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AFT Create FIR RLS VI

LabVIEW 2013 Adaptive Filter Toolkit Help

Edition Date: June 2013

Part Number: 372357B-01

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Owning Palette: Adaptive Filters VIs

Requires: Adaptive Filter Toolkit

Creates a finite impulse response (FIR) adaptive filter with the recursive least squares (RLS) algorithm. You must manually select the polymorphic instance you want to use.

Note  National Instruments recommends that you create and destroy adaptive filters outside loop structures.

Example

Use the pull-down menu to select an instance of this VI.

AFT Create FIR RLS (Real)

filter length specifies the filter length of the adaptive filter. The value must be greater than or equal to 2. The default is 128.
forgetting factor specifies the forgetting factor of the adaptive filter. The valid value range is (0, 1]. National Instruments recommends that you specify a value between [0.9, 1]. The default is 0.95.
regularization factor specifies the regularization factor of the adaptive filter. The value must be greater than zero. The default is 1E–5.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
adaptive filter out returns the adaptive filter that this VI creates.
error out contains error information. This output provides standard error out functionality.

AFT Create FIR RLS (Complex)

filter length specifies the filter length of the adaptive filter. The value must be greater than or equal to 2. The default is 128.
forgetting factor specifies the forgetting factor of the adaptive filter. The valid value range is (0, 1]. National Instruments recommends that you specify a value between [0.9, 1]. The default is 0.95.
regularization factor specifies the regularization factor of the adaptive filter. The value must be greater than zero. The default is 1E–5.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
adaptive filter out returns the adaptive filter that this VI creates.
error out contains error information. This output provides standard error out functionality.

Example

Refer to the Adaptive Channel Equalization VI in the labview\examples\Adaptive Filters\Applications\Adaptive Channel Equalization directory for an example of using the AFT Create FIR RLS VI.


 

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