gr::digital::cma_equalizer_cc Class Reference

Implements constant modulus adaptive filter on complex stream. More...

#include <cma_equalizer_cc.h>

Inheritance diagram for gr::digital::cma_equalizer_cc:

List of all members.

Public Types
typedef boost::shared_ptr < cma_equalizer_cc >	sptr
Public Member Functions
virtual void	set_taps (const std::vector< gr_complex > &taps)=0
virtual std::vector< gr_complex >	taps () const =0
virtual float	gain () const =0
virtual void	set_gain (float mu)=0
virtual float	modulus () const =0
virtual void	set_modulus (float mod)=0
Static Public Member Functions
static sptr	make (int num_taps, float modulus, float mu, int sps)
Protected Member Functions
virtual gr_complex	error (const gr_complex &out)=0
virtual void	update_tap (gr_complex &tap, const gr_complex &in)=0

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Detailed Description

Implements constant modulus adaptive filter on complex stream.

The error value and tap update equations (for p=2) can be found in:

D. Godard, "Self-Recovering Equalization and Carrier Tracking in Two-Dimensional Data Communication Systems," IEEE Transactions on Communications, Vol. 28, No. 11, pp. 1867 - 1875, 1980.

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Member Typedef Documentation

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

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Member Function Documentation

virtual gr_complex gr::digital::cma_equalizer_cc::error

(

const gr_complex &

out

)

[protected, pure virtual]

virtual float gr::digital::cma_equalizer_cc::gain

(

)

const [pure virtual]

static sptr gr::digital::cma_equalizer_cc::make	(	int	num_taps,
		float	modulus,
		float	mu,
		int	sps
	)		[static]

Make a CMA Equalizer block

Parameters:

num_taps	Numer of taps in the equalizer (channel size)
modulus	Modulus of the modulated signals
mu	Gain of the update loop
sps	Number of samples per symbol of the input signal

virtual float gr::digital::cma_equalizer_cc::modulus

(

)

const [pure virtual]

virtual void gr::digital::cma_equalizer_cc::set_gain

(

float

mu

)

[pure virtual]

virtual void gr::digital::cma_equalizer_cc::set_modulus

(

float

mod

)

[pure virtual]

virtual void gr::digital::cma_equalizer_cc::set_taps

(

const std::vector< gr_complex > &

taps

)

[pure virtual]

virtual std::vector<gr_complex> gr::digital::cma_equalizer_cc::taps

(

)

const [pure virtual]

virtual void gr::digital::cma_equalizer_cc::update_tap	(	gr_complex &	tap,
		const gr_complex &	in
	)		[protected, pure virtual]

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

• cma_equalizer_cc.h