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authorNao Pross <np@0hm.ch>2021-12-21 00:32:06 +0100
committerNao Pross <np@0hm.ch>2021-12-21 00:32:06 +0100
commit1de862c5e2ac6e2baa76daf9fbe6b64050da12fc (patch)
treeaa3f52261a3e1f0e1e2b359be8dd1435cca89135 /doc/thesis/figures/data
parentAdd data and flowgraph for (broken) QAM on hardware (diff)
downloadFading-1de862c5e2ac6e2baa76daf9fbe6b64050da12fc.tar.gz
Fading-1de862c5e2ac6e2baa76daf9fbe6b64050da12fc.zip
Add more data for QAM, fix colormap
Diffstat (limited to '')
-rw-r--r--doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.datbin0 -> 4539896 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.datbin0 -> 3447912 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_nlos_etsi_doppler5.datbin0 -> 3857296 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_nlos_etsi_doppler70.datbin0 -> 5823256 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.datbin0 -> 1134648 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.datbin0 -> 861648 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_nlos_etsi_doppler5.datbin0 -> 964000 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_nlos_etsi_doppler70.datbin0 -> 1455488 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.datbin0 -> 1134360 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.datbin0 -> 861480 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_nlos_etsi_doppler5.datbin0 -> 963720 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_nlos_etsi_doppler70.datbin0 -> 1455480 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.datbin0 -> 1134648 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.datbin0 -> 861648 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_nlos_etsi_doppler5.datbin0 -> 964000 bytes
-rw-r--r--doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_nlos_etsi_doppler70.datbin0 -> 1455488 bytes
-rw-r--r--doc/thesis/figures/data/qam_hw_lab.py12
-rw-r--r--doc/thesis/figures/data/qam_sim_dynamic_grblock_los_etsi_doppler5_k5.py35
-rw-r--r--doc/thesis/figures/data/qam_sim_dynamic_grblock_los_etsi_doppler70_k5.py35
-rw-r--r--doc/thesis/figures/data/qam_sim_dynamic_grblock_nlos_etsi_doppler5.py35
-rw-r--r--doc/thesis/figures/data/qam_sim_dynamic_grblock_nlos_etsi_doppler70.py31
-rw-r--r--doc/thesis/figures/data/qpsk_hw_lab.py6
-rw-r--r--doc/thesis/figures/data/qpsk_sim_dynamic_grblock_los_etsi_doppler5_k5.py6
-rw-r--r--doc/thesis/figures/data/qpsk_sim_dynamic_grblock_los_etsi_doppler70_k5.py6
-rw-r--r--doc/thesis/figures/data/qpsk_sim_dynamic_grblock_nlos_etsi_doppler5.py6
-rw-r--r--doc/thesis/figures/data/qpsk_sim_dynamic_grblock_nlos_etsi_doppler70.py6
26 files changed, 169 insertions, 9 deletions
diff --git a/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat b/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat
new file mode 100644
index 0000000..49070d5
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat b/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat
new file mode 100644
index 0000000..13a6201
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat b/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat
new file mode 100644
index 0000000..207213c
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat b/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat
new file mode 100644
index 0000000..3a01a87
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/channel_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat b/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat
new file mode 100644
index 0000000..c235697
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat b/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat
new file mode 100644
index 0000000..59d13f2
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat b/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat
new file mode 100644
index 0000000..db59982
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat b/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat
new file mode 100644
index 0000000..2f0b72c
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/equalized_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat b/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat
new file mode 100644
index 0000000..ecd61c9
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat b/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat
new file mode 100644
index 0000000..7dc562e
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat b/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat
new file mode 100644
index 0000000..3a48c8a
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat b/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat
new file mode 100644
index 0000000..e6ead95
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/locked_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat b/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat
new file mode 100644
index 0000000..32ed9d0
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_los_etsi_doppler5_k5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat b/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat
new file mode 100644
index 0000000..f642f4f
