Specifies the polynomial approximation cost-function of the device under test AM-to-PM characteristic when you set the DPD Model property to Lookup Table.

You do not need to use a selector string to configure or read this property for the default signal instance. Refer to the Selector Strings topic for information about the string syntax for named signals.

The default value is Least Absolute Residual.

Remarks

The following table lists the characteristics of this property.

Short Name DPD LUT AM to PM Curve Fit Type
Data type ci32.png
Permissions Read/Write
High-level VIs N/A
Resettable Yes
Least Square 0

Minimizes the energy of the polynomial approximation error.
Least Absolute Residual 1

Minimizes the magnitude of the polynomial approximation error.
Bisquare 2

Excludes the effect of data outliers while minimizing the energy of the polynomial approximation error.