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.
Results
Showing 1 to 20 of 24 for “"Non-Gaussian noise"”.
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Non-Gaussian Noise in Superconducting Circuits
… to man-made systems, living things embrace noise and use it to further their functionality. It is therefore not surprising that some lifeforms couple strongly to environmental fluctuations, and can leverage non-Gaussian noise to gain a competitive edge over their peers. In this thesis, I …
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Non-Gaussian noise spectroscopy with superconducting qubits
… error-correction protocols assume that the noise causing decoherence is described by Gaussian statistics. However, the Gaussianity assumption breaks down when the quantum system is strongly coupled to a sparse environment or has a non-linear response to external degrees of freedom. Here, we …
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State Estimation in Dynamical Robotic System with Non-Gaussian Noise
… robotic sensor measurements are contaminated by Gaussian noise. However, in practical applications, the noise is often non-Gaussian, heavy-tailed, or even multi-modal. In this thesis, we develop algorithms that perform state estimation in dynamical systems with arbitrary noise and prove their …
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Signal Detection and Modulation Classification in Non-Gaussian Noise Environments
… in the literature assume that the additive noise has a Gaussian distribution. However, while this is a good model for thermal noise, various studies have shown that the noise experienced in most radio channels, due to a variety of man-made and natural electromagnetic sources, is non-Gaussian …
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Detection of signals corrupted by the combination of Gaussian and Non-Gaussian noise
The detection of signals in the presence of noise is one of the most basic and important problems encountered by communication engineers. Although the literature abounds with analyses of communications in Gaussian noise, relatively little work has appeared dealing with communications in …
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Wavelet Thresholding for Non (Necessarily) Gaussian Noise
… ones, <br>these wavelets have been used for non-parametric function estimation. <br>In the literature, two main models are present. In the first model, <br>the target functions are members of some smoothness class and for this class <br>the minimax properties of estimators are investigated. …
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Low Frequency Noise in Semiconductors and Metals (Statistics, Gaussian (Noise)
Properties of l/f noise (low frequency resistance fluctuations) are analyzed using the results of a number of experiments, several of which are unique to our laboratory. Measurements of thermally activated noise spectral features, as well as the effect of a surface potential of the noise kinetics …
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A Code Division Multiple Access Communication System for the Low Frequency Band
… modulation and our model includes an impulsive (non-Gaussian) noise source to model LF atmospheric noise.
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1/f noise in semiconductors and metals
Properties of 1/f noise (low frequency resistance fluctuations) are analyzed using the results of a number of experiments, several of which are unique to our laboratory. Measurements of thermally activated noise spectral features, as well as the effect of a surface potential on the noise kinetics …
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Robust Kalman Filters Using Generalized Maximum Likelihood-Type Estimators
… assumption underlying the estimation is that the noise is Gaussian. In practical systems though, one quite frequently encounters thick-tailed, non-Gaussian noise. Statistically, contamination by this type of noise can be seen as inducing outliers among the data and leads to significant degradation …
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Dielectric noise spectroscopy of relaxor ferroelectrics
… From the statistical details, the lack of any non-Gaussian noise in this case, we are able to set an upper limit on the number of nanodomains that can act cooperatively in both equilibrium and near equilibrium."
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A Robust Dynamic State and Parameter Estimation Framework for Smart Grid Monitoring and Control
… large dynamical system model uncertainties and non-Gaussian thick-tailed process and observation noises. It turns out that the current Kalman filter-based dynamic state estimators given in the literature suffer from several important shortcomings, precluding them from being adopted by power …
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Hydrogen concentration and temperature affect the 1/f resistance noise in niobium films
… was studied from 60 K to 400 K. The resistance noise came from hydrogen ions and other defects placed in the films during sputtering. Hydrogen ions cause three types of 1/f noise at different temperatures. The noise is related to internal friction phenomena such as the Gorsky effect and the …
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Hydrogen concentration and temperature affect the 1/f resistance noise in Nb films
… was studied from 60 K to 400 K. The resistance noise came from hydrogen ions and other defects placed in the films during sputtering. Hydrogen ions cause three types of 1/f noise at different temperatures. The noise is related to internal friction phenomena such as the Gorsky effect and the …
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Simulation Tool and Metric for Evaluating Wireless Digital Video Systems
… digital wireless transmission in various noise and interference environments. The basic communications system models the DAVIC (Digital Audio-Visual Council) layout for the LMDS (Local Multipoint Distribution Service) system and includes several error control algorithms and a packetizing …
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Network Inference Using Independence Criteria
… criteria: distance covariance (dCov), kernel canonical variance (KCC), kernel generalized variance (KGV) and the Hilbert-Schmidt Independence Criterion (HSIC). We provide easy to understand geometrical interpretations for these criteria. We also explicitly show the equivalence of dCov, KGV and …
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Advances in Iterative Probabilistic Processing for Communication Receivers
… (2) detection in co-channel interference and non-Gaussian noise, and (3) joint channel estimation and multi-signal detection. This dissertation presents the advances we have made in iterative probabilistic processing in order to tackle these problems. The motivation behind the work is to (a) …
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Noise and delays in adaptive interacting oscillatory systems
… interactions to be time delayed and subject to noise sources affecting either the orbits of the local dynamics and/or the connectivity of the network. Within this very general dynamical context, we construct and focus on interactions enabling a certain level of adaptation between the local …
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Laboratory and field trials evaluation of transmit delay Diversity applied to DVB-T/H networks
… mutual coupling, scattering vegetation impact, non-Gaussian noise sources and receiver implementation. Moreover, a practical analysis of the effectiveness of experimental techniques to mitigate the loss due to transmit DD loss in rooftop reception is presented. The results of this thesis …
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Detailed and Practical 3D Reconstruction with Advanced Photometric Stereo Modelling
… resilience to real world imperfections such as non-Gaussian noise and other outliers. Thus, a highly accurate, photometric-based reconstruction system is now possible. The contribution of this thesis is threefold. First of all, the Photometric Stereo model is extended in order to be able to deal …
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