Performance of multilevel codes in context with carrierless amplitude and phase modulation (CAP) in a high-bit rate distribution environment.
Item
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Title
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Performance of multilevel codes in context with carrierless amplitude and phase modulation (CAP) in a high-bit rate distribution environment.
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Identifier
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AAI9720088
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identifier
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9720088
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Creator
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Fageria, Rajesh.
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Contributor
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Adviser: Syed Ahamed
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Date
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1997
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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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Computer Science
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Abstract
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The systematic replacement of bandwidth inefficient codes (AMI, Manchester, HDBk, etc.) with more efficient codes is a fact to be noticed, since the introduction of new services (video on demand, telecommuting, teleconferencing, internet services, multimedia, etc.) requires such a need. As fiber is replacing the copper layer (distribution plant) with transmission rates ranging from 51.84 Mbits/s to 4.98 Gbits/s, the last connection to made (customer premises) is still a complicated and not viable option. Only codes with truly bandwidth efficients capabilities will be able to handle tbe integration of optical and cable capacities.;Shannon formula attests that if a strong S/N can be maintained than increased transmission capacities can be achieved for limited bandwidth. To achieve this goal, the present research introduces an efficient coding mechanism that look upon the characteristics of multilevel encoding (M levels) of symbols in one or two dimensions using efficient spectral shaping.;Premises distribution system (PDS) is studied, and analysis is done with existing code structures, with particular emphasis given onto multilevel (ML) and carrierless amplitude and phase (CAP) types of coding structures. As the work evolved into maturity, new loop configuration were made available with parameters assessed.;Contributions of this work are oriented toward the objective to allow the integration and transmission of information scattered over the network with efficient line codes that will provide high bit rate for a given bandwidth or alternatively, for a fixed bit rate reduce the bandwidth required. A final step toward completion of task, it kept in mind the goals and boundaries of a micro-model, while instigating itself into a unique synthesis of analysis, experience and perspective for the fields of networking, information processing and telecommunications.
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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.
