gr::digital::mpsk_snr_est_simple Class Reference

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

#include <mpsk_snr_est.h>

Inheritance diagram for gr::digital::mpsk_snr_est_simple:

List of all members.

Public Member Functions
	mpsk_snr_est_simple (double alpha)
	~mpsk_snr_est_simple ()
int	update (int noutput_items, const gr_complex *input)
	Update the current registers.
double	snr ()
	Use the register values to compute a new estimate.

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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.

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Constructor & Destructor Documentation

gr::digital::mpsk_snr_est_simple::mpsk_snr_est_simple

(

double

alpha

)

Constructor

Parameters:

Parameters:

alpha,:

the update rate of internal running average calculations.

gr::digital::mpsk_snr_est_simple::~mpsk_snr_est_simple

(

)

[inline]

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Member Function Documentation

double gr::digital::mpsk_snr_est_simple::snr

(

)

[virtual]

Use the register values to compute a new estimate.

Reimplemented from gr::digital::mpsk_snr_est.

int gr::digital::mpsk_snr_est_simple::update	(	int	noutput_items,
		const gr_complex *	input
	)		[virtual]

Update the current registers.

Reimplemented from gr::digital::mpsk_snr_est.

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

• mpsk_snr_est.h