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_los_etsi_doppler70_k5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat b/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat
new file mode 100644
index 0000000..a1418dd
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_nlos_etsi_doppler5.dat
Binary files differ
diff --git a/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat b/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat
new file mode 100644
index 0000000..842c36a
--- /dev/null
+++ b/doc/thesis/figures/data/flowgraphs/synchronized_qam_sim_dynamic_grblock_nlos_etsi_doppler70.dat
Binary files differ
diff --git a/doc/thesis/figures/data/qam_hw_lab.py b/doc/thesis/figures/data/qam_hw_lab.py
index d49cfd1..fde109a 100644
--- a/doc/thesis/figures/data/qam_hw_lab.py
+++ b/doc/thesis/figures/data/qam_hw_lab.py
@@ -7,24 +7,28 @@ import numpy as np
samples = utils.load_samples(__file__)
# range of samples we want to show
-start = 20e3
-end = start +400
+start = 25e3
+end = start +800
# select every second samples
-select_samples = lambda arr: arr[int(start):int(end):6]
+select_samples = lambda arr: arr[int(start):int(end):8]
values = map(select_samples, samples)
# split into imaginary and real parts
get_parts = lambda v: (np.real(v), np.imag(v))
parts = [p for v in map(get_parts, values) for p in v]
+# add 'samplenr' metadata
+parts += [np.arange(0, len(parts[0]))]
+
# zip data and add header
data = np.array(list(zip(*parts)))
headers = [
"channel_re", "channel_im",
"synchronized_re", "synchronized_im",
"equalized_re", "equalized_im",
- "locked_re", "locked_im"
+ "locked_re", "locked_im",
+ "samplenr",
]
# save to file
diff --git a/doc/thesis/figures/data/qam_sim_dynamic_grblock_los_etsi_doppler5_k5.py b/doc/thesis/figures/data/qam_sim_dynamic_grblock_los_etsi_doppler5_k5.py
new file mode 100644
index 0000000..a644402
--- /dev/null
+++ b/doc/thesis/figures/data/qam_sim_dynamic_grblock_los_etsi_doppler5_k5.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+
+import utils
+import numpy as np
+
+# get array of samples [channel, synchronized, equalized, locked]
+samples = utils.load_samples(__file__)
+
+# range of samples we want to show
+start = 10e3
+end = start +40000
+
+# select every second samples
+select_samples = lambda arr: arr[int(start):int(end):200]
+values = map(select_samples, samples)
+
+# split into imaginary and real parts
+get_parts = lambda v: (np.real(v), np.imag(v))
+parts = [p for v in map(get_parts, values) for p in v]
+
+# add 'samplenr' metadata
+parts += [np.arange(0, len(parts[0]))]
+
+# zip data and add header
+data = np.concatenate([np.array(list(zip(*parts)))])
+headers = [
+ "channel_re", "channel_im",
+ "synchronized_re", "synchronized_im",
+ "equalized_re", "equalized_im",
+ "locked_re", "locked_im",
+ "samplenr",
+]
+
+# save to file
+utils.save_to_file(__file__, data, headers)
diff --git a/doc/thesis/figures/data/qam_sim_dynamic_grblock_los_etsi_doppler70_k5.py b/doc/thesis/figures/data/qam_sim_dynamic_grblock_los_etsi_doppler70_k5.py
new file mode 100644
index 0000000..8f35d50
--- /dev/null
+++ b/doc/thesis/figures/data/qam_sim_dynamic_grblock_los_etsi_doppler70_k5.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+
+import utils
+import numpy as np
+
+# get array of samples [channel, synchronized, equalized, locked]
+samples = utils.load_samples(__file__)
+
+# range of samples we want to show
+start = 25e3
+end = start +1e3
+
+# select every second samples
+select_samples = lambda arr: arr[int(start):int(end):8]
+values = map(select_samples, samples)
+
+# split into imaginary and real parts
+get_parts = lambda v: (np.real(v), np.imag(v))
+parts = [p for v in map(get_parts, values) for p in v]
+
+# add 'samplenr' metadata
+parts += [np.arange(0, len(parts[0]))]
+
+# zip data and add header
+data = np.array(list(zip(*parts)))
+headers = [
+ "channel_re", "channel_im",
+ "synchronized_re", "synchronized_im",
+ "equalized_re", "equalized_im",
+ "locked_re", "locked_im",
+ "samplenr"
+]
+
+# save to file
+utils.save_to_file(__file__, data, headers)
diff --git a/doc/thesis/figures/data/qam_sim_dynamic_grblock_nlos_etsi_doppler5.py b/doc/thesis/figures/data/qam_sim_dynamic_grblock_nlos_etsi_doppler5.py
new file mode 100644
index 0000000..e434809
--- /dev/null
+++ b/doc/thesis/figures/data/qam_sim_dynamic_grblock_nlos_etsi_doppler5.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+
+import utils
+import numpy as np
+
+# get array of samples [channel, synchronized, equalized, locked]
+samples = utils.load_samples(__file__)
+
+# range of samples we want to show
+start = 20e3
+end = start +10000
+
+# select every second samples
+select_samples = lambda arr: arr[int(start):int(end):100]
+values = map(select_samples, samples)
+
+# split into imaginary and real parts
+get_parts = lambda v: (np.real(v), np.imag(v))
+parts = [p for v in map(get_parts, values) for p in v]
+
+# add 'samplenr' metadata
+parts += [np.arange(0, len(parts[0]))]
+
+# zip data and add header
+data = np.array(list(zip(*parts)))
+headers = [
+ "channel_re", "channel_im",
+ "synchronized_re", "synchronized_im",
+ "equalized_re", "equalized_im",
+ "locked_re", "locked_im",
+ "samplenr"
+]
+
+# save to file
+utils.save_to_file(__file__, data, headers)
