gr_dd_mpsk_sync_cc Class Reference
[Signal Clock Synchronization]

Decision directed M-PSK synchronous demod

This block performs joint carrier tracking and symbol timing recovery. More...

#include <gr_dd_mpsk_sync_cc.h>

Inheritance diagram for gr_dd_mpsk_sync_cc:

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Collaboration diagram for gr_dd_mpsk_sync_cc:

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List of all members.

Public Member Functions

 ~gr_dd_mpsk_sync_cc ()
void forecast (int noutput_items, gr_vector_int &ninput_items_required)
 Estimate input requirements given output request.
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_dd_mpsk_sync_cc (float alpha, float beta, float max_freq, float min_freq, float ref_phase, float omega, float gain_omega, float mu, float gain_mu)
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

Friends

gr_dd_mpsk_sync_cc_sptr gr_make_dd_mpsk_sync_cc (float alpha, float beta, float max_freq, float min_freq, float ref_phase, float omega, float gain_omega, float mu, float gain_mu)


Detailed Description

Decision directed M-PSK synchronous demod

This block performs joint carrier tracking and symbol timing recovery.

input: complex baseband; output: properly timed complex samples ready for slicing.

N.B, at this point, it handles only QPSK.


Constructor & Destructor Documentation

gr_dd_mpsk_sync_cc::~gr_dd_mpsk_sync_cc (  ) 

gr_dd_mpsk_sync_cc::gr_dd_mpsk_sync_cc ( float  alpha,
float  beta,
float  max_freq,
float  min_freq,
float  ref_phase,
float  omega,
float  gain_omega,
float  mu,
float  gain_mu 
) [protected]


Member Function Documentation

void gr_dd_mpsk_sync_cc::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_dd_mpsk_sync_cc::gain_mu (  )  const [inline]

float gr_dd_mpsk_sync_cc::gain_omega (  )  const [inline]

int gr_dd_mpsk_sync_cc::general_work ( int  noutput_items,
gr_vector_int ninput_items,
gr_vector_const_void_star input_items,
gr_vector_void_star output_items 
) [protected, 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_dd_mpsk_sync_cc::mu (  )  const [inline]

float gr_dd_mpsk_sync_cc::omega (  )  const [inline]

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

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

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

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


Friends And Related Function Documentation

gr_dd_mpsk_sync_cc_sptr gr_make_dd_mpsk_sync_cc ( float  alpha,
float  beta,
float  max_freq,
float  min_freq,
float  ref_phase,
float  omega,
float  gain_omega,
float  mu,
float  gain_mu 
) [friend]


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

Generated on Thu Mar 5 09:02:35 2009 for GNU Radio 3.1.3 by  doxygen 1.5.8