Distortion mitigation theory and techniques for multidimensional wideband data transmission via linear/nonlinear dispersive channels.
Item
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Title
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Distortion mitigation theory and techniques for multidimensional wideband data transmission via linear/nonlinear dispersive channels.
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Identifier
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AAI9108128
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identifier
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9108128
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Creator
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Karabinis, Peter D.
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Contributor
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Adviser: Fred E. Thau
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Date
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1990
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Language
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English
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Publisher
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City University of New York.
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Subject
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Engineering, Electronics and Electrical | Engineering, System Science
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Abstract
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A unified distortion mitigation theory for multidimensional, linearly/nonlinearly dispersive data transmission systems is presented. The analysis starts with fundamental principles of linear systems theory, and linear digital communications systems modeling and optimization, and gradually generalizes until a mathematical framework emerges that unifies the behavior, analysis and optimization of the general system, containing an arbitrary combination of linear and/or nonlinear set of dispersive elements. The optimum receiver architectures and adaptive control laws that we derive and evaluate subject to the general linear/nonlinear system are channel distortion and nonlinearity model independent, and substantially superior to previously reported techniques, particularly during stressful channel conditions characterized by large amounts of linear and/or nonlinear distortion (Intersymbol Interference (ISI) limited channels).;A new approach to the ISI cancellation issue is postulated, analyzed, verified by computer simulation and shown to substantially mitigate against the limitations of conventional ISI cancellers. The new technique is generic and, besides lending itself to the linear/nonlinear ISI cancellation issue, it can also be applied to the purely linear channel decision-feedback equalizer situation to substantially resolve the long-standing error propagation problem associated with decision-feedback equalizers. Due to the importance and central role played by the transversal filter (as the building block in forming the optimal receivers developed and analyzed in this dissertation), an experimental effort has been undertaken to study digital implementations of the mulitap synchronously/fractionally spaced transversal filter. Several key properties and results predicted by the analysis are verified and presented, together with the supporting experimental observations.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