diff --git a/doc/thesis/figures/data/qam_sim_dynamic_grblock_nlos_etsi_doppler70.py b/doc/thesis/figures/data/qam_sim_dynamic_grblock_nlos_etsi_doppler70.py
new file mode 100644
index 0000000..5b93750
--- /dev/null
+++ b/doc/thesis/figures/data/qam_sim_dynamic_grblock_nlos_etsi_doppler70.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+
+import utils
+import numpy as np
+
+# get array of samples [channel, synchronized, equalized, locked]
+samples = utils.load_samples(__file__)
+
+# range of samples we want to show
+start = 1e3
+end = start +800
+
+# select every second samples
+select_samples = lambda arr: arr[int(start):int(end):8]
+values = map(select_samples, samples)
+
+# split into imaginary and real parts
+get_parts = lambda v: (np.real(v), np.imag(v))
+parts = [p for v in map(get_parts, values) for p in v]
+
+# zip data and add header
+data = np.array(list(zip(*parts)))
+headers = [
+ "channel_re", "channel_im",
+ "synchronized_re", "synchronized_im",
+ "equalized_re", "equalized_im",
+ "locked_re", "locked_im"
+]
+
+# save to file
+utils.save_to_file(__file__, data, headers)
diff --git a/doc/thesis/figures/data/qpsk_hw_lab.py b/doc/thesis/figures/data/qpsk_hw_lab.py
index 741f32f..f6f816b 100644
--- a/doc/thesis/figures/data/qpsk_hw_lab.py
+++ b/doc/thesis/figures/data/qpsk_hw_lab.py
@@ -18,13 +18,17 @@ values = map(select_samples, samples)
get_parts = lambda v: (np.real(v), np.imag(v))
parts = [p for v in map(get_parts, values) for p in v]
+# add 'samplenr' metadata
+parts += [np.arange(0, len(parts[0]))]
+
# zip data and add header
data = np.array(list(zip(*parts)))
headers = [
"channel_re", "channel_im",
"synchronized_re", "synchronized_im",
"equalized_re", "equalized_im",
- "locked_re", "locked_im"
+ "locked_re", "locked_im",
+ "samplenr",
]
# save to file
diff --git a/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_los_etsi_doppler5_k5.py b/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_los_etsi_doppler5_k5.py
index f621fd0..819800f 100644
--- a/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_los_etsi_doppler5_k5.py
+++ b/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_los_etsi_doppler5_k5.py
@@ -18,13 +18,17 @@ values = map(select_samples, samples)
get_parts = lambda v: (np.real(v), np.imag(v))
parts = [p for v in map(get_parts, values) for p in v]
+# add 'samplenr' metadata
+parts += [np.arange(0, len(parts[0]))]
+
# zip data and add header
data = np.array(list(zip(*parts)))
headers = [
"channel_re", "channel_im",
"synchronized_re", "synchronized_im",
"equalized_re", "equalized_im",
- "locked_re", "locked_im"
+ "locked_re", "locked_im",
+ "samplenr"
]
# save to file
diff --git a/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_los_etsi_doppler70_k5.py b/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_los_etsi_doppler70_k5.py
index c82fbd1..d2147df 100644
--- a/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_los_etsi_doppler70_k5.py
+++ b/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_los_etsi_doppler70_k5.py
@@ -18,13 +18,17 @@ values = map(select_samples, samples)
get_parts = lambda v: (np.real(v), np.imag(v))
parts = [p for v in map(get_parts, values) for p in v]
+# add 'samplenr' metadata
+parts += [np.arange(0, len(parts[0]))]
+
# zip data and add header
data = np.array(list(zip(*parts)))
headers = [
"channel_re", "channel_im",
"synchronized_re", "synchronized_im",
"equalized_re", "equalized_im",
- "locked_re", "locked_im"
+ "locked_re", "locked_im",
+ "samplenr"
]
# save to file
diff --git a/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_nlos_etsi_doppler5.py b/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_nlos_etsi_doppler5.py
index c82fbd1..15e8fd0 100644
--- a/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_nlos_etsi_doppler5.py
+++ b/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_nlos_etsi_doppler5.py
@@ -18,13 +18,17 @@ values = map(select_samples, samples)
get_parts = lambda v: (np.real(v), np.imag(v))
parts = [p for v in map(get_parts, values) for p in v]
+# add 'samplenr' metadata
+parts += [np.arange(0, len(parts[0]))]
+
# zip data and add header
data = np.array(list(zip(*parts)))
headers = [
"channel_re", "channel_im",
"synchronized_re", "synchronized_im",
"equalized_re", "equalized_im",
- "locked_re", "locked_im"
+ "locked_re", "locked_im",
+ "samplenr",
]
# save to file
diff --git a/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_nlos_etsi_doppler70.py b/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_nlos_etsi_doppler70.py
index eae2afc..5194407 100644
--- a/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_nlos_etsi_doppler70.py
+++ b/doc/thesis/figures/data/qpsk_sim_dynamic_grblock_nlos_etsi_doppler70.py
@@ -18,13 +18,17 @@ values = map(select_samples, samples)
get_parts = lambda v: (np.real(v), np.imag(v))
parts = [p for v in map(get_parts, values) for p in v]
+# add 'samplenr' metadata
+parts += [np.arange(0, len(parts[0]))]
+
# zip data and add header
data = np.array(list(zip(*parts)))
headers = [
"channel_re", "channel_im",
"synchronized_re", "synchronized_im",
"equalized_re", "equalized_im",
- "locked_re", "locked_im"
+ "locked_re", "locked_im",
+ "samplenr"
]
# save to file