1 files changed, 858 insertions, 246 deletions
diff --git a/gr-digital/examples/ofdm/tx_ofdm.grc b/gr-digital/examples/ofdm/tx_ofdm.grc
index 80d7f7f9e4..368f16bd80 100644
--- a/gr-digital/examples/ofdm/tx_ofdm.grc
+++ b/gr-digital/examples/ofdm/tx_ofdm.grc
@@ -1,59 +1,27 @@
 <?xml version='1.0' encoding='ASCII'?>
 <flow_graph>
-  <timestamp>Sun Nov  3 18:45:28 2013</timestamp>
+  <timestamp>Wed Jul  9 15:49:47 2014</timestamp>
   <block>
-    <key>options</key>
+    <key>variable</key>
     <param>
       <key>id</key>
-      <value>tx_ofdm</value>
+      <value>sync_word2</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>title</key>
-      <value>OFDM Tx</value>
-    </param>
-    <param>
-      <key>author</key>
-      <value></value>
-    </param>
-    <param>
-      <key>description</key>
-      <value>Example of an OFDM Transmitter</value>
-    </param>
-    <param>
-      <key>window_size</key>
-      <value>1280, 1024</value>
-    </param>
-    <param>
-      <key>generate_options</key>
-      <value>wx_gui</value>
-    </param>
-    <param>
-      <key>category</key>
-      <value>Custom</value>
-    </param>
-    <param>
-      <key>run_options</key>
-      <value>run</value>
-    </param>
-    <param>
-      <key>run</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>max_nouts</key>
-      <value>0</value>
+      <key>value</key>
+      <value>[0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 0, 1, -1, 1, 1, 1, -1, 1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, -1, -1, -1, 0, 0, 0, 0, 0] </value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(0, -1)</value>
+      <value>(496, 128)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -64,7 +32,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>sync_word1</value>
+      <value>length_tag_key</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -72,11 +40,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>[0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 0., 0., 0., 0., 0.]</value>
+      <value>"packet_len"</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(352, 128)</value>
+      <value>(352, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -87,7 +59,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>sync_word2</value>
+      <value>samp_rate</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -95,11 +67,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>[0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 0, 1, -1, 1, 1, 1, -1, 1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, -1, -1, -1, 0, 0, 0, 0, 0] </value>
+      <value>100000</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(496, 128)</value>
+      <value>(255, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -110,7 +86,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>pilot_symbols</value>
+      <value>rolloff</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -118,11 +94,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>((1, 1, 1, -1,),)</value>
+      <value>0</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(601, 64)</value>
+      <value>(898, -1)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -133,7 +113,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>occupied_carriers</value>
+      <value>payload_mod</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -141,11 +121,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>(range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) + range(8, 21) + range(22, 27),)</value>
+      <value>digital.constellation_qpsk()</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(329, 64)</value>
+      <value>(734, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -156,7 +140,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>pilot_carriers</value>
+      <value>header_mod</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -164,11 +148,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>((-21, -7, 7, 21,),)</value>
+      <value>digital.constellation_bpsk()</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(480, 64)</value>
+      <value>(567, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -179,7 +167,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>header_formatter</value>
+      <value>packet_len</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -187,11 +175,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>digital.packet_header_ofdm(occupied_carriers, 1, length_tag_key)</value>
+      <value>96</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(708, 64)</value>
+      <value>(476, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -213,6 +205,10 @@
       <value>64</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(181, -1)</value>
     </param>
@@ -225,7 +221,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>packet_len</value>
+      <value>header_formatter</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -233,34 +229,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>96</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(476, 0)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>header_mod</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>digital.packet_header_ofdm(occupied_carriers, 1, length_tag_key)</value>
     </param>
     <param>
-      <key>value</key>
-      <value>digital.constellation_bpsk()</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(567, 0)</value>
+      <value>(708, 64)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -271,7 +248,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>payload_mod</value>
+      <value>pilot_carriers</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -279,11 +256,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>digital.constellation_qpsk()</value>
+      <value>((-21, -7, 7, 21,),)</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(734, 0)</value>
+      <value>(480, 64)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -294,7 +275,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>rolloff</value>
+      <value>occupied_carriers</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -302,11 +283,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>0</value>
+      <value>(range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) + range(8, 21) + range(22, 27),)</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(898, -1)</value>
+      <value>(329, 64)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -317,7 +302,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>samp_rate</value>
+      <value>pilot_symbols</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -325,11 +310,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>100000</value>
+      <value>((1, 1, 1, -1,),)</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(255, 0)</value>
+      <value>(601, 64)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -340,7 +329,7 @@
     <key>variable</key>
     <param>
       <key>id</key>
-      <value>length_tag_key</value>
+      <value>sync_word1</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -348,11 +337,15 @@
     </param>
     <param>
       <key>value</key>
-      <value>"packet_len"</value>
+      <value>[0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 0., 0., 0., 0., 0.]</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(352, 0)</value>
+      <value>(352, 128)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -397,6 +390,10 @@
