gr::digital::constellation_receiver_cb Class Reference

This block makes hard decisions about the received symbols (using a constellation object) and also fine tunes phase synchronization. More...

#include <constellation_receiver_cb.h>

Inheritance diagram for gr::digital::constellation_receiver_cb:

List of all members.

Public Types
typedef boost::shared_ptr < constellation_receiver_cb >	sptr
Public Member Functions
virtual void	phase_error_tracking (float phase_error)=0
Static Public Member Functions
static sptr	make (constellation_sptr constellation, float loop_bw, float fmin, float fmax)
	Constructor to synchronize incoming M-PSK symbols.

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Detailed Description

This block makes hard decisions about the received symbols (using a constellation object) and also fine tunes phase synchronization.

The phase and frequency synchronization are based on a Costas loop that finds the error of the incoming signal point compared to its nearest constellation point. The frequency and phase of the NCO are updated according to this error.

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Member Typedef Documentation

typedef boost::shared_ptr<constellation_receiver_cb> gr::digital::constellation_receiver_cb::sptr

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Member Function Documentation

static sptr gr::digital::constellation_receiver_cb::make	(	constellation_sptr	constellation,
		float	loop_bw,
		float	fmin,
		float	fmax
	)		[static]

Constructor to synchronize incoming M-PSK symbols.

Parameters:

constellation	constellation of points for generic modulation
loop_bw	Loop bandwidth of the Costas Loop (~ 2pi/100)
fmin	minimum normalized frequency value the loop can achieve
fmax	maximum normalized frequency value the loop can achieve

The constructor chooses which phase detector and decision maker to use in the work loop based on the value of M.

virtual void gr::digital::constellation_receiver_cb::phase_error_tracking

(

float

phase_error

)

[pure virtual]

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

• constellation_receiver_cb.h