GNU Radio Manual and C++ API Reference
3.9.1.0
The Free & Open Software Radio Ecosystem
atsc_fpll.h
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/* -*- c++ -*- */
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/*
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* Copyright 2014 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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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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*/
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#ifndef INCLUDED_DTV_ATSC_FPLL_H
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#define INCLUDED_DTV_ATSC_FPLL_H
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#include <
gnuradio/dtv/api.h
>
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#include <
gnuradio/sync_block.h
>
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namespace
gr
{
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namespace
dtv {
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/*!
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* \brief ATSC Receiver FPLL
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*
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* This block is takes in a complex I/Q baseband stream from the
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* receive filter and outputs the 8-level symbol stream.
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*
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* It does this by first locally generating a pilot tone and
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* complex mixing with the input signal. This results in the
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* pilot tone shifting to DC and places the signal in the upper
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* sideband.
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*
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* As no information is encoded in the phase of the waveform, the
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* Q channel is then discarded, producing a real signal with the
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* lower sideband restored.
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*
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* The 8-level symbol stream still has a DC offset, and still
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* requires symbol timing recovery.
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*
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* \ingroup dtv_atsc
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*/
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class
DTV_API
atsc_fpll
:
virtual
public
gr::sync_block
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{
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public
:
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// gr::dtv::atsc_fpll::sptr
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typedef
std::shared_ptr<atsc_fpll>
sptr
;
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/*!
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* \brief Make a new instance of gr::dtv::atsc_fpll.
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*
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* param rate Sample rate of incoming stream
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*/
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static
sptr
make(
float
rate);
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};
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}
/* namespace dtv */
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}
/* namespace gr */
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#endif
/* INCLUDED_DTV_ATSC_FPLL_H */
DTV_API
#define DTV_API
Definition:
gr-dtv/include/gnuradio/dtv/api.h:18
gr::dtv::atsc_fpll::sptr
std::shared_ptr< atsc_fpll > sptr
Definition:
atsc_fpll.h:44
gr::sync_block
synchronous 1:1 input to output with history
Definition:
sync_block.h:25
api.h
sync_block.h
gr::dtv::atsc_fpll
ATSC Receiver FPLL.
Definition:
atsc_fpll.h:40
gr
GNU Radio logging wrapper for log4cpp library (C++ port of log4j)
Definition:
basic_block.h:29
gr-dtv
include
gnuradio
dtv
atsc_fpll.h
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