Changes between Initial Version and Version 1 of Old/NodeHandler/FAQ/ToUseNoiseGenerator

Timestamp:

Sep 29, 2005, 5:32:27 PM (20 years ago)

Author:

zhibinwu

Comment:

—

Old/NodeHandler/FAQ/ToUseNoiseGenerator

@@ +1 @@
+[wiki:WikiStart Orbit] > [wiki:NodeHandler NodeHandler] > [wiki:NodeHandler/FAQ FAQ] > Noise Generator Usage
+
+= Using Noise Generator in Experiments =
+
+The main idea is this:
+
+Along with node definitions in the first part of the experiment script,
+you also define the antenna to be a part of the experiment
+
+The antennas are located here:
+  * Antenna 1: Between node2-1 and node2-2
+  * Antenna 2: Between node2-7 and node2-8
+  * Antenna 3: Between node7-1 and node7-2
+  * Antenna 4: Between node7-7 and node7-8.
+
+I am attaching a template script to use the noise generator
+
+The configurable parameters are
+  * channel on which you want to operate: 
+    Valid channels are 1..11, 36, 40, 44, 48, 52, 56, 60, 64, 149, 153, 157 and 161
+  * Noise power on these channels: Limits are from -90 dBm to +5 dBm
+
+Here is a template script to use the noise generator
+{{{
+#Template to use noise generator in the experiment
+
+Experiment.defProperty(‘noisePower', -44, Noise level injected')
+
+nodes([2,2], 'sender') {|node| …
+
+nodes([8,8], ‘receiver') {|node| …
+
+antenna(4,4).signal {|s|
+s.type = ‘noise’
+s.bandwidth = 20
+s.channel = 3
+s.power = Experiment.property(“noisePower")
+}
+
+
+whenAllInstalled() {|node|
+
+allNodes.startApplications
+
+wait 10
+
+# increase noise from -44 dBm to -4dBm in steps of 2 dBm
+antenna(4,4).signal.on
+-44.step(4, 2) { |p|
+  Experiment.props.noisePower = p
+  wait 30
+}
+
+Experiment.done
+
+}
+
+}}}