Browsing by Title
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Optimal control of time evolution systems: Controllability investigations and numerical algorithms
(1995)Optimal control problems for partial differential equations of evolution, mostly of parabolic type, are considered. The means of control are a nonhomogeneous boundary condition or forcing term. A hierarchical control problem ... 
Optimal design problems for quasidisks and partially clamped drums: Existence, symmetrization, and numerical methods
(1997)It is shown that the class of quasidisks in the complex plane, with fixed quasicircle constant and area, is compact in both the Hausdorff metric and in the sense of Caratheodory convergence. Compactness for chordarc domains ... 
Optimal Detection Using Bilinear Time Frequency and Time Scale Representations
(19951220)Bilinear timefrequency representations (TFRs) and timescale representations (TSRs) are potentially very useful for detecting a nonstationary signal in the presence of nonstationary noise or interference. As quadratic ... 
Optimal digital communication of analog signals
(20050301)In this paper, the problem of optimally communicating analog sources using a bandwidth and power limited digital system is considered. We propose and analyze optimal combined sourcechannel coding schemes that jointly ... 
OPTIMAL ESTIMATION FOR BANDLIMITED SIGNALS
(1979)The problem of estimation for bandlimited signals is investigated. The desired estimate is based on a finite number of time samples taken from a measurement interval of length T(,M). With no additional information, the ... 
Optimal Kernels for Nonstationary Spectral Estimation
(19950220)Current theories of a timevarying spectrum of a nonstationary process all involve, either by definition or by difficulties in estimation, an assumption that the signal statistics vary slowly over time. This restrictive ... 
Optimal openloop CMG maneuvers
(2002)In this thesis, a general method was developed to solve the momentumoptimal attitude command trajectory for a given reorientation. The solution method relied on converting a standard twopoint boundaryvalue problem to ... 
Optimal parallel 2D FIR digital filter with separable terms
(19970501)This paper completely solves the optimal Weighted Least Mean Square (WLMS) design problem using sums of separable terms. For any fixed number of separable terms (less than or equal to the rank of the unconstrained solution), ... 
Optimal Phase Kernels for TimeFrequency Analysis
(19960501)We consider the design of kernels for timefrequency distributions through the phase, rather than amplitude, response. While phase kernels do not attenuate troublesome crosscomponents, they can translate them in the ... 
Optimal Phase Kernels for TimeFrequency Analysis
(19960101)We consider the design of kernels for timefrequency distributions through the phase, rather than amplitude, response. While phase kernels do not attenuate troublesome crosscomponents, they can translate them in the ... 
OPTIMAL RECOVERY OF SIGNALS FROM LINEAR MEASUREMENTS AND PRIOR KNOWLEDGE (EXTRAPOLATION, DETERMINISTIC, BANDLIMITED, SPECTRAL, ESTIMATION)
(1985)The problem of bandlimited extrapolation is studied in a general framework of estimation of a signal in an ellipsoidal signal class from the value of a linear transformation. The dissertation deals with finitelength ... 
Optimal Reduced Rank TimeFrequency/Time Scale Quadratic Detectors
(19960120)Optimal detectors based on timefrequency/timescale representations (TFRs/TSRs) admit a representation in terms of a bank of spectrograms/scalograms that yields a large class of detectors. These range from the conventional ... 
Optimal reorientation of spacecraft using only control moment gyroscopes
(2007)Spacecraft reorientation can require propellant even when using gyroscopes since these have momentum saturation limits at which control is lost until thrusters are fired to desaturate them. To eliminate this need and thereby ... 
Optimal Routing and Power Allocation for Wireless Networks with Imperfect FullDuplex Nodes
(20130724)We study a wireless fullduplex network with imperfect interference cancellation and solve the routing and power allocation problem in this network. We use a model that focuses on the effects of fullduplex by including ... 
Optimal Sampling Strategies for Multiscale Models with Application to Network Traffic Estimation
(20031001)This paper considers the problem of determining which set of 2<sup><i>p</i></sup> leaf nodes on a binary multiscale tree model of depth N (<i>N</i>><i>p</i>) gives the best linear minimum meansquared estimator of the ... 
Optimal Sampling Strategies for Multiscale Stochastic Processes
(20060115)In this paper, we determine which nonrandom sampling of fixed size gives the best linear predictor of the sum of a finite spatial population. We employ different multiscale superpopulation models and use the minimum ... 
Optimal Sampling Strategies for Multiscale Stochastic Processes
(20041201)This paper studies multiscale stochastic processes which are random processes organized on the nodes of a tree. The random variables at different levels on the tree represent time series of samples of a stochastic process ...