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AFT Create FIR QR-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 QR decomposition-based recursive least squares (QR-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 QR-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 QR-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 Convergence Speed and Computation Time of Adaptive Filters VI in the labview\examples\Adaptive Filters\Getting Started directory for an example of using the AFT Create FIR QR-RLS VI.


 

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