, 2017)Classical stretch processing (SP) obtains high range resolution by compressing large bandwidth signals with narrowband receivers using lower rate analoguetodigital converters. SP achieves the resolution of the large ... 
Contamination of the accuracy of the combinedfield integral equation with the discretization error of the magneticfield integral equation
(Institute of Electrical and Electronics Engineers, 2009)We investigate the accuracy of the combinedfield integral equation (CFIE) discretized with the RaoWiltonGlisson (RWG) basis functions for the solution of scattering and radiation problems involving threedimensional ... 
Data imputation through the identification of local anomalies
(Institute of Electrical and Electronics Engineers Inc., 2015)We introduce a comprehensive and statistical framework in a model free setting for a complete treatment of localized data corruptions due to severe noise sources, e.g., an occluder in the case of a visual recording. Within ... 
Deconvolution using projections onto the epigraph set of a convex cost function
(IEEE Computer Society, 2014)A new deconvolution algorithm based on making orthogonal projections onto the epigraph set of a convex cost function is presented. In this algorithm, the dimension of the minimization problem is lifted by one and sets ... 
Denoising using projections onto the epigraph set of convex cost functions
(Institute of Electrical and Electronics Engineers Inc., 2014)A new denoising algorithm based on orthogonal projections onto the epigraph set of a convex cost function is presented. In this algorithm, the dimension of the minimization problem is lifted by one and feasibility sets ... 
Design and analysis of a modular learning based crosscoupled control algorithm for multiaxis precision positioning systems
(Institute of Control, Robotics and Systems, 2016)Increasing demand for micro/nanotechnology related equipment resulted in growing interest for precision positioning systems. In this paper a modular controller combining crosscoupled control and iterative learning control ... 
Downlink beamforming under individual SINR and per antenna power constraints
(2007)In this paper we consider the problem of finding the optimum beamforming vectors for the downlink of a multiuser system, where there are individual signal to interference plus noise ratio (SINR) targets for each user. ... 
Efficient analysis of large phased arrays using iterative MoM with DFTbased acceleration algorithm
(John Wiley & Sons, Inc., 2003)A discrete Fourier transform (DFT)based iterative method of moments (IMoM) algorithm is developed to provide an O(Ntot) computational complexity and memory storages for the efficient analysis of electromagnetic ... 
Electromagnetic imaging of threedimensional dielectric objects with Newton minimization
(Institute of Electrical and Electronics Engineers Inc., 2014)We present a general framework for detecting the shape and electrical properties of unknown objects by using the Newton minimization approach for solving inversescattering problems. This procedure is performed by evolving ... 
Encapsulating multiple communicationcost metrics in partitioning sparse rectangular matrices for parallel matrixvector multiplies
(SIAM, 2004)This paper addresses the problem of onedimensional partitioning of structurally unsymmetric square and rectangular sparse matrices for parallel matrixvector and matrixtransposevector multiplies. The objective is to ... 
Equiripple FIR filter design by the FFT algorithm
(Institute of Electrical and Electronics Engineers, 199703)The fast Fourier transform (FFT) algorithm has been used in a variety of applications in signal and image processing. In this article, a simple procedure for designing finiteextent impulse response (FIR) discretetime ... 
Expectation maximization based matching pursuit
(2012)A novel expectation maximization based matching pursuit (EMMP) algorithm is presented. The method uses the measurements as the incomplete data and obtain the complete data which corresponds to the sparse solution using an ... 
Extending the applicability of the combinedfield integral equation to geometries containing open surfaces
(Institute of Electrical and Electronics Engineers, 2006)In this letter, we consider the solution of large electromagnetics problems of composite structures with coexisting open and closed conductors. By modifying the construction of the combinedfield integral equation (CFIE), ...