Cochannel and adjacent channel reuse ratio distributions in dynamic channel assignment microcellular systems

This paper presents a novel analysis of cochannel and adjacent channel reuse ratio distributions in DCA microcell systems, and compares the results with conventional FCA macrocell systems. Computer simulations show that DCA systems exhibit significantly closer channel reuse than FCA systems for a significant proportion of terminals. Mathematical analysis is used to show that this is a fundamental consequence of the microcell architecture and that the resultant interference distributions cannot be obtained using conventional cellular engineering techniques. A closed form expression for the channel reuse ratio distribution in DCA microcell systems is derived, which in turn establishes a theoretical lower limit to the channel reuse ratio in DCA systems.