diff options
Diffstat (limited to 'gr-digital/python/qa_constellation_receiver.py')
| -rwxr-xr-x | gr-digital/python/qa_constellation_receiver.py | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/gr-digital/python/qa_constellation_receiver.py b/gr-digital/python/qa_constellation_receiver.py index 70b62c7aa..25107e4a7 100755 --- a/gr-digital/python/qa_constellation_receiver.py +++ b/gr-digital/python/qa_constellation_receiver.py @@ -22,13 +22,14 @@ import random -from gnuradio import gr, blks2, packet_utils, gr_unittest +from gnuradio import gr, blks2, gr_unittest from utils import mod_codes, alignment -import digital_swig +import digital_swig, packet_utils from generic_mod_demod import generic_mod, generic_demod from qa_constellation import tested_constellations, twod_constell +import math # Set a seed so that if errors turn up they are reproducible. # 1234 fails @@ -37,7 +38,7 @@ random.seed(1239) # TESTING PARAMETERS # The number of symbols to test with. # We need this many to let the frequency recovery block converge. -DATA_LENGTH = 200000 +DATA_LENGTH = 10000 # Test fails if fraction of output that is correct is less than this. REQ_CORRECT = 0.8 @@ -47,11 +48,8 @@ FREQUENCY_OFFSET = 0.01 TIMING_OFFSET = 1.0 # RECEIVER PARAMETERS -# Increased from normal default of 0.01 to speed things up. -FREQ_ALPHA = 0.02 -# Decreased from normal default of 0.1 is required for the constellations -# with smaller point separations. -PHASE_ALPHA = 0.02 +FREQ_BW = 2*math.pi/100.0 +PHASE_BW = 2*math.pi/100.0 class test_constellation_receiver (gr_unittest.TestCase): @@ -127,8 +125,8 @@ class rec_test_tb (gr.top_block): channel = gr.channel_model(NOISE_VOLTAGE, FREQUENCY_OFFSET, TIMING_OFFSET) # Receiver Blocks demod = generic_demod(constellation, differential=differential, - freq_alpha=FREQ_ALPHA, - phase_alpha=PHASE_ALPHA) + freq_bw=FREQ_BW, + phase_bw=PHASE_BW) self.dst = gr.vector_sink_b() self.connect(src, packer, mod, channel, demod, self.dst) |