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When you choose channels for the access points, it can be helpful to switch the view
mode from signal power to data rate, because the data rate view reflects any adverse
effects of co-channel or near-channel interference due to channel settings.
Checking the results of access point settings in the Data Rate view.
4.4 Optimizing Wireless NetworksWhen you have finished planning wireless signal coverage for the building, you can
begin to optimize the network. You can do this in several ways, using the RF3D WifiPlan-
ner’s various views on the Simulation tab, such as data rate, interference, etc. One
approach is to display the expected data rates. The data rate view reflects all radio
effects, including interference, signal-to-noise ratio and network traffic loads. Gaps or
areas with lower data rates indicate room for improvement. To analyze the causes of
lower data rates, you can use the interference or SNR views. The problems can be al-
leviated by changing the access point settings.
When you are satisfied with your basic WLAN plan, you can then simulate its behavior
in case of faults, such as access point failures. Do this by deactivating individual ac-
cess points on the Access Points tab. A better way, however, is to use the “Log. Power
Reliability Level 1” view. In this view, RF3D WifiPlanner displays the signal power that
would be received at each location in the plan if the strongest access point for that
location had failed. For high-reliability applications, gaps in the coverage in this view
can be a problem. You can fill such gaps by adding access points.
There is always more than one way to design a wireless network. The need for a relia ble or
“high-availability” network is often difficult to reconcile with the need to ensure high data
rates by avoiding interference. You will find, however, that networks you have designed using
RF3D WifiPlanner are efficient, optimum solutions.