gr_clock_recovery_mm_ff Class Reference
[Signal Clock Synchronization]

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. More...

#include <gr_clock_recovery_mm_ff.h>

Inheritance diagram for gr_clock_recovery_mm_ff:

Inheritance graph
[legend]
Collaboration diagram for gr_clock_recovery_mm_ff:

Collaboration graph
[legend]

List of all members.

Public Member Functions

 ~gr_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

 gr_clock_recovery_mm_ff (float omega, float gain_omega, float mu, float gain_mu, float omega_relative_limit)

Friends

gr_clock_recovery_mm_ff_sptr gr_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

gr_clock_recovery_mm_ff::~gr_clock_recovery_mm_ff (  ) 

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


Member Function Documentation

void gr_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 gr_clock_recovery_mm_ff::gain_mu (  )  const [inline]

float gr_clock_recovery_mm_ff::gain_omega (  )  const [inline]

int gr_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.

Implements gr_block.

float gr_clock_recovery_mm_ff::mu (  )  const [inline]

float gr_clock_recovery_mm_ff::omega (  )  const [inline]

void gr_clock_recovery_mm_ff::set_gain_mu ( float  gain_mu  )  [inline]

void gr_clock_recovery_mm_ff::set_gain_omega ( float  gain_omega  )  [inline]

void gr_clock_recovery_mm_ff::set_mu ( float  mu  )  [inline]

void gr_clock_recovery_mm_ff::set_omega ( float  omega  )  [inline]


Friends And Related Function Documentation

gr_clock_recovery_mm_ff_sptr gr_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:

Generated on Thu Mar 5 09:02:33 2009 for GNU Radio 3.1.3 by  doxygen 1.5.8