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-rw-r--r--gr-trellis/CMakeLists.txt1
-rw-r--r--gr-trellis/doc/test_tcm.py4
-rw-r--r--gr-trellis/doc/test_tcm.py.xml4
-rwxr-xr-xgr-trellis/doc/test_viterbi_equalization1.py4
-rw-r--r--gr-trellis/doc/test_viterbi_equalization1.py.xml4
-rwxr-xr-xgr-trellis/src/examples/python/test_cpm.py8
-rwxr-xr-xgr-trellis/src/examples/python/test_pccc_turbo1.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_sccc_hard.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_sccc_soft.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_sccc_turbo.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_sccc_turbo1.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_sccc_turbo2.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_tcm.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_tcm_bit.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_tcm_combined.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_tcm_parallel.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_turbo_equalization.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_turbo_equalization1.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_turbo_equalization2.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_viterbi_equalization.py3
-rwxr-xr-xgr-trellis/src/examples/python/test_viterbi_equalization1.py3
21 files changed, 43 insertions, 27 deletions
diff --git a/gr-trellis/CMakeLists.txt b/gr-trellis/CMakeLists.txt
index 2685be2950..c1e5001195 100644
--- a/gr-trellis/CMakeLists.txt
+++ b/gr-trellis/CMakeLists.txt
@@ -29,6 +29,7 @@ include(GrComponent)
GR_REGISTER_COMPONENT("gr-trellis" ENABLE_GR_TRELLIS
Boost_FOUND
ENABLE_GR_CORE
+ ENABLE_GR_ANALOG
ENABLE_GR_DIGITAL
)
diff --git a/gr-trellis/doc/test_tcm.py b/gr-trellis/doc/test_tcm.py
index 3a285e27a2..ac8641d7a7 100644
--- a/gr-trellis/doc/test_tcm.py
+++ b/gr-trellis/doc/test_tcm.py
@@ -2,7 +2,7 @@
from gnuradio import gr
from gnuradio import audio
-from gnuradio import trellis, digital
+from gnuradio import trellis, digital, analog
from gnuradio import eng_notation
import math
import sys
@@ -21,7 +21,7 @@ def run_test (f,Kb,bitspersymbol,K,dimensionality,constellation,N0,seed):
# 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
metrics = trellis.metrics_f(f.O(),dimensionality,constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for Viterbi
diff --git a/gr-trellis/doc/test_tcm.py.xml b/gr-trellis/doc/test_tcm.py.xml
index a4c541e38a..4122fafff8 100644
--- a/gr-trellis/doc/test_tcm.py.xml
+++ b/gr-trellis/doc/test_tcm.py.xml
@@ -4,7 +4,7 @@
2
3 from gnuradio import gr
4 from gnuradio import audio
- 5 from gnuradio import trellis
+ 5 from gnuradio import trellis, digital, analog
6 from gnuradio import eng_notation
7 import math
8 import sys
@@ -23,7 +23,7 @@
21
22 # CHANNEL
23 add = gr.add_ff()
- 24 noise = gr.noise_source_f(gr.GR_GAUSSIAN,math.sqrt(N0/2),seed)
+ 24 noise = analog.noise_source_f(analog.GR_GAUSSIAN,math.sqrt(N0/2),seed)
25
26 # RX
