public override void Execute(Envision.Blocks.EventDescription e)
{
if (InputNodes[0].ConnectingNode != null)
{
var Tx = InputNodes[0].Object;
if (Envision.Components.Utils.IsSignal(Tx))
{
OpenSignalLib.Sources.Signal s = Envision.Components.Utils.AsSignal(Tx);
OpenSignalLib.Sources.Signal n = new OpenSignalLib.Sources.WhiteGaussianNoise
(s.Samples.Length, SNRdB, (int)s.SamplingRate, s.SignalEnergy());
OutputNodes[0].Object = s + n;
}
else if (Envision.Components.Utils.IsArrayOf <Complex>(Tx))
{
Complex[] vals = (Complex[])Tx;
OpenSignalLib.Sources.Signal s1 = new OpenSignalLib.Sources.Signal(1f, new double[vals.Length]);
OpenSignalLib.Sources.Signal s2 = new OpenSignalLib.Sources.Signal(1f, new double[vals.Length]);
for (int i = 0; i < vals.Length; i++)
{
s1.Samples[i] = vals[i].Re;
s2.Samples[i] = vals[i].Im;
}
OpenSignalLib.Sources.Signal n1 = new OpenSignalLib.Sources.WhiteGaussianNoise
(s1.Samples.Length, SNRdB, (int)s1.SamplingRate, s1.SignalEnergy());
OpenSignalLib.Sources.Signal n2 = new OpenSignalLib.Sources.WhiteGaussianNoise
(s2.Samples.Length, SNRdB, (int)s2.SamplingRate, s2.SignalEnergy());
s1 = s1 + n1;
s2 = s2 + n1;
for (int i = 0; i < vals.Length; i++)
{
vals[i] = new Complex(s1.Samples[i], s2.Samples[i]);
}
OutputNodes[0].Object = vals;
}
}
else
{
throw new InvalidOperationException("input terminal 'Tx' not connected");
}
}
public override void Execute(Envision.Blocks.EventDescription e)
{
throw new NotImplementedException();
}
