GNU Radio 3.5.1 C++ API
gri_mmse_fir_interpolator Class Reference

Compute intermediate samples between signal samples x(k*Ts)This implements a Mininum Mean Squared Error interpolator with 8 taps. It is suitable for signals where the bandwidth of interest B = 1/(4*Ts) Where Ts is the time between samples. More...

#include <gri_mmse_fir_interpolator.h>

List of all members.

Public Member Functions

 gri_mmse_fir_interpolator ()
 ~gri_mmse_fir_interpolator ()
unsigned ntaps () const
unsigned nsteps () const
float interpolate (const float input[], float mu) const
 compute a single interpolated output value. input must have ntaps() valid entries. input[0] .. input[ntaps() - 1] are referenced to compute the output value.

Protected Attributes

std::vector< gr_fir_fff * > filters

Detailed Description

Compute intermediate samples between signal samples x(k*Ts)

This implements a Mininum Mean Squared Error interpolator with 8 taps. It is suitable for signals where the bandwidth of interest B = 1/(4*Ts) Where Ts is the time between samples.

Although mu, the fractional delay, is specified as a float, it is actually quantized. 0.0 <= mu <= 1.0. That is, mu is quantized in the interpolate method to 32nd's of a sample.


Constructor & Destructor Documentation

gri_mmse_fir_interpolator::gri_mmse_fir_interpolator ( )
gri_mmse_fir_interpolator::~gri_mmse_fir_interpolator ( )

Member Function Documentation

float gri_mmse_fir_interpolator::interpolate ( const float  input[],
float  mu 
) const

compute a single interpolated output value. input must have ntaps() valid entries. input[0] .. input[ntaps() - 1] are referenced to compute the output value.

mu must be in the range [0, 1] and specifies the fractional delay.

Returns:
the interpolated input value.
unsigned gri_mmse_fir_interpolator::nsteps ( ) const
unsigned gri_mmse_fir_interpolator::ntaps ( ) const

Member Data Documentation


The documentation for this class was generated from the following file: