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Prepares a signal for presentation on a graph that shows the detected symbol locations and the transitions between those symbols. The node specifies a complex-valued waveform and displays a constellation plot of the waveform contents.

This node assumes that the input waveform is a digitally modulated complex baseband signal containing samples that fall on symbol boundaries with a sample rate that is an integer multiple of the samples per symbol value.

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waveform

Recovered modulated data for plotting as a constellation.

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t0

Trigger (start) time of the Y array.

Default: 0.0

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dt

Time interval between data points in the Y array.

Default: 1.0

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Y

The complex-valued signal-only baseband modulated waveform. The real and imaginary parts of this complex data array correspond to the in-phase (I) and quadrature-phase (Q) data, respectively.

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samples per symbol

Number of samples per symbol in the recovered waveform.

Default: 16

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error in

Error conditions that occur before this node runs. The node responds to this input according to standard error behavior.

Default: no error

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constellation graph

A two-element array of XY data. Wire this parameter directly to an XY graph.

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constellation

An array of doubles representing the constellation plot.

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oversampled data

An array of doubles representing the oversampled data.

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error out

Error information. The node produces this output according to standard error behavior.