gr-baz Package
digital_pn_correlator_cc.h
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/* -*- c++ -*- */
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/*
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* Copyright 2007,2012 Free Software Foundation, Inc.
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*
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* This file is part of GNU Radio
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*
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* GNU Radio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* GNU Radio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Radio; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef INCLUDED_GR_PN_CORRELATOR_CC_H
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#define INCLUDED_GR_PN_CORRELATOR_CC_H
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#include <
digital_api.h
>
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#include <
gr_sync_decimator.h
>
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#include <
gri_glfsr.h
>
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class
digital_pn_correlator_cc
;
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typedef
boost::shared_ptr<digital_pn_correlator_cc>
digital_pn_correlator_cc_sptr
;
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DIGITAL_API
digital_pn_correlator_cc_sptr
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digital_make_pn_correlator_cc
(
int
degree,
int
mask=0,
int
seed=1);
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/*!
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* \brief PN code sequential search correlator
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*
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* \ingroup sync_blk
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*
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* Receives complex baseband signal, outputs complex correlation
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* against reference PN code, one sample per PN code period. The PN
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* sequence is generated using a GLFSR.
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*
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* \param degree Degree of shift register must be in [1, 32]. If mask
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* is 0, the degree determines a default mask (see
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* digital_impl_glfsr.cc for the mapping).
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* \param repeat Set to repeat sequence.
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* \param mask Allows a user-defined bit mask for indexes of the shift
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* register to feed back.
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* \param seed Initial setting for values in shift register.
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*/
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class
DIGITAL_API
digital_pn_correlator_cc
:
public
gr_sync_decimator
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{
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friend
DIGITAL_API
digital_pn_correlator_cc_sptr
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digital_make_pn_correlator_cc
(
int
degree,
int
mask,
int
seed);
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int
d_len;
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float
d_pn;
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gri_glfsr
*d_reference;
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protected
:
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digital_pn_correlator_cc
(
int
degree,
int
mask,
int
seed);
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public
:
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virtual
int
work
(
int
noutput_items,
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gr_vector_const_void_star
&input_items,
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gr_vector_void_star
&output_items);
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~
digital_pn_correlator_cc
();
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};
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#endif
/* INCLUDED_GR_PN_CORRELATOR_CC_H */
gnuradio
gr-digital
include
digital_pn_correlator_cc.h
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