Power Issues in Communication Systems

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dc.citation.bibtexNamemastersthesisen_US
dc.citation.journalTitleMasters Thesisen_US
dc.contributor.authorAhmed, Nasiren_US
dc.contributor.orgCenter for Multimedia Communications (http://cmc.rice.edu/)en_US
dc.creatorAhmed, Nasiren_US
dc.date.accessioned2007-10-31T00:33:35Zen_US
dc.date.available2007-10-31T00:33:35Zen_US
dc.date.issued2002-04-20en_US
dc.date.modified2003-07-12en_US
dc.date.submitted2002-04-25en_US
dc.descriptionMasters Thesisen_US
dc.description.abstractIn this work, we are concerned with power efficient communication techniques for wireless mobile devices. In this direction the effects of nonlinear amplifiers in communications systems are first studied, as they tend to consume a large fraction of available battery power. Next, a new information theoretic upper bound is proposed that takes into account power efficiency, and the bound achieving input distributions are analyzed and shown to be strikingly different that those that achieve channel capacity. Next, in order to examine methods to achieve the power efficient input distributions, results on shaping gains are restated, with particular emphasis on non-equiprobable signalign in two dimensions. With slight changes in classical techniques we are able to achieve power efficient signaling schemes that reduce the wasted power from RF amplification. Finally, simulation results are shown to verify the savings in wasted energy obtained through the use of these power efficient signalign schemes.en_US
dc.identifier.citationN. Ahmed, "Power Issues in Communication Systems," Masters Thesis, 2002.en_US
dc.identifier.urihttps://hdl.handle.net/1911/19660en_US
dc.language.isoengen_US
dc.subjectPower Amplifiersen_US
dc.subjectShapingen_US
dc.subjectNon-equiprobable signalingen_US
dc.subject.keywordPower Amplifiersen_US
dc.subject.keywordShapingen_US
dc.subject.keywordNon-equiprobable signalingen_US
dc.titlePower Issues in Communication Systemsen_US
dc.typeThesisen_US
dc.type.dcmiTexten_US
dc.type.dcmiTexten_US
thesis.degree.levelMastersen_US
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