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-rwxr-xr-xgr-trellis/src/python/qa_trellis.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/gr-trellis/src/python/qa_trellis.py b/gr-trellis/src/python/qa_trellis.py
index 53dcf0d8f6..2560e30131 100755
--- a/gr-trellis/src/python/qa_trellis.py
+++ b/gr-trellis/src/python/qa_trellis.py
@@ -31,6 +31,7 @@ import trellis
import os
import digital_swig as digital
import analog_swig as analog
+import blocks_swig as blocks
fsm_args = {"awgn1o2_4": (2, 4, 4,
(0, 2, 0, 2, 1, 3, 1, 3),
@@ -118,7 +119,7 @@ class trellis_tb(gr.top_block):
mod = digital.chunks_to_symbols_sc(constellation.points(), 1)
# CHANNEL
- add = gr.add_cc()
+ add = blocks.add_cc()
noise = analog.noise_source_c(analog.GR_GAUSSIAN,math.sqrt(N0/2),seed)
# RX