From f968b36d4ed2b194111585605f9a1b5367638fb3 Mon Sep 17 00:00:00 2001
From: Martin Braun <martin.braun@kit.edu>
Date: Fri, 15 Mar 2013 02:12:20 -0700
Subject: Squash/rebased martin/ofdm-master onto trial merge branch
Conflicts:
gr-blocks/include/blocks/CMakeLists.txt
---
gr-analog/include/analog/CMakeLists.txt | 3 +-
gr-analog/include/analog/plateau_detector_fb.h | 71 ++++++++++++++++++++++++++
2 files changed, 72 insertions(+), 2 deletions(-)
create mode 100644 gr-analog/include/analog/plateau_detector_fb.h
(limited to 'gr-analog/include')
diff --git a/gr-analog/include/analog/CMakeLists.txt b/gr-analog/include/analog/CMakeLists.txt
index b113dacc44..a44f119d36 100644
--- a/gr-analog/include/analog/CMakeLists.txt
+++ b/gr-analog/include/analog/CMakeLists.txt
@@ -105,8 +105,7 @@ install(FILES
rail_ff.h
rotator.h
sig_source_waveform.h
- simple_squelch_cc.h
- DESTINATION ${GR_INCLUDE_DIR}/gnuradio/analog
+ simple_squelch_cc.h plateau_detector_fb.h DESTINATION ${GR_INCLUDE_DIR}/gnuradio/analog
COMPONENT "analog_devel"
)
diff --git a/gr-analog/include/analog/plateau_detector_fb.h b/gr-analog/include/analog/plateau_detector_fb.h
new file mode 100644
index 0000000000..33629bd18b
--- /dev/null
+++ b/gr-analog/include/analog/plateau_detector_fb.h
@@ -0,0 +1,71 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+
+#ifndef INCLUDED_ANALOG_PLATEAU_DETECTOR_FB_H
+#define INCLUDED_ANALOG_PLATEAU_DETECTOR_FB_H
+
+#include <analog/api.h>
+#include <gr_sync_block.h>
+
+namespace gr {
+ namespace analog {
+
+ /*!
+ * \brief Detects a plateau and marks the middle.
+ *
+ * Detect a plateau of a-priori known height. Input is a stream of floats,
+ * the output is a stream of bytes. Whenever a plateau is detected, the
+ * middle of that plateau is marked with a '1' on the output stream (all
+ * other samples are left at zero).
+ *
+ * You can use this in a Schmidl & Cox synchronisation algorithm to interpret
+ * the output of the normalized correlator. Just pass the length of the cyclic
+ * prefix (in samples) as the max_len parameter).
+ *
+ * Unlike the peak detectors, you must the now the absolute height of the plateau.
+ * Whenever the amplitude exceeds the given threshold, it starts assuming the
+ * presence of a plateau.
+ *
+ * An implicit hysteresis is provided by the fact that after detecting one plateau,
+ * it waits at least max_len samples before the next plateau can be detected.
+ *
+ * \ingroup analog
+ *
+ */
+ class ANALOG_API plateau_detector_fb : virtual public gr_sync_block
+ {
+ public:
+ typedef boost::shared_ptr<plateau_detector_fb> sptr;
+
+ /*!
+ * \param max_len Maximum length of the plateau
+ * \param threshold Anything above this value is considered a plateau
+ */
+ static sptr make(int max_len, float threshold=0.9);
+ };
+
+ } // namespace analog
+} // namespace gr
+
+#endif /* INCLUDED_ANALOG_PLATEAU_DETECTOR_FB_H */
+
--
cgit v1.2.3
From 928a9ada1c7caa739ee57f49da4446a04d301b12 Mon Sep 17 00:00:00 2001
From: Johnathan Corgan <johnathan@corganlabs.com>
Date: Fri, 15 Mar 2013 03:15:21 -0700
Subject: analog: minor cleanup for added block
---
gr-analog/include/analog/CMakeLists.txt | 4 +++-
gr-analog/lib/CMakeLists.txt | 3 ++-
gr-analog/python/CMakeLists.txt | 2 +-
gr-analog/swig/analog_swig.i | 6 +++---
4 files changed, 9 insertions(+), 6 deletions(-)
(limited to 'gr-analog/include')
diff --git a/gr-analog/include/analog/CMakeLists.txt b/gr-analog/include/analog/CMakeLists.txt
index a44f119d36..f46960c984 100644
--- a/gr-analog/include/analog/CMakeLists.txt