27 metrics = trellis.metrics_f(f.O(),dimensionality,constellation,trellis.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for Viterbi
diff --git a/gr-trellis/doc/test_viterbi_equalization1.py b/gr-trellis/doc/test_viterbi_equalization1.py
index c9c897fe2e..2dd3f2bcbe 100755
--- a/gr-trellis/doc/test_viterbi_equalization1.py
+++ b/gr-trellis/doc/test_viterbi_equalization1.py
@@ -2,7 +2,7 @@
from gnuradio import gr
from gnuradio import audio
-from gnuradio import trellis, digital
+from gnuradio import trellis, digital, analog
from gnuradio import eng_notation
import math
import sys
@@ -28,7 +28,7 @@ def run_test (f,Kb,bitspersymbol,K,channel,modulation,dimensionality,tot_constel
# CHANNEL
isi = gr.fir_filter_fff(1,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
skip = gr.skiphead(gr.sizeof_float, L) # skip the first L samples since you know they are coming from the L zero symbols
diff --git a/gr-trellis/doc/test_viterbi_equalization1.py.xml b/gr-trellis/doc/test_viterbi_equalization1.py.xml
index 751633a618..e1f2aeefcb 100644
--- a/gr-trellis/doc/test_viterbi_equalization1.py.xml
+++ b/gr-trellis/doc/test_viterbi_equalization1.py.xml
@@ -4,7 +4,7 @@
2
3 from gnuradio import gr
4 from gnuradio import audio
- 5 from gnuradio import trellis
+ 5 from gnuradio import trellis, digital, analog
6 from gnuradio import eng_notation
7 import math
8 import sys
@@ -30,7 +30,7 @@
28 # CHANNEL
29 isi = gr.fir_filter_fff(1,channel)
30 add = gr.add_ff()
- 31 noise = gr.noise_source_f(gr.GR_GAUSSIAN,math.sqrt(N0/2),seed)
+ 31 noise = analog.noise_source_f(analog.GR_GAUSSIAN,math.sqrt(N0/2),seed)
32
33 # RX
34 skip = gr.skiphead(gr.sizeof_float, L) # skip the first L samples since you know they are coming from the L zero symbols
diff --git a/gr-trellis/src/examples/python/test_cpm.py b/gr-trellis/src/examples/python/test_cpm.py
index 7e80d400be..ce55f52682 100755
--- a/gr-trellis/src/examples/python/test_cpm.py
+++ b/gr-trellis/src/examples/python/test_cpm.py
@@ -9,7 +9,7 @@
from gnuradio import gr
from gnuradio import trellis, digital, filter
-from gnuradio.gr import firdes
+from gnuradio import analog
from grc_gnuradio import blks2 as grc_blks2
import math
import numpy
@@ -91,13 +91,13 @@ def run_test(seed,blocksize):
random_source_x_0 = gr.vector_source_b(data.tolist(), False)
digital_chunks_to_symbols_xx_0 = digital.chunks_to_symbols_bf((-1, 1), 1)
gr_interp_fir_filter_xxx_0 = filter.interp_fir_filter_fff(Q, p)
- gr_frequency_modulator_fc_0 = gr.frequency_modulator_fc(2*math.pi*h*(1.0/Q))
+ gr_frequency_modulator_fc_0 = analog.frequency_modulator_fc(2*math.pi*h*(1.0/Q))
gr_add_vxx_0 = gr.add_vcc(1)
- gr_noise_source_x_0 = gr.noise_source_c(gr.GR_GAUSSIAN, (N0/2.0)**0.5, -long(seed))
+ gr_noise_source_x_0 = analog.noise_source_c(analog.GR_GAUSSIAN, (N0/2.0)**0.5, -long(seed))
gr_multiply_vxx_0 = gr.multiply_vcc(1)
- gr_sig_source_x_0 = gr.sig_source_c(Q, gr.GR_COS_WAVE, -f0T, 1, 0)
+ gr_sig_source_x_0 = analog.sig_source_c(Q, analog.GR_COS_WAVE, -f0T, 1, 0)
