Specifications

Minimizing interference
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Now consider this deployment for a system of 4 APs deployed in a region where there are only 3 non-
overlapping channels such as America.
Figure 12: Non DRM APs and area of co-channel interference
When APs are deployed to cover an area a minimum average data rate is generally required by the
customer. However, when APs are deployed to ensure this rate everywhere the area covered by then
entire cell must be considered. This is shown above. Since channel 1 is repeated within close proximity
of another channel 1 AP there is no choice but to have an area of co-channel interference. This means
that the area in the middle of the APs is compromised for the users of either channel 1 AP. Depending
on the load level of each AP this area will experience reduced bandwidth due to collisions and other
inefficiencies when sharing channels.
Figure 13: Reduction of co-channel interference using DRM-enabled APs