diff options
Diffstat (limited to 'gr-trellis/src/examples/python/test_turbo_equalization.py')
| -rwxr-xr-x | gr-trellis/src/examples/python/test_turbo_equalization.py | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gr-trellis/src/examples/python/test_turbo_equalization.py b/gr-trellis/src/examples/python/test_turbo_equalization.py index d97f3f2c29..baddd7cb50 100755 --- a/gr-trellis/src/examples/python/test_turbo_equalization.py +++ b/gr-trellis/src/examples/python/test_turbo_equalization.py @@ -7,6 +7,11 @@ import math import sys import fsm_utils +try: + from gnuradio import analog +except ImportError: + sys.stderr.write("Error: Program requires gr-analog.\n") + sys.exit(1) def make_rx(tb,fo,fi,dimensionality,tot_constellation,K,interleaver,IT,Es,N0,type): metrics_in = trellis.metrics_f(fi.O(),dimensionality,tot_constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for innner SISO @@ -63,7 +68,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,tot_constellat # CHANNEL add = gr.add_ff() - noise = gr.noise_source_f(gr.GR_GAUSSIAN,math.sqrt(N0/2),seed) + noise = analog.noise_source_f(analog.GR_GAUSSIAN,math.sqrt(N0/2),seed) # RX (head,tail) = make_rx(tb,fo,fi,dimensionality,tot_constellation,K,interleaver,IT,Es,N0,trellis.TRELLIS_MIN_SUM) |