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gr::digital::mpsk_snr_est_simple Class Reference

SNR Estimator using simple mean/variance estimates. More...

#include <gnuradio/digital/mpsk_snr_est.h>

Public Member Functions

 mpsk_snr_est_simple (double alpha)
 ~mpsk_snr_est_simple () override
int update (int noutput_items, const gr_complex *input) override
 Update the current registers. More...
double snr () override
 Use the register values to compute a new estimate. More...
- Public Member Functions inherited from gr::digital::mpsk_snr_est
 mpsk_snr_est (double alpha)
virtual ~mpsk_snr_est ()
double alpha () const
 Get the running-average coefficient. More...
void set_alpha (double alpha)
 Set the running-average coefficient. More...
virtual double signal ()
 Returns the signal power estimate. More...
virtual double noise ()
 Returns the noise power estimate. More...

Additional Inherited Members

- Protected Attributes inherited from gr::digital::mpsk_snr_est
double d_alpha
double d_beta
double d_signal
double d_noise

Detailed Description

SNR Estimator using simple mean/variance estimates.

A very simple SNR estimator that just uses mean and variance estimates of an M-PSK constellation. This estimator is quick and cheap and accurate for high SNR (above 7 dB or so) but quickly starts to overestimate the SNR at low SNR.

Constructor & Destructor Documentation

◆ mpsk_snr_est_simple()

gr::digital::mpsk_snr_est_simple::mpsk_snr_est_simple ( double  alpha)



alphathe update rate of internal running average calculations.

◆ ~mpsk_snr_est_simple()

gr::digital::mpsk_snr_est_simple::~mpsk_snr_est_simple ( )

Member Function Documentation

◆ snr()

double gr::digital::mpsk_snr_est_simple::snr ( )

Use the register values to compute a new estimate.

Reimplemented from gr::digital::mpsk_snr_est.

◆ update()

int gr::digital::mpsk_snr_est_simple::update ( int  noutput_items,
const gr_complex input 

Update the current registers.

Reimplemented from gr::digital::mpsk_snr_est.

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