Replace own flowgraph by generated one

3 files changed, 3074 insertions, 160 deletions

diff --git a/README.md b/README.md
index 8a27f87..574c7dd 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,9 @@ against the source signal. The measurements are written into a CSV file.
 It's your job to ensure you don't overload the B200 input signal power (-15dBm
 last time I checked).
 
-First step is to gather some measurements:
+Before you can start, use gnuradio-companion to generate dual_tone.py from dual_tone.grc
+
+Then gather some measurements
 
     ./amplitude_ramp.py --ampl-start 0.15 --ampl-stop 0.5 --ampl-step 0.01 --num-meas 300 --txgain 77
 
diff --git a/amplitude_ramp.py b/amplitude_ramp.py
index 334bb86..6ae9326 100755
--- a/amplitude_ramp.py
+++ b/amplitude_ramp.py
@@ -31,13 +31,14 @@ import socket
 import struct
 import threading
 from Queue import Queue
+from dual_tone import dual_tone # our flowgraph!
 
 # TCP ports used to communicate between the flowgraph and the python script
 # The flowgraph interleaves 3 float streams :
 #  generator magnitude
 #  phase difference
 #  feedback magnitude
-TCP_PORT = 47009
+TCP_PORT = 47009 # must be the same as in dual_tone!
 
 def xrange(start, stop, step):
     x = start
@@ -45,145 +46,6 @@ def xrange(start, stop, step):
         yield x
         x += step
 
