1 files changed, 83 insertions, 0 deletions
diff --git a/gr-digital/python/qa_fll_band_edge.py b/gr-digital/python/qa_fll_band_edge.py
new file mode 100755
index 000000000..088eb2b68
--- /dev/null
+++ b/gr-digital/python/qa_fll_band_edge.py
@@ -0,0 +1,83 @@
+#!/usr/bin/env python
+#
+# Copyright 2011 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.
+# 
+
+from gnuradio import gr, gr_unittest
+import digital_swig
+import random, math
+
+class test_fll_band_edge_cc(gr_unittest.TestCase):
+
+    def setUp (self):
+        self.tb = gr.top_block ()
+
+    def tearDown (self):
+        self.tb = None
+
+    def test01 (self):
+        sps = 4
+        rolloff = 0.35
+        bw = 2*math.pi/100.0
+        ntaps = 45
+        
+        # Create pulse shape filter
+        rrc_taps = gr.firdes.root_raised_cosine(
+            sps, sps, 1.0, rolloff, ntaps)
+
+        # The frequency offset to correct
+        foffset = 0.2 / (2.0*math.pi)
+
+        # Create a set of 1's and -1's, pulse shape and interpolate to sps
+        data = [2.0*random.randint(0, 2) - 1.0 for i in xrange(200)]
+        self.src = gr.vector_source_c(data, False)
+        self.rrc = gr.interp_fir_filter_ccf(sps, rrc_taps)
+
+        # Mix symbols with a complex sinusoid to spin them
+        self.nco = gr.sig_source_c(1, gr.GR_SIN_WAVE, foffset, 1)
+        self.mix = gr.multiply_cc()
+
+        # FLL will despin the symbols to an arbitrary phase
+        self.fll = digital_swig.fll_band_edge_cc(sps, rolloff, ntaps, bw)
+
+        # Create sinks for all outputs of the FLL
+        # we will only care about the freq and error outputs
+        self.vsnk_frq = gr.vector_sink_f()
+        self.nsnk_fll = gr.null_sink(gr.sizeof_gr_complex)
+        self.nsnk_phs = gr.null_sink(gr.sizeof_float)
+        self.nsnk_err = gr.null_sink(gr.sizeof_float)
+        
+        # Connect the blocks
+        self.tb.connect(self.nco, (self.mix,1))
+        self.tb.connect(self.src, self.rrc, (self.mix,0))
+        self.tb.connect(self.mix, self.fll, self.nsnk_fll)
+        self.tb.connect((self.fll,1), self.vsnk_frq)
+        self.tb.connect((self.fll,2), self.nsnk_phs)
+        self.tb.connect((self.fll,3), self.nsnk_err)
+        self.tb.run()
+        
+        N = 700
+        dst_data = self.vsnk_frq.data()[N:]
+
+        expected_result = len(dst_data)* [-0.20,]
+        self.assertComplexTuplesAlmostEqual (expected_result, dst_data, 4)
+
+if __name__ == '__main__':
+    gr_unittest.run(test_fll_band_edge_cc, "test_fll_band_edge_cc.xml")