Centre for Discrete and Applicable Mathematics

 CDAM Research Report, LSE-CDAM-97-08

June 1997


Tile Covers, Closed Tours and the Radio Spectrum

Jeannette Janssen and Kyriakos Kilakos

Abstract

The Channel Assignment Problem is the problem of assigning frequency channels in a cellular network while minimizing bandwidth, satisfying demands and keeping interference at acceptable levels. This paper shows how the CAP can be studied using mathematical programming and polyhedral theory, an approach that leads to lower bounds and a structural understanding. We discuss two alternative formulations based on closed tours and tile covers, respectively, and corresponding to different assumptions about the problem.


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