Search Results - "Hero, A. O."

Secure space-time communication by Hero, A.O.

“…Network security is important for information protection in open, secure, or covert communications. One such requirement is to achieve high-rate communications…”
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Partial update LMS algorithms by Godavarti, M., Hero, A.O.

“…Partial updating of LMS filter coefficients is an effective method for reducing computational load and power consumption in adaptive filter implementations…”
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Multitarget tracking using the joint multitarget probability density by Kreucher, C., Kastella, K., Hero, A.O.

“…This work addresses the problem of tracking multiple moving targets by recursively estimating the joint multitarget probability density (JMPD). Estimation of…”
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Penalized maximum-likelihood image reconstruction using space-alternating generalized EM algorithms by Fessler, J.A., Hero, A.O.

“…Most expectation-maximization (EM) type algorithms for penalized maximum-likelihood image reconstruction converge slowly, particularly when one incorporates…”
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Unicast-based inference of network link delay distributions with finite mixture models by Meng-Fu Shih, Hero, A.O.

“…Providers of high quality-of-service over telecommunication networks require accurate methods for remote measurement of link-level performance. Recent research…”
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Ensemble Estimators for Multivariate Entropy Estimation by Sricharan, K., Wei, D., Hero, A. O.

“…The problem of estimation of density functionals like entropy and mutual information has received much attention in the statistics and information theory…”
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Exploring estimator bias-variance tradeoffs using the uniform CR bound by Hero, A.O., Fessler, J.A., Usman, M.

“…We introduce a plane, which we call the delta-sigma plane, that is indexed by the norm of the estimator bias gradient and the variance of the estimator. The…”
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Relative location estimation in wireless sensor networks by Patwari, N., Hero, A.O., Perkins, M., Correal, N.S., O'Dea, R.J.

“…Self-configuration in wireless sensor networks is a general class of estimation problems that we study via the Cramer-Rao bound (CRB). Specifically, we…”
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High-rate vector quantization for detection by Gupta, R., Hero, A.O.

“…We investigate high-rate quantization for various detection and reconstruction loss criteria. A new distortion measure is introduced which accounts for global…”
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Comparison of GLR and invariant detectors under structured clutter covariance by Hyung Soo Kim, Hero, A.O.

“…This paper addresses a target detection problem in radar imaging for which the covariance matrix of unknown Gaussian clutter has block diagonal structure. This…”
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Lower bounds for parametric estimation with constraints by Gorman, J.D., Hero, A.O.

“…A Chapman-Robbins form of the Barankin bound is used to derive a multiparameter Cramer-Rao (CR) type lower bound on estimator error covariance when the…”
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Geodesic entropic graphs for dimension and entropy estimation in manifold learning by Costa, J.A., Hero, A.O.

“…In the manifold learning problem, one seeks to discover a smooth low dimensional surface, i.e., a manifold embedded in a higher dimensional linear vector…”
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Tree-structured nonlinear signal modeling and prediction by Michel, O.J.J., Hero, A.O., Badel, A.E.

“…We develop a regression tree approach to identification and prediction of signals that evolve according to an unknown nonlinear state space model. In this…”
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Cardiac motion estimation by joint alignment of tagged MRI sequences by Oubel, E., De Craene, M., Hero, A.O., Pourmorteza, A., Huguet, M., Avegliano, G., Bijnens, B.H., Frangi, A.F.

“…[Display omitted] ► We tackle the recovery of dense myocardial deformations and strains from tagged MRI. ► k-Nearest Neighbors Graphs to assess the joint…”
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Optimal simultaneous detection and estimation under a false alarm constraint by Baygun, B., Hero, A.O.

“…This paper addresses the problem of finite sample simultaneous detection and estimation which arises when estimation of signal parameters is desired but signal…”
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Cutoff rate and signal design for the quasi-static Rayleigh-fading space-time channel by Hero, A.O., Marzetta, T.L.

“…We consider the computational cutoff rate and its implications on signal design for the complex quasi-static Rayleigh flat-fading spatio-temporal channel under…”
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A maximum likelihood digital receiver using coordinate ascent and the discrete wavelet transform by Sharfer, I., Hero, A.O.

“…In this paper, a maximum likelihood (ML) method is presented for joint estimation of amplitude, phase, time delay, and data symbols in a single-user…”
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Kullback proximal algorithms for maximum-likelihood estimation by Chretien, S., Hero, A.O.

“…Accelerated algorithms for maximum-likelihood image reconstruction are essential for emerging applications such as three-dimensional (3-D) tomography, dynamic…”
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Min-capacity of a multiple-antenna wireless channel in a static Ricean fading environment by Godavarti, M., Hero, A.O., Marzetta, T.L.

“…This paper presents the optimal guaranteed performance for a multiple-antenna wireless compound channel with M antennas at the transmitter and N antennas at…”
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Space-alternating generalized expectation-maximization algorithm by Fessler, J.A., Hero, A.O.

“…The expectation-maximization (EM) method can facilitate maximizing likelihood functions that arise in statistical estimation problems. In the classical EM…”
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