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Broadcasting in weighted-vertex graphs


Broadcasting in weighted-vertex graphs

Kamali, Shahin (2008) Broadcasting in weighted-vertex graphs. Masters thesis, Concordia University.

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In this thesis, we present a new model for information dissemination in communication networks. The model is defined on networks in which nodes are assigned some weights representing the internal delay they should pass before sending data to their neighbors. The new model, called weighted-vertex model, comes to have real world applications in parallel computation and satellite terrestrial networks. Broadcasting in weighted-vertex model is a generalized version of classical broadcasting problem, which is NP_Complete. The problem remains NP_Complete in some classes of weighed-vertex graphs. We show existence of approximation algorithms for the broadcasting problem in weighted vertex model, as well as better approximations for specific subclasses of weighted graphs. In addition we study broadcasting in complete weighted graphs and present an algorithm for finding the optimum solution in this case. Broadcasting in complete graphs with uniform weights is studied separately. Finally we introduce some heuristics for the problem and compare their performance using computer simulations.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Computer Science and Software Engineering
Item Type:Thesis (Masters)
Authors:Kamali, Shahin
Pagination:ix, 75 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:M. Comp. Sc.
Program:Computer Science and Software Engineering
Thesis Supervisor(s):Harutyunyan, Hovhannes
Identification Number:LE 3 C66C67M 2008 K36
ID Code:976179
Deposited By: Concordia University Library
Deposited On:22 Jan 2013 16:21
Last Modified:13 Jul 2020 20:09
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