digital_clock_recovery_mm_ff Class Reference

Mueller and Müller (M&M) based clock recovery block with float input, float output. More...

#include <digital_clock_recovery_mm_ff.h>

Inheritance diagram for digital_clock_recovery_mm_ff:

List of all members.

Public Member Functions
	~digital_clock_recovery_mm_ff ()
void	forecast (int noutput_items, gr_vector_int &ninput_items_required)
	Estimate input requirements given output request.
int	general_work (int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
	compute output items from input items
float	mu () const
float	omega () const
float	gain_mu () const
float	gain_omega () const
void	set_gain_mu (float gain_mu)
void	set_gain_omega (float gain_omega)
void	set_mu (float mu)
void	set_omega (float omega)
Protected Member Functions
	digital_clock_recovery_mm_ff (float omega, float gain_omega, float mu, float gain_mu, float omega_relative_limit)
Friends
DIGITAL_API digital_clock_recovery_mm_ff_sptr	digital_make_clock_recovery_mm_ff (float omega, float gain_omega, float mu, float gain_mu, float omega_relative_limit)

---

Detailed Description

Mueller and Müller (M&M) based clock recovery block with float input, float output.

This implements the Mueller and Müller (M&M) discrete-time error-tracking synchronizer.

See "Digital Communication Receivers: Synchronization, Channel Estimation and Signal Processing" by Heinrich Meyr, Marc Moeneclaey, & Stefan Fechtel. ISBN 0-471-50275-8.

---

Constructor & Destructor Documentation

digital_clock_recovery_mm_ff::~digital_clock_recovery_mm_ff

(

)

digital_clock_recovery_mm_ff::digital_clock_recovery_mm_ff	(	float	omega,
		float	gain_omega,
		float	mu,
		float	gain_mu,
		float	omega_relative_limit
	)		[protected]

---

Member Function Documentation

void digital_clock_recovery_mm_ff::forecast	(	int	noutput_items,
		gr_vector_int &	ninput_items_required
	)		[virtual]

Estimate input requirements given output request.

Parameters:

noutput_items	number of output items to produce
ninput_items_required	number of input items required on each input stream

Given a request to product noutput_items, estimate the number of data items required on each input stream. The estimate doesn't have to be exact, but should be close.

Reimplemented from gr_block.

float digital_clock_recovery_mm_ff::gain_mu

(

)

const [inline]

float digital_clock_recovery_mm_ff::gain_omega

(

)

const [inline]

int digital_clock_recovery_mm_ff::general_work	(	int	noutput_items,
		gr_vector_int &	ninput_items,
		gr_vector_const_void_star &	input_items,
		gr_vector_void_star &	output_items
	)		[virtual]

compute output items from input items

Parameters:

noutput_items	number of output items to write on each output stream
ninput_items	number of input items available on each input stream
input_items	vector of pointers to the input items, one entry per input stream
output_items	vector of pointers to the output items, one entry per output stream

Returns:

number of items actually written to each output stream, or -1 on EOF. It is OK to return a value less than noutput_items. -1 <= return value <= noutput_items

general_work must call consume or consume_each to indicate how many items were consumed on each input stream.

Reimplemented from gr_block.

float digital_clock_recovery_mm_ff::mu

(

)

const [inline]

float digital_clock_recovery_mm_ff::omega

(

)

const [inline]

void digital_clock_recovery_mm_ff::set_gain_mu

(

float

gain_mu

)

[inline]

void digital_clock_recovery_mm_ff::set_gain_omega

(

float

gain_omega

)

[inline]

void digital_clock_recovery_mm_ff::set_mu

(

float

mu

)

[inline]

void digital_clock_recovery_mm_ff::set_omega

(

float

omega

)

[inline]

---

Friends And Related Function Documentation

DIGITAL_API digital_clock_recovery_mm_ff_sptr digital_make_clock_recovery_mm_ff	(	float	omega,
		float	gain_omega,
		float	mu,
		float	gain_mu,
		float	omega_relative_limit
	)		[friend]

---

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

• digital_clock_recovery_mm_ff.h