       <value>import numpy</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(237, 93)</value>
     </param>
@@ -420,6 +417,10 @@
       <value>from gnuradio.digital.utils import tagged_streams</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(99, 93)</value>
     </param>
@@ -443,6 +444,10 @@
       <value>import random</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(3, 94)</value>
     </param>
@@ -528,6 +533,10 @@
       <value>1</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -536,6 +545,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(212, 450)</value>
     </param>
@@ -625,6 +638,10 @@
       <value>1</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -633,6 +650,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(414, 548)</value>
     </param>
@@ -664,6 +685,10 @@
       <value>1</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -672,6 +697,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(209, 747)</value>
     </param>
@@ -711,6 +740,10 @@
       <value>1</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -719,6 +752,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(214, 376)</value>
     </param>
@@ -758,6 +795,10 @@
       <value>True</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -766,6 +807,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(13, 220)</value>
     </param>
@@ -805,6 +850,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -813,6 +862,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(510, 428)</value>
     </param>
@@ -848,6 +901,10 @@
       <value>length_tag_key</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -856,6 +913,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(632, 564)</value>
     </param>
@@ -887,6 +948,10 @@
       <value>False</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -895,6 +960,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(372, 747)</value>
     </param>
@@ -930,6 +999,10 @@
       <value>False</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -938,6 +1011,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(710, 301)</value>
     </param>
@@ -961,6 +1038,14 @@
       <value>header_formatter.formatter()</value>
     </param>
     <param>
+      <key>len_tag_key</key>
+      <value>"packet_len"</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -969,6 +1054,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(703, 242)</value>
     </param>
@@ -1004,6 +1093,10 @@
       <value>length_tag_key</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -1012,6 +1105,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(193, 235)</value>
     </param>
@@ -1108,6 +1205,10 @@
       <value>length_tag_key</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -1116,6 +1217,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(430, 235)</value>
     </param>
@@ -1159,6 +1264,10 @@
       <value>length_tag_key</value>
     </param>
     <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -1167,6 +1276,10 @@
       <value>0</value>
     </param>
     <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
       <value>(192, 540)</value>
     </param>
@@ -1222,78 +1335,141 @@
     </param>
   </block>
   <block>
-    <key>wxgui_scopesink2</key>
+    <key>digital_ofdm_rx</key>
     <param>
       <key>id</key>
-      <value>wxgui_scopesink2_0</value>
+      <value>digital_ofdm_rx_0</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>fft_len</key>
+      <value>fft_len</value>
     </param>
     <param>
-      <key>title</key>
-      <value>Scope Plot</value>
+      <key>cp_len</key>
+      <value>fft_len/4</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>packet_len_key</key>
+      <value>"length"</value>
     </param>
     <param>
-      <key>v_scale</key>
-      <value>0</value>
+      <key>occupied_carriers</key>
+      <value>occupied_carriers</value>
     </param>
     <param>
-      <key>v_offset</key>
-      <value>0</value>
+      <key>pilot_carriers</key>
+      <value>pilot_carriers</value>
     </param>
     <param>
-      <key>t_scale</key>
-      <value>0</value>
+      <key>pilot_symbols</key>
+      <value>pilot_symbols</value>
     </param>
     <param>
-      <key>ac_couple</key>
-      <value>False</value>
+      <key>sync_word1</key>
+      <value>sync_word1</value>
+    </param>
+    <param>
+      <key>sync_word2</key>
+      <value>sync_word2</value>
+    </param>
+    <param>
+      <key>header_mod</key>
+      <value>"BPSK"</value>
+    </param>
+    <param>
+      <key>payload_mod</key>
+      <value>"QPSK"</value>
     </param>
     <param>
-      <key>xy_mode</key>
+      <key>scramble_bits</key>
       <value>False</value>
     </param>
     <param>
-      <key>num_inputs</key>
-      <value>1</value>
+      <key>log</key>
+      <value>False</value>
     </param>
     <param>
-      <key>win_size</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>grid_pos</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>notebook</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(439, 823)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>channels_channel_model</key>
+    <param>
+      <key>id</key>
+      <value>channels_channel_model_0</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>noise_voltage</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>freq_offset</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>epsilon</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>taps</key>
+      <value>1.0 + 1.0j</value>
+    </param>
+    <param>
+      <key>seed</key>
+      <value>0</value>
     </param>
     <param>
-      <key>trig_mode</key>
-      <value>wxgui.TRIG_MODE_AUTO</value>
+      <key>block_tags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>y_axis_label</key>
-      <value>Counts</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(992, 716)</value>
+      <value>(193, 858)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1301,10 +1477,10 @@
     </param>
   </block>
   <block>
-    <key>wxgui_fftsink2</key>
+    <key>blocks_tag_debug</key>
     <param>
       <key>id</key>
-      <value>wxgui_fftsink2_0</value>
+      <value>blocks_tag_debug_0</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -1312,83 +1488,90 @@
     </param>
     <param>
       <key>type</key>
-      <value>complex</value>
+      <value>byte</value>
     </param>
     <param>
-      <key>title</key>
-      <value>FFT Plot</value>
+      <key>name</key>
+      <value>Rx'd Packets</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>samp_rate</value>
+      <key>filter</key>
+      <value>""</value>
     </param>
     <param>
-      <key>baseband_freq</key>
-      <value>0</value>
+      <key>num_inputs</key>
+      <value>1</value>
     </param>
     <param>
-      <key>y_per_div</key>
-      <value>10</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
     <param>
-      <key>y_divs</key>
-      <value>10</value>
+      <key>display</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ref_level</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ref_scale</key>
-      <value>2.0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>fft_size</key>
-      <value>1024</value>
+      <key>_coordinate</key>
+      <value>(689, 889)</value>
     </param>
     <param>
-      <key>fft_rate</key>
-      <value>15</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
-      <key>peak_hold</key>