+++ b/gr-analog/include/analog/CMakeLists.txt
@@ -93,6 +93,7 @@ install(FILES
fmdet_cf.h
frequency_modulator_fc.h
phase_modulator_fc.h
+ plateau_detector_fb.h
pll_carriertracking_cc.h
pll_freqdet_cf.h
pll_refout_cc.h
@@ -105,7 +106,8 @@ install(FILES
rail_ff.h
rotator.h
sig_source_waveform.h
- simple_squelch_cc.h plateau_detector_fb.h DESTINATION ${GR_INCLUDE_DIR}/gnuradio/analog
+ simple_squelch_cc.h
+ DESTINATION ${GR_INCLUDE_DIR}/gnuradio/analog
COMPONENT "analog_devel"
)
diff --git a/gr-analog/lib/CMakeLists.txt b/gr-analog/lib/CMakeLists.txt
index ecc459cd3a..396ff04654 100644
--- a/gr-analog/lib/CMakeLists.txt
+++ b/gr-analog/lib/CMakeLists.txt
@@ -121,6 +121,7 @@ list(APPEND analog_sources
fmdet_cf_impl.cc
frequency_modulator_fc_impl.cc
phase_modulator_fc_impl.cc
+ plateau_detector_fb_impl.cc
pll_carriertracking_cc_impl.cc
pll_freqdet_cf_impl.cc
pll_refout_cc_impl.cc
@@ -157,7 +158,7 @@ list(APPEND analog_libs
${Boost_LIBRARIES}
)
-add_library(gnuradio-analog SHARED ${analog_sources} plateau_detector_fb_impl.cc)
+add_library(gnuradio-analog SHARED ${analog_sources})
target_link_libraries(gnuradio-analog ${analog_libs})
GR_LIBRARY_FOO(gnuradio-analog RUNTIME_COMPONENT "analog_runtime" DEVEL_COMPONENT "analog_devel")
add_dependencies(gnuradio-analog analog_generated_includes analog_generated_swigs gnuradio-filter)
diff --git a/gr-analog/python/CMakeLists.txt b/gr-analog/python/CMakeLists.txt
index 5fabe75ca2..af4ed578f3 100644
--- a/gr-analog/python/CMakeLists.txt
+++ b/gr-analog/python/CMakeLists.txt
@@ -49,4 +49,4 @@ foreach(py_qa_test_file ${py_qa_test_files})
GR_ADD_TEST(${py_qa_test_name} ${PYTHON_EXECUTABLE} ${PYTHON_DASH_B} ${py_qa_test_file})
endforeach(py_qa_test_file)
endif(ENABLE_TESTING)
-GR_ADD_TEST(qa_plateau_detector_fb ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_plateau_detector_fb.py)
+
diff --git a/gr-analog/swig/analog_swig.i b/gr-analog/swig/analog_swig.i
index ca9220f4c6..96f4e23a8c 100644
--- a/gr-analog/swig/analog_swig.i
+++ b/gr-analog/swig/analog_swig.i
@@ -46,6 +46,7 @@
#include "analog/noise_source_f.h"
#include "analog/noise_source_c.h"
#include "analog/phase_modulator_fc.h"
+#include "analog/plateau_detector_fb.h"
#include "analog/pll_carriertracking_cc.h"
#include "analog/pll_freqdet_cf.h"
#include "analog/pll_refout_cc.h"
@@ -65,7 +66,6 @@
#include "analog/simple_squelch_cc.h"
#include "analog/squelch_base_cc.h"
#include "analog/squelch_base_ff.h"
-#include "analog/plateau_detector_fb.h"
%}
%include "analog/cpm.h"
@@ -86,6 +86,7 @@
%include "analog/noise_source_f.h"
%include "analog/noise_source_c.h"
%include "analog/phase_modulator_fc.h"
+%include "analog/plateau_detector_fb.h"
%include "analog/pll_carriertracking_cc.h"
%include "analog/pll_freqdet_cf.h"
%include "analog/pll_refout_cc.h"
@@ -121,6 +122,7 @@ GR_SWIG_BLOCK_MAGIC2(analog, noise_source_i);
GR_SWIG_BLOCK_MAGIC2(analog, noise_source_f);
GR_SWIG_BLOCK_MAGIC2(analog, noise_source_c);
GR_SWIG_BLOCK_MAGIC2(analog, phase_modulator_fc);
+GR_SWIG_BLOCK_MAGIC2(analog, plateau_detector_fb);
GR_SWIG_BLOCK_MAGIC2(analog, pll_carriertracking_cc);
GR_SWIG_BLOCK_MAGIC2(analog, pll_freqdet_cf);
GR_SWIG_BLOCK_MAGIC2(analog, pll_refout_cc);
@@ -136,5 +138,3 @@ GR_SWIG_BLOCK_MAGIC2(analog, sig_source_i);
GR_SWIG_BLOCK_MAGIC2(analog, sig_source_f);
GR_SWIG_BLOCK_MAGIC2(analog, sig_source_c);
GR_SWIG_BLOCK_MAGIC2(analog, simple_squelch_cc);
-%include "analog/plateau_detector_fb.h"
-GR_SWIG_BLOCK_MAGIC2(analog, plateau_detector_fb);
--
cgit v1.2.3