Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 452 for “"continuous time"”.
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Batch Continuous-Time Trajectory Estimation
… and mapping (SLAM) formulation with a discrete-time trajectory model; this is not well suited for scanning-type sensors, such as lidar. In this thesis, we assert that a continuous-time model of the trajectory is a more natural and principled representation for robotic-state estimation. Practical …
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Continuous-time multivariable system identification
In this thesis, we consider the identification of continuous-time multivariable systems. Direct methods of identification, i.e. identifying a continuous-time model directly from samples of input-output data, are considered briefly. Of primary consideration is the indirect method of identification, …
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Essays on continuous time diffusion models.
During the past few decades, continuous time diffusion models have become an integral part of financial economics. Especially, in certain core areas in finance, such as interest rate, asset pricing, option pricing, portfolio selection and volatility modelling, continuous time diffusion models have …
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Particle Filtering for Continuous Time Problems
… in Bayesian inference. When data arrives in real time or sequentially, and instantaneous statistical reasoning is required, sequential Monte Carlo (SMC) methods, or particle filters, are used to estimate the posterior distribution in real time. A major challenge in particle filtering is estimating …
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Quantum information processing in continuous time
… to designing quantum algorithms based on continuous-time Hamiltonian dynamics. In quantum computation by adiabatic evolution, the computer is prepared in the known ground state of a simple Hamiltonian, which is slowly modified so that its ground state encodes the solution to a problem. We …
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Continuous-time dynamics shortest path algorithms
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Reciprocal classes of continuous time Markov Chains
… reciprocal classes of Markov chains. Given a continuous time Markov chain on a countable state space, acting as reference dynamics, the associated reciprocal class is the set of all probability measures on path space that can be written as a mixture of its bridges. These processes possess a …
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Estimation of Cointegrated Systems in Continuous Time
In this thesis we derive exact discrete time representation models that correspond to cointegrated systems in continuous time. At the same time, for the parameters of those models, estimation procedures are outlined. The representations are applicable for data observed as both stock or flow …
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Continuous Time Multi-state Models for Survival Analysis
… to discuss the survival analysis techniques for continuous time multi-state models. It explores homogeneous Markov models, homogeneous semi-Markov models, non-homogeneous Markov models, and general models. It also discusses the likelihoods, hazards, and probabilities for each model. This paper …
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Continuous-time Latent-variable Models for Time Series
Time series data play a crucial role in many applications, such as biology, medicine, economics, engineering and others. One of the most powerful approaches for time series is latent-variable models, thanks to their ability to handle multi-dimensional data with complex interactions. Typically, …
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Continuous-Time Delta-Sigma Modulators for Wireless Communication
… to the field and five papers that focus on the continuous-time (CT) Delta-Sigma modulator (DSM) as ADC. Paper I analyses the performance degradation of dynamic nonlinearity in the feedback DAC of the DSM, caused by Vth mismatch in the current-switching (differential) pair of a current-steering …
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Linearity improvement technique for CMOS continuous-time filters
… applied in the implementation of low-distortion continuous-time filters in complementary metal-oxide-semiconductor (CMOS) technology. This work is motivated by the fact that to date, most of the techniques in continuous-time, electronically tunable filters perform quite poorly in linearity. The …
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Continuous-time analog circuits for statistical signal processing
… alternate paradigm for designing computers using continuous-time analog circuits. Digital computation sacrifices continuous degrees of freedom. A principled approach to recovering them is to view analog circuits as propagating probabilities in a message passing algorithm. Within this framework, …
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A precision CMOS continuous-time autozeroed op-amp
Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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A sampling jitter tolerant continuous-time pipeline ADC
A sampling jitter tolerant continuous-time (CT) pipeline ADC has been presented in this thesis. In conventional discrete-time (DT) pipeline ADCs, the input is sampled upfront. The improvements in the bandwidth and sampling speed due to CMOS scaling have brought the deleterious effects of sampling …
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COARSE CORRELATED EQUILIBRIA IN CONTINUOUS-TIME MEAN FIELD GAMES
… general equilibria with better properties in continuous-time MFGs. In game theory literature, coarse correlated equilibria (CCEs) have been proposed as an alternative to Nash equilibria. CCEs can be seen as generalizations of the Nash equilibrium concept, incorporating a correlation device …
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Nonlinear and Hybrid Feedbacks with Continuous-Time Linear Systems
In this thesis we study linear time-invariant systems feedback interconnected with three specific nonlinear blocks; a play/stop operator, a switching-reset mechanism, and an adaptive dead-zone. This setup resembles the Lure problem studied in the absolute stability framework, but the types of …
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Signal Encoding and Digital Signal Processing in Continuous Time
… signal processing systems that function in continuous time (CT). Unlike conventional digital signal processors (DSPs), which rely on a clock to dictate the sampling times of an analog-to-digital converter (ADC) and to provide the tap delay timing, CT DSPs function entirely in continuous …
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Inverse optimal control for deterministic continuous-time nonlinear systems
… necessary conditions for optimality. We consider continuous-time deterministic optimal control systems with a cost function that is a linear combination of known basis functions. We compare our approach with three prior methods of inverse optimal control. We demonstrate the performance of these …
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