-class amplitude_ramp(gr.top_block):
-    def __init__(self, options):
-        gr.top_block.__init__(self, "Amplitude Ramp")
-
-        self.txgain = float(options.txgain)
-        self.source_ampl = float(options.ampl_start)
-
-        self.samp_rate = 4e6
-        self.rxgain = 0
-        self.freq = 222e6
-        self.decim = 4000
-
-        # Two-tone signal generator at 1kHz and 2kHz
-        self.analog_sig_source_x_0 = analog.sig_source_c(
-                self.samp_rate, analog.GR_COS_WAVE, 1000, self.source_ampl, 0)
-        self.analog_sig_source_x_1 = analog.sig_source_c(
-                self.samp_rate, analog.GR_COS_WAVE, 2000, self.source_ampl, 0)
-        self.blocks_add_xx_0 = blocks.add_vcc(1)
-
-        # Connects to both USRP output, mag and phase converter
-
-        self.uhd_usrp_sink_0 = uhd.usrp_sink(
-                "",
-                uhd.stream_args(
-                    cpu_format="fc32",
-                    channels=range(1),
-                    ),
-                )
-        self.uhd_usrp_sink_0.set_samp_rate(self.samp_rate)
-        self.uhd_usrp_sink_0.set_center_freq(self.freq, 0)
-        self.uhd_usrp_sink_0.set_gain(self.txgain, 0)
-
-        self.blocks_complex_to_mag_squared_0 = blocks.complex_to_mag_squared(1)
-
-        self.blocks_multiply_conjugate_cc_0 = blocks.multiply_conjugate_cc(1)
-        self.blocks_complex_to_arg_0 = blocks.complex_to_arg(1)
-
-        # mag goes to TCP interleaver, phase goes to complex multiplier
-        # and complex-to-arg
-
-        # Feedback from the USRP, goes to the subtractor after mag/phase
-        self.blocks_complex_to_mag_squared_1 = blocks.complex_to_mag_squared(1)
-        self.uhd_usrp_source_0 = uhd.usrp_source(
-                "",
-                uhd.stream_args(
-                    cpu_format="fc32",
-                    channels=range(1),
-                    ),
-                )
-        self.uhd_usrp_source_0.set_samp_rate(self.samp_rate)
-        self.uhd_usrp_source_0.set_center_freq(self.freq, 0)
-        self.uhd_usrp_source_0.set_gain(self.rxgain, 0)
-
-        # The interleaved takes gen mag, phase diff and feedback mag
-        # signals and puts them together. We need to decimate before we interleave
-        self.blocks_moving_average_gen = blocks.moving_average_ff(self.decim, 1, 4000)
-        self.fir_filter_gen = filter.fir_filter_fff(self.decim, ([1]))
-        self.fir_filter_gen.declare_sample_delay(0)
-
-        self.blocks_moving_average_phase = blocks.moving_average_ff(self.decim, 1, 4000)
-        self.fir_filter_phase = filter.fir_filter_fff(self.decim, ([1]))
-        self.fir_filter_phase.declare_sample_delay(0)
-
-        self.blocks_moving_average_feedback = blocks.moving_average_ff(self.decim, 1, 4000)
-        self.fir_filter_feedback = filter.fir_filter_fff(self.decim, ([1]))
-        self.fir_filter_feedback.declare_sample_delay(0)
-
-        self.blocks_interleave = blocks.interleave(gr.sizeof_float*1, 1)
-
-        self.blks2_tcp_sink_0 = grc_blks2.tcp_sink(
-                itemsize=gr.sizeof_float*1,
-                addr="127.0.0.1",
-                port=TCP_PORT,
-                server=True,
-                )
-
-        # Connect outgoing
-        self.connect((self.analog_sig_source_x_0, 0), (self.blocks_add_xx_0, 1))
-        self.connect((self.analog_sig_source_x_1, 0), (self.blocks_add_xx_0, 0))
-        self.connect((self.blocks_add_xx_0, 0), (self.blocks_complex_to_mag_squared_0, 0))
-        self.connect((self.blocks_add_xx_0, 0), (self.uhd_usrp_sink_0, 0))
-        self.connect((self.blocks_add_xx_0, 0), (self.blocks_multiply_conjugate_cc_0, 0))
-
-        self.connect((self.blocks_complex_to_mag_squared_0, 0),
-                (self.blocks_moving_average_gen, 0))
-        self.connect((self.blocks_moving_average_gen, 0),
-                (self.fir_filter_gen, 0))
-        self.connect((self.fir_filter_gen, 0), (self.blocks_interleave, 0))
-
-        # Connect feedback
-        self.connect((self.uhd_usrp_source_0, 0),
-                (self.blocks_complex_to_mag_squared_1, 0))
-        self.connect((self.uhd_usrp_source_0, 0),
-                (self.blocks_multiply_conjugate_cc_0, 1))
-
-        # Connect phase comparator
-        self.connect((self.blocks_multiply_conjugate_cc_0, 0),
-                (self.blocks_complex_to_arg_0, 0))
-        self.connect((self.blocks_complex_to_arg_0, 0),
-                (self.blocks_moving_average_phase, 0))
-        self.connect((self.blocks_moving_average_phase, 0), (self.fir_filter_phase, 0))
-        self.connect((self.fir_filter_phase, 0), (self.blocks_interleave, 1))
-
-        self.connect((self.blocks_complex_to_mag_squared_1, 0),
-                (self.blocks_moving_average_feedback, 0))
-        self.connect((self.blocks_moving_average_feedback, 0),
-                (self.fir_filter_feedback, 0))
-        self.connect((self.fir_filter_feedback, 0),
-                (self.blocks_interleave, 2))
-
-        # connect interleaver output to TCP socket
-        self.connect((self.blocks_interleave, 0), (self.blks2_tcp_sink_0, 0))
-
-
-    def get_txgain(self):
-        return self.txgain
-
-    def set_txgain(self, txgain):
-        self.txgain = txgain
-        self.uhd_usrp_sink_0.set_gain(self.txgain, 0)
-
-    def get_source_ampl(self):
-        return self.source_ampl
-
-    def set_source_ampl(self, source_ampl):
-        print("Set amplitude to {}".format(source_ampl))
-        self.source_ampl = source_ampl
-        self.analog_sig_source_x_0.set_amplitude(self.source_ampl)
-        self.analog_sig_source_x_1.set_amplitude(self.source_ampl)
-
-    def get_freq(self):
-        return self.freq
-
-    def set_freq(self, freq):
-        self.freq = freq
-        self.uhd_usrp_sink_0.set_center_freq(self.freq, 0)
-        self.uhd_usrp_source_0.set_center_freq(self.freq, 0)
-
-
 class RampGenerator(threading.Thread):
     def __init__(self, options):
         threading.Thread.__init__(self)
@@ -293,6 +155,11 @@ parser.add_argument('--num-meas-to-skip',
         help='After each amplitude change, ignore num-meas-to-skip measurements',
         required=False)
 
