GNU Radio 3.5.1 C++ API
digital_impl_mpsk_snr_est_simple Class Reference

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

#include <digital_impl_mpsk_snr_est.h>

Inheritance diagram for digital_impl_mpsk_snr_est_simple:

List of all members.

Public Member Functions

 digital_impl_mpsk_snr_est_simple (double alpha)
 ~digital_impl_mpsk_snr_est_simple ()
int update (int noutput_items, const gr_complex *in)
 Update the current registers.
double snr ()
 Use the register values to compute a new estimate.

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 esimator 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

digital_impl_mpsk_snr_est_simple::digital_impl_mpsk_snr_est_simple ( double  alpha)

Constructor

Parameters:

Parameters:
alpha,:the update rate of internal running average calculations.
digital_impl_mpsk_snr_est_simple::~digital_impl_mpsk_snr_est_simple ( ) [inline]

Member Function Documentation

double digital_impl_mpsk_snr_est_simple::snr ( ) [virtual]

Use the register values to compute a new estimate.

Reimplemented from digital_impl_mpsk_snr_est.

int digital_impl_mpsk_snr_est_simple::update ( int  noutput_items,
const gr_complex in 
) [virtual]

Update the current registers.

Reimplemented from digital_impl_mpsk_snr_est.


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