-      <value>False</value>
+      <key>id</key>
+      <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>average</key>
-      <value>False</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>avg_alpha</key>
-      <value>0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>win</key>
-      <value>None</value>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>win_size</key>
-      <value></value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
     <param>
-      <key>grid_pos</key>
+      <key>ignoretag</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>notebook</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>freqvar</key>
-      <value>None</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(994, 810)</value>
+      <value>(559, 747)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1396,125 +1579,238 @@
     </param>
   </block>
   <block>
-    <key>digital_ofdm_rx</key>
+    <key>qtgui_freq_sink_x</key>
     <param>
       <key>id</key>
-      <value>digital_ofdm_rx_0</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>fft_len</key>
-      <value>fft_len</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>cp_len</key>
-      <value>fft_len/4</value>
+      <key>name</key>
+      <value>FFT Plot</value>
     </param>
     <param>
-      <key>packet_len_key</key>
-      <value>"length"</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>occupied_carriers</key>
-      <value>occupied_carriers</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>pilot_carriers</key>
-      <value>pilot_carriers</value>
+      <key>fc</key>
+      <value>0</value>
     </param>
     <param>
-      <key>pilot_symbols</key>
-      <value>pilot_symbols</value>
+      <key>bw</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>sync_word1</key>
-      <value>sync_word1</value>
+      <key>autoscale</key>
+      <value>True</value>
     </param>
     <param>
-      <key>sync_word2</key>
-      <value>sync_word2</value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>header_mod</key>
-      <value>"BPSK"</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
     <param>
-      <key>payload_mod</key>
-      <value>"QPSK"</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>scramble_bits</key>
-      <value>False</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>log</key>
-      <value>False</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(439, 823)</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
     <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>noise_voltage</key>
-      <value>0.0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>freq_offset</key>
-      <value>0.0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>epsilon</key>
+      <key>alpha2</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>1.0 + 1.0j</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>seed</key>
-      <value>0</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>block_tags</key>
-      <value>True</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color10</key>
+      <value>"dark blue"</value>
+    </param>
+    <param>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(193, 858)</value>
+      <value>(966, 841)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1522,10 +1818,10 @@
     </param>
   </block>
   <block>
-    <key>blocks_tag_debug</key>
+    <key>qtgui_time_sink_x</key>
     <param>
       <key>id</key>
-      <value>blocks_tag_debug_0</value>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -1533,31 +1829,323 @@
     </param>
     <param>
       <key>type</key>
-      <value>byte</value>
+      <value>complex</value>
     </param>
     <param>
       <key>name</key>
-      <value>Rx'd Packets</value>
+      <value>Scope Plot</value>
     </param>
     <param>
-      <key>num_inputs</key>
+      <key>size</key>
+      <value>1024</value>
+    </param>
+    <param>
+      <key>srate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>autoscale</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>ymax</key>
       <value>1</value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>display</key>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>entags</key>
       <value>True</value>
     </param>
     <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_delay</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>label1</key>
+      <value>Scope Plot</value>
+    </param>
+    <param>
+      <key>width1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>alpha1</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>style2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>marker2</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>style3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>marker3</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>style4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>marker4</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>style5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>marker5</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>style6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>marker6</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>style7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>marker7</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>style8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>marker8</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>style9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>marker9</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>label10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>style10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>marker10</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(689, 889)</value>
+      <value>(962, 714)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1565,38 +2153,62 @@
     </param>
   </block>
   <block>
-    <key>blocks_throttle</key>
+    <key>options</key>
     <param>
       <key>id</key>
-      <value>blocks_throttle_0</value>
+      <value>tx_ofdm</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>title</key>
+      <value>OFDM Tx</value>
     </param>
     <param>
-      <key>samples_per_second</key>
-      <value>samp_rate</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>description</key>
+      <value>Example of an OFDM Transmitter</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>window_size</key>
+      <value>1280, 1024</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>generate_options</key>
+      <value>qt_gui</value>
+    </param>
+    <param>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>run</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(559, 747)</value>
+      <value>(1, 0)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1682,18 +2294,6 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_throttle_0</source_block_id>
-    <sink_block_id>wxgui_scopesink2_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_throttle_0</source_block_id>
-    <sink_block_id>wxgui_fftsink2_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
     <source_block_id>blocks_stream_to_tagged_stream_0</source_block_id>
     <sink_block_id>digital_crc32_bb_0</sink_block_id>
     <source_key>0</source_key>
@@ -1747,4 +2347,16 @@
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
+  <connection>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
 </flow_graph>