+parser.add_argument('--decim',
+        default='4000',
+        help='Interval in samples between when to take the average of the measurements',
+        required=False)
+
 cli_args = parser.parse_args()
 
 rampgen = RampGenerator(cli_args)
@@ -300,27 +167,35 @@ rampgen.start()
 
 # this blocks until the flowgraph is up and running, i.e. all sockets
 # got a connection
-top = amplitude_ramp(cli_args)
+top = dual_tone()
+
+top.set_decim(int(cli_args.decim))
+top.set_txgain = float(cli_args.txgain)
+top.set_rxgain = 0
 top.set_source_ampl(float(cli_args.ampl_start))
+
+time.sleep(.5)
+
 top.start()
 
-while True:
-    event = rampgen.wait_on_event()
-    if event == "done":
-        measurements = rampgen.wait_on_event()
-        fd = open("measurements.csv", "w")
-        for m in measurements:
-            fd.write(",".join("{}".format(x) for x in m) + "\n")
-        fd.close()
-        break
-    elif event == "quit":
-        break
-    else:
-        top.set_source_ampl(event)
-        rampgen.confirm_source_ampl_updated()
-
-top.stop()
-print("Wait for completion")
-top.wait()
+try:
+    while True:
+        event = rampgen.wait_on_event()
+        if event == "done":
+            measurements = rampgen.wait_on_event()
+            fd = open("measurements.csv", "w")
+            for m in measurements:
+                fd.write(",".join("{}".format(x) for x in m) + "\n")
+            fd.close()
+            break
+        elif event == "quit":
+            break
+        else:
+            top.set_source_ampl(event)
+            rampgen.confirm_source_ampl_updated()
+finally:
+    top.stop()
+    print("Wait for completion")
+    top.wait()
 
