Test FIR filter implemenatation / eigener FIR Block Gnur radio

5 files changed, 137 insertions, 2 deletions

diff --git a/src/gr-fadingui/python/CMakeLists.txt b/src/gr-fadingui/python/CMakeLists.txt
index 6ee73d3..95bb852 100644
--- a/src/gr-fadingui/python/CMakeLists.txt
+++ b/src/gr-fadingui/python/CMakeLists.txt
@@ -37,7 +37,8 @@ GR_PYTHON_INSTALL(
     dearpygui_sink.py
     xor_frame_sync.py
     deframer.py
-    frame_obj.py DESTINATION ${GR_PYTHON_DIR}/fadingui
+    frame_obj.py
+    multipath_fading.py DESTINATION ${GR_PYTHON_DIR}/fadingui
 )
 
 ########################################################################
@@ -48,3 +49,4 @@ include(GrTest)
 set(GR_TEST_TARGET_DEPS gnuradio-fadingui)
 set(GR_TEST_PYTHON_DIRS ${CMAKE_BINARY_DIR}/swig)
 GR_ADD_TEST(qa_xor_frame_sync ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_xor_frame_sync.py)
+GR_ADD_TEST(qa_multipath_fading ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/qa_multipath_fading.py)
diff --git a/src/gr-fadingui/python/__init__.py b/src/gr-fadingui/python/__init__.py
index 5fdfea4..5a7b546 100644
--- a/src/gr-fadingui/python/__init__.py
+++ b/src/gr-fadingui/python/__init__.py
@@ -37,5 +37,6 @@ from .dearpygui_sink import dearpygui_sink
 from .xor_frame_sync import xor_frame_sync
 from .deframer import deframer
 from .frame_obj import frame_obj
+from .multipath_fading import multipath_fading
 
 #
diff --git a/src/gr-fadingui/python/multipath_fading.py b/src/gr-fadingui/python/multipath_fading.py
new file mode 100644
index 0000000..01f2dbe
--- /dev/null
+++ b/src/gr-fadingui/python/multipath_fading.py
@@ -0,0 +1,91 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Copyright 2021 Sara Cinzia Halter.
+#
+# This 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.
+#
+# This software 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 this software; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+
+import numpy as np
+from numpy.fft import fft,ifft,fftshift
+from gnuradio import gr
+
+from fadingui.logger import get_logger
+log = get_logger("multipath_fading")
+
+class multipath_fading(gr.sync_block):
+    """
+    docstring for block multipath_fading
+    """
+    def __init__(self, amplitudes=[], delays=[], los=True):  # only default arguments here
+        """arguments to this function show up as parameters in GRC"""
+        gr.sync_block.__init__(
+            self,
+            name='Embedded Python Block',   # will show up in GRC
+            in_sig=[np.complex64],
+            out_sig=[np.complex64]
+        )
+        # if an attribute with the same name as a parameter is found,
+        # a callback is registered (properties work, too).
+        self.amplitudes = amplitudes
+        self.delays = delays
+        self.temp = [0]
+        # if los:
+        #     self.amplitudes.append(1)
+        #     self.delays.append(0)
+        self.los= 1
+        #self.fir = 
+
+    def work(self, input_items, output_items):
+        """example: multiply with constant"""
+        inp = input_items[0]
+        oup = output_items[0]
+        
+        if len(self.amplitudes) != len(self.delays):
+            raise Exception("Amplitudes and Delay length dont match")
+
+        #    raise Exception("Delay length can't be one")
+        #if np.min(self.delays)<=1:
+        #    raise Exception("Delay length can't be one")
+        max_len = np.max(self.delays)
+        sum_x = np.zeros(max_len)
+        for(a,d) in zip(self.amplitudes,self.delays):
+            # if d-1 <= 0:
+            #     x = np.concatenate([[a], np.zeros(max_len-1)])
+            # else:                
+            x = np.concatenate([np.zeros(d-1), [a], np.zeros(max_len-d)])
+            sum_x += x
+        
+        sum_x[0] = self.los
+        log.debug(sum_x)
+        
+        #H_int = fft(sum_x)
+
+        #h = ifft(H_int)
+
+        #h[0]=1
+
+        y = np.convolve(inp, sum_x)
+        
+        y+=np.concatenate([self.temp,np.zeros(len(y)-len(self.temp))])
+        
+
+        oup[:] = y[:len(inp)]
+        self.temp = y[len(inp):]        
+        
+
+        return len(oup)
\ No newline at end of file
diff --git a/src/gr-fadingui/python/qa_multipath_fading.py b/src/gr-fadingui/python/qa_multipath_fading.py
new file mode 100755
index 0000000..6a27cc6
--- /dev/null
+++ b/src/gr-fadingui/python/qa_multipath_fading.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Copyright 2021 Sara Cinzia Halter.
+#
+# This 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.
+#
+# This software 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 this software; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+from gnuradio import gr, gr_unittest
+from gnuradio import blocks
+from multipath_fading import multipath_fading
+
+class qa_multipath_fading(gr_unittest.TestCase):
+
+    def setUp(self):
+        self.tb = gr.top_block()
+
+    def tearDown(self):
+        self.tb = None
+
+    def test_001_t(self):
+        # set up fg
+        self.tb.run()
+        # check data
+
+
+if __name__ == '__main__':
+    gr_unittest.run(qa_multipath_fading)
diff --git a/src/gr-fadingui/python/xor_frame_sync.py b/src/gr-fadingui/python/xor_frame_sync.py
index 05c150a..bb5cfb1 100644
--- a/src/gr-fadingui/python/xor_frame_sync.py
+++ b/src/gr-fadingui/python/xor_frame_sync.py
@@ -9,7 +9,7 @@ from numpy_ringbuffer import RingBuffer
 
 from gnuradio import gr
 
-from logger import get_logger
+from fadingui.logger import get_logger
 log = get_logger("xor_frame_sync")