# only works for N=2, do it manually for N>2...
gr_fir_filter_xxx_0_0 = filter.fir_filter_ccc(Q, MF[0].conjugate())
gr_fir_filter_xxx_0_0_0 = filter.fir_filter_ccc(Q, MF[1].conjugate())
diff --git a/gr-trellis/src/examples/python/test_pccc_turbo1.py b/gr-trellis/src/examples/python/test_pccc_turbo1.py
index abc0e1d01f..1ddd01876f 100755
--- a/gr-trellis/src/examples/python/test_pccc_turbo1.py
+++ b/gr-trellis/src/examples/python/test_pccc_turbo1.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -24,7 +25,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,constellation,
# 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
metrics_in = trellis.metrics_f(fi.O()*fo.O(),dimensionality,constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for innner SISO
diff --git a/gr-trellis/src/examples/python/test_sccc_hard.py b/gr-trellis/src/examples/python/test_sccc_hard.py
index 397ebf0871..f55485550b 100755
--- a/gr-trellis/src/examples/python/test_sccc_hard.py
+++ b/gr-trellis/src/examples/python/test_sccc_hard.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -23,7 +24,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,constellation,
# 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
metrics_in = trellis.metrics_f(fi.O(),dimensionality,constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for innner Viterbi
diff --git a/gr-trellis/src/examples/python/test_sccc_soft.py b/gr-trellis/src/examples/python/test_sccc_soft.py
index b1ffaae748..72a7098b37 100755
--- a/gr-trellis/src/examples/python/test_sccc_soft.py
+++ b/gr-trellis/src/examples/python/test_sccc_soft.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -26,7 +27,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,constellation,
# 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
metrics_in = trellis.metrics_f(fi.O(),dimensionality,constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for innner Viterbi
diff --git a/gr-trellis/src/examples/python/test_sccc_turbo.py b/gr-trellis/src/examples/python/test_sccc_turbo.py
index e8054a08b2..90155860bc 100755
--- a/gr-trellis/src/examples/python/test_sccc_turbo.py
+++ b/gr-trellis/src/examples/python/test_sccc_turbo.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -65,7 +66,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,constellation,
# 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,constellation,K,interleaver,IT,Es,N0,trellis.TRELLIS_MIN_SUM)
diff --git a/gr-trellis/src/examples/python/test_sccc_turbo1.py b/gr-trellis/src/examples/python/test_sccc_turbo1.py
index ef5d32f588..cae853b9bf 100755
--- a/gr-trellis/src/examples/python/test_sccc_turbo1.py
+++ b/gr-trellis/src/examples/python/test_sccc_turbo1.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -21,7 +22,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,constellation,
# 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
dec = trellis.sccc_decoder_combined_fs(fo,0,-1,fi,0,-1,interleaver,K,IT,trellis.TRELLIS_MIN_SUM,dimensionality,constellation,digital.TRELLIS_EUCLIDEAN,1.0)
diff --git a/gr-trellis/src/examples/python/test_sccc_turbo2.py b/gr-trellis/src/examples/python/test_sccc_turbo2.py
index 942572676d..c9303f788b 100755
--- a/gr-trellis/src/examples/python/test_sccc_turbo2.py
+++ b/gr-trellis/src/examples/python/test_sccc_turbo2.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -21,7 +22,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,dimensionality,constellation,
# 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
metrics_in = trellis.metrics_f(fi.O(),dimensionality,constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for innner SISO
diff --git a/gr-trellis/src/examples/python/test_tcm.py b/gr-trellis/src/examples/python/test_tcm.py
index eff93f5b4e..0d1c657beb 100755
--- a/gr-trellis/src/examples/python/test_tcm.py
+++ b/gr-trellis/src/examples/python/test_tcm.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -28,7 +29,7 @@ def run_test (f,Kb,bitspersymbol,K,dimensionality,constellation,N0,seed):
# 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
metrics = trellis.metrics_f(f.O(),dimensionality,constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for Viterbi
diff --git a/gr-trellis/src/examples/python/test_tcm_bit.py b/gr-trellis/src/examples/python/test_tcm_bit.py
index 1a89d06a89..7147902380 100755
--- a/gr-trellis/src/examples/python/test_tcm_bit.py
