Bisectored unit disk graphs
β Scribed by John Nolan
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 191 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0028-3045
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β¦ Synopsis
Abstract
Unit disk graphs form a natural model for cellular radio channel assignment problems under the assumption of equally powerful, omnidirectional transmitters located on a uniform, flat plane. Here, we introduce and give motivation for an extension of this model, namely, sectorization at transmitter sites. We define and analyze properties of one case of sectorization, bisectored unit disk graphs, in particular, investigating properties concerning their chromatic number. Finally, we provide some experimental evidence to draw comparisons between graphs of this model and other classes of graphs. Β© 2004 Wiley Periodicals, Inc.
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## Abstract Motivated by a satellite communications problem, we consider a generalized coloring problem on unit disk graphs. A coloring is __k__βimproper if no more than __k__ neighbors of every vertex have the same colour as that assigned to the vertex. The __k__βimproper chromatic number Ο^__k__^