Power Issues in Communication Systems

دانشگاه آزاد اسلامی اصفهان(خوراسگان)

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" Power Issues in Communication Systems "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	151311
Doc. No	:	ET23103
Main Entry	:	Nasir Ahmed
Title Proper	:	Power Issues in Communication Systems
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	In this work, we are concerned with power efficient communication techniquesfor wireless mobile devices. In this direction the effects of nonlinear amplifiers incommunications systems are first studied, as they tend to consume a large fraction ofavailable battery power. Next, a new information theoretic upper bound is proposedthat takes into account power efficiency, and the bound achieving input distributionsare analyzed and shown to be strikingly different than those that achieve channelcapacity. Next, in order to examine methods to achieve the power efficient inputdistributions, results on shaping gains are restated, with particular emphasis on non-equiprobable signaling in two dimensions. With slight changes in classical techniqueswe are able achieve power efficient signaling schemes that reduce the wasted powerfrom RF amplification. Finally, simulation results are shown to verify the savings inwasted energy obtained through the use of these power efficient signaling schemes..-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL46337.pdf
Title and statement of responsibility and	:	Power Issues in Communication Systems [Thesis]