GNU Radio C++ API Reference: atsc_fpll.h Source File

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atsc_fpll.h
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1/* -*- c++ -*- */
2/*
3 * Copyright 2014 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * SPDX-License-Identifier: GPL-3.0-or-later
8 *
9 */
10
11#ifndef INCLUDED_DTV_ATSC_FPLL_H
12#define INCLUDED_DTV_ATSC_FPLL_H
13
14#include <gnuradio/dtv/api.h>
15#include <gnuradio/sync_block.h>
16
17namespace gr {
18namespace dtv {
19
20/*!
21 * \brief ATSC Receiver FPLL
22 *
23 * This block is takes in a complex I/Q baseband stream from the
24 * receive filter and outputs the 8-level symbol stream.
25 *
26 * It does this by first locally generating a pilot tone and
27 * complex mixing with the input signal. This results in the
28 * pilot tone shifting to DC and places the signal in the upper
29 * sideband.
30 *
31 * As no information is encoded in the phase of the waveform, the
32 * Q channel is then discarded, producing a real signal with the
33 * lower sideband restored.
34 *
35 * The 8-level symbol stream still has a DC offset, and still
36 * requires symbol timing recovery.
37 *
38 * \ingroup dtv_atsc
39 */
40 class DTV_API atsc_fpll : virtual public gr::sync_block
41{
42public:
43 // gr::dtv::atsc_fpll::sptr
44 typedef std::shared_ptr<atsc_fpll> sptr;
45
46 /*!
47 * \brief Make a new instance of gr::dtv::atsc_fpll.
48 *
49 * param rate Sample rate of incoming stream
50 */
51 static sptr make(float rate);
52};
53
54} /* namespace dtv */
55} /* namespace gr */
56
57#endif /* INCLUDED_DTV_ATSC_FPLL_H */
gr::dtv::atsc_fpll
ATSC Receiver FPLL.
Definition atsc_fpll.h:41
gr::dtv::atsc_fpll::sptr
std::shared_ptr< atsc_fpll > sptr
Definition atsc_fpll.h:44
gr::dtv::atsc_fpll::make
static sptr make(float rate)
Make a new instance of gr::dtv::atsc_fpll.
gr::sync_block
synchronous 1:1 input to output with history
Definition sync_block.h:26
api.h
DTV_API
#define DTV_API
Definition gr-dtv/include/gnuradio/dtv/api.h:18
gr::dtv
Definition atsc_consts.h:17
gr
GNU Radio logging wrapper.
Definition basic_block.h:29
sync_block.h