 print("Done")
diff --git a/dual_tone.grc b/dual_tone.grc
new file mode 100644
index 0000000..87acc38
--- /dev/null
+++ b/dual_tone.grc
@@ -0,0 +1,3037 @@
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.9'?>
+<flow_graph>
+  <timestamp>Wed Oct 28 18:49:28 2015</timestamp>
+  <block>
+    <key>options</key>
+    <param>
+      <key>author</key>
+      <value></value>
+    </param>
+    <param>
+      <key>window_size</key>
+      <value></value>
+    </param>
+    <param>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>description</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 8)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>generate_options</key>
+      <value>no_gui</value>
+    </param>
+    <param>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dual_tone</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value></value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 165)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>decim</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>4000</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(88, 237)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>freq</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>222e6</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 301)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>rxgain</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 85)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>4e6</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(88, 165)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>source_ampl</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 237)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>txgain</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
+    <param>
+      <key>amp</key>
+      <value>source_ampl</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freq</key>
+      <value>2000</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(240, 160)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>analog_sig_source_x_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>offset</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>waveform</key>
+      <value>analog.GR_COS_WAVE</value>
+    </param>
+  </block>
+  <block>
+    <key>analog_sig_source_x</key>
+    <param>
+      <key>amp</key>
+      <value>source_ampl</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freq</key>
+      <value>1000</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(240, 48)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>analog_sig_source_x_0_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>offset</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>waveform</key>
+      <value>analog.GR_COS_WAVE</value>
+    </param>
+  </block>
+  <block>
+    <key>blks2_tcp_sink</key>
+    <param>
+      <key>addr</key>
+      <value>127.0.0.1</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1064, 358)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blks2_tcp_sink_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>server</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>port</key>
+      <value>47009</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_add_xx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(448, 161)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_add_xx_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>num_inputs</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_complex_to_arg</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(744, 289)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_complex_to_arg_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_complex_to_mag_squared</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(552, 177)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_complex_to_mag_squared_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_complex_to_mag_squared</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(376, 457)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_complex_to_mag_squared_0_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_interleave</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>blocksize</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(944, 345)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_interleave_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>num_streams</key>
+      <value>3</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_moving_average_xx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(552, 358)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_moving_average_xx_0</value>
+    </param>
+    <param>
+      <key>length</key>
+      <value>decim</value>
+    </param>
+    <param>
+      <key>max_iter</key>
+      <value>4000</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>scale</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>float</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_moving_average_xx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(728, 158)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_moving_average_xx_0_0</value>
+    </param>
+    <param>
+      <key>length</key>
+      <value>decim</value>
+    </param>
+    <param>
+      <key>max_iter</key>
+      <value>4000</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>scale</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>float</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_moving_average_xx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(552, 438)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_moving_average_xx_0_1</value>
+    </param>
+    <param>
+      <key>length</key>
+      <value>decim</value>
+    </param>
+    <param>
+      <key>max_iter</key>
+      <value>4000</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>scale</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>float</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_multiply_conjugate_cc</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(568, 273)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_multiply_conjugate_cc_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>fir_filter_xxx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>decim</key>
+      <value>decim</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(712, 365)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>fir_filter_xxx_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>samp_delay</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>taps</key>
+      <value>[1]</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>fff</value>
+    </param>
+  </block>
+  <block>
+    <key>fir_filter_xxx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>decim</key>
+      <value>decim</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(888, 165)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>fir_filter_xxx_0_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>samp_delay</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>taps</key>
+      <value>[1]</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>fff</value>
+    </param>
+  </block>
+  <block>
+    <key>fir_filter_xxx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>decim</key>
+      <value>decim</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(712, 445)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>fir_filter_xxx_0_1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>samp_delay</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>taps</key>
+      <value>[1]</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>fff</value>
+    </param>
+  </block>
+  <block>
+    <key>uhd_usrp_sink</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ant0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw0</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq0</key>
+      <value>freq</value>
+    </param>
+    <param>
+      <key>norm_gain0</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain0</key>
+      <value>txgain</value>
+    </param>
+    <param>
+      <key>ant10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain10</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant11</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain11</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant12</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant13</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain13</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant14</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain14</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant15</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain15</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant16</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain16</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant17</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain17</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant18</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain18</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant19</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain19</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain1</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant20</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain20</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant21</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain21</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant22</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain22</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant23</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain23</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant24</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain24</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant25</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain25</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant26</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain26</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant27</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain27</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant28</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain28</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant29</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain29</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain2</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant30</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw30</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq30</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain30</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain30</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant31</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain31</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw3</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq3</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain3</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain3</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain4</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain5</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain6</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain7</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain8</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw9</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq9</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain9</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain9</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>clock_rate</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dev_addr</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>dev_args</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(560, 63)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>uhd_usrp_sink_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>fc32</value>
+    </param>
+    <param>
+      <key>clock_source0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>nchan</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>num_mboards</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>hide_cmd_port</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>stream_args</key>
+      <value></value>
+    </param>
+    <param>
+      <key>stream_chans</key>
+      <value>[]</value>
+    </param>
+    <param>
+      <key>sync</key>
+      <value></value>
+    </param>
+    <param>
+      <key>len_tag_name</key>
+      <value></value>