+++ b/gr-trellis/src/examples/python/test_tcm_bit.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -30,7 +31,7 @@ def run_test (f,Kb,bitspersymbol,K,dimensionality,constellation,N0,seed):
# 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
diff --git a/gr-trellis/src/examples/python/test_tcm_combined.py b/gr-trellis/src/examples/python/test_tcm_combined.py
index a46444e32b..6630f0c11b 100755
--- a/gr-trellis/src/examples/python/test_tcm_combined.py
+++ b/gr-trellis/src/examples/python/test_tcm_combined.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -23,7 +24,7 @@ def run_test (f,Kb,bitspersymbol,K,dimensionality,constellation,N0,seed):
# 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
diff --git a/gr-trellis/src/examples/python/test_tcm_parallel.py b/gr-trellis/src/examples/python/test_tcm_parallel.py
index 72fb8cf3bf..7e42cff51b 100755
--- a/gr-trellis/src/examples/python/test_tcm_parallel.py
+++ b/gr-trellis/src/examples/python/test_tcm_parallel.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -26,7 +27,7 @@ def run_test (f,Kb,bitspersymbol,K,dimensionality,constellation,N0,seed,P):
noise=[]
for i in range(P):
add.append(gr.add_ff())
- noise.append(gr.noise_source_f(gr.GR_GAUSSIAN,math.sqrt(N0/2),seed))
+ noise.append(analog.noise_source_f(analog.GR_GAUSSIAN,math.sqrt(N0/2),seed))
# RX
metrics = trellis.metrics_f(f.O(),dimensionality,constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for Viterbi
diff --git a/gr-trellis/src/examples/python/test_turbo_equalization.py b/gr-trellis/src/examples/python/test_turbo_equalization.py
index d97f3f2c29..854344c30a 100755
--- a/gr-trellis/src/examples/python/test_turbo_equalization.py
+++ b/gr-trellis/src/examples/python/test_turbo_equalization.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -63,7 +64,7 @@ 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)
diff --git a/gr-trellis/src/examples/python/test_turbo_equalization1.py b/gr-trellis/src/examples/python/test_turbo_equalization1.py
index e8b946458c..cbca2c8410 100755
--- a/gr-trellis/src/examples/python/test_turbo_equalization1.py
+++ b/gr-trellis/src/examples/python/test_turbo_equalization1.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital, filter
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -66,7 +67,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,channel,modulation,dimensiona
# CHANNEL
isi = filter.fir_filter_fff(1,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)
diff --git a/gr-trellis/src/examples/python/test_turbo_equalization2.py b/gr-trellis/src/examples/python/test_turbo_equalization2.py
index 6b37ee9b59..52f33da498 100755
--- a/gr-trellis/src/examples/python/test_turbo_equalization2.py
+++ b/gr-trellis/src/examples/python/test_turbo_equalization2.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital, filter
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -64,7 +65,7 @@ def run_test (fo,fi,interleaver,Kb,bitspersymbol,K,channel,modulation,dimensiona
# CHANNEL
isi = filter.fir_filter_fff(1,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)
diff --git a/gr-trellis/src/examples/python/test_viterbi_equalization.py b/gr-trellis/src/examples/python/test_viterbi_equalization.py
index 00d54620b2..c80f36a54b 100755
--- a/gr-trellis/src/examples/python/test_viterbi_equalization.py
+++ b/gr-trellis/src/examples/python/test_viterbi_equalization.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -20,7 +21,7 @@ def run_test (f,Kb,bitspersymbol,K,dimensionality,tot_constellation,N0,seed):
# 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
metrics = trellis.metrics_f(f.O(),dimensionality,tot_constellation,digital.TRELLIS_EUCLIDEAN) # data preprocessing to generate metrics for Viterbi
diff --git a/gr-trellis/src/examples/python/test_viterbi_equalization1.py b/gr-trellis/src/examples/python/test_viterbi_equalization1.py
index cb000d6852..16c130a78c 100755
--- a/gr-trellis/src/examples/python/test_viterbi_equalization1.py
+++ b/gr-trellis/src/examples/python/test_viterbi_equalization1.py
@@ -2,6 +2,7 @@
from gnuradio import gr
from gnuradio import trellis, digital, filter
+from gnuradio import analog
from gnuradio import eng_notation
import math
import sys
@@ -27,7 +28,7 @@ def run_test (f,Kb,bitspersymbol,K,channel,modulation,dimensionality,tot_constel
# CHANNEL
isi = filter.fir_filter_fff(1,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
skip = gr.skiphead(gr.sizeof_float, L) # skip the first L samples since you know they are coming from the L zero symbols