+    </param>
+    <param>
+      <key>otw</key>
+      <value></value>
+    </param>
+  </block>
+  <block>
+    <key>uhd_usrp_source</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ant0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw0</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq0</key>
+      <value>freq</value>
+    </param>
+    <param>
+      <key>dc_offs_enb0</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb0</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain0</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain0</key>
+      <value>rxgain</value>
+    </param>
+    <param>
+      <key>ant10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb10</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb10</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain10</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant11</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb11</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb11</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain11</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain11</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant12</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb12</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb12</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain12</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant13</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb13</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb13</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain13</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant14</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb14</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb14</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain14</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant15</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb15</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb15</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain15</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain15</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant16</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb16</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb16</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain16</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain16</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant17</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb17</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb17</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain17</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain17</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant18</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb18</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb18</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain18</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain18</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant19</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb19</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb19</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain19</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain19</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb1</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb1</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain1</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant20</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb20</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb20</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain20</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain20</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant21</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb21</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb21</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain21</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain21</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant22</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb22</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb22</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain22</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain22</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant23</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb23</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb23</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain23</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain23</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant24</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb24</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb24</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain24</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain24</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant25</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb25</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb25</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain25</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain25</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant26</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb26</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb26</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain26</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain26</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant27</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb27</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb27</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain27</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain27</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant28</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb28</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb28</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain28</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain28</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant29</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb29</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb29</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain29</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain29</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb2</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb2</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain2</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant30</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw30</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq30</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb30</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb30</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain30</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain30</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant31</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb31</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb31</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain31</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw3</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq3</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb3</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb3</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain3</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain3</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb4</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb4</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain4</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb5</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb5</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain5</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb6</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb6</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain6</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb7</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb7</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain7</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb8</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb8</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain8</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw9</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq9</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb9</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb9</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>norm_gain9</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain9</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>clock_rate</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dev_addr</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>dev_args</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(240, 286)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>uhd_usrp_source_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>clock_source0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source0</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>clock_source7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>sd_spec7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>time_source7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>nchan</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>num_mboards</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>fc32</value>
+    </param>
+    <param>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>hide_cmd_port</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>stream_args</key>
+      <value></value>
+    </param>
+    <param>
+      <key>stream_chans</key>
+      <value>[]</value>
+    </param>
+    <param>
+      <key>sync</key>
+      <value></value>
+    </param>
+    <param>
+      <key>otw</key>
+      <value></value>
+    </param>
+  </block>
+  <connection>
+    <source_block_id>analog_sig_source_x_0</source_block_id>
+    <sink_block_id>blocks_add_xx_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>1</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>analog_sig_source_x_0_0</source_block_id>
+    <sink_block_id>blocks_add_xx_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_add_xx_0</source_block_id>
+    <sink_block_id>blocks_complex_to_mag_squared_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_add_xx_0</source_block_id>
+    <sink_block_id>blocks_multiply_conjugate_cc_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_add_xx_0</source_block_id>
+    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_complex_to_arg_0</source_block_id>
+    <sink_block_id>blocks_moving_average_xx_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_complex_to_mag_squared_0</source_block_id>
+    <sink_block_id>blocks_moving_average_xx_0_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_complex_to_mag_squared_0_0</source_block_id>
+    <sink_block_id>blocks_moving_average_xx_0_1</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_interleave_0</source_block_id>
+    <sink_block_id>blks2_tcp_sink_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_moving_average_xx_0</source_block_id>
+    <sink_block_id>fir_filter_xxx_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_moving_average_xx_0_0</source_block_id>
+    <sink_block_id>fir_filter_xxx_0_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_moving_average_xx_0_1</source_block_id>
+    <sink_block_id>fir_filter_xxx_0_1</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_multiply_conjugate_cc_0</source_block_id>
+    <sink_block_id>blocks_complex_to_arg_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>fir_filter_xxx_0</source_block_id>
+    <sink_block_id>blocks_interleave_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>1</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>fir_filter_xxx_0_0</source_block_id>
+    <sink_block_id>blocks_interleave_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>fir_filter_xxx_0_1</source_block_id>
+    <sink_block_id>blocks_interleave_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>2</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>blocks_complex_to_mag_squared_0_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>blocks_multiply_conjugate_cc_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>1</sink_key>
+  </connection>
+</flow_graph>