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+<?xml version='1.0' encoding='ASCII'?>
+<flow_graph>
+ <timestamp>Tue May 7 15:15:56 2013</timestamp>
+ <block>
+ <key>options</key>
+ <param>
+ <key>id</key>
+ <value>rx_ofdm</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>title</key>
+ <value>OFDM Rx</value>
+ </param>
+ <param>
+ <key>author</key>
+ <value></value>
+ </param>
+ <param>
+ <key>description</key>
+ <value>Example of an OFDM receiver</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>prompt</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>_coordinate</key>
+ <value>(0, -1)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>import</key>
+ <param>
+ <key>id</key>
+ <value>import_1</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>import</key>
+ <value>from gnuradio.digital.utils import tagged_streams</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(163, 0)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>variable</key>
+ <param>
+ <key>id</key>
+ <value>fft_len</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>value</key>
+ <value>64</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(301, -1)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>variable</key>
+ <param>
+ <key>id</key>
+ <value>length_tag_name</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>value</key>
+ <value>"frame_len"</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(367, -1)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>variable</key>
+ <param>
+ <key>id</key>
+ <value>payload_mod</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>value</key>
+ <value>digital.constellation_qpsk()</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(648, 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>
+ </param>
+ <param>
+ <key>value</key>
+ <value>digital.constellation_bpsk()</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(490, 0)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>variable</key>
+ <param>
+ <key>id</key>
+ <value>header_formatter</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>value</key>
+ <value>digital.packet_header_ofdm(occupied_carriers, 1, length_tag_name)</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(811, -1)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>variable</key>
+ <param>
+ <key>id</key>
+ <value>occupied_carriers</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </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>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(598, 64)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>variable</key>
+ <param>
+ <key>id</key>
+ <value>pilot_carriers</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>value</key>
+ <value>((-21, -7, 7, 21,),)</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(751, 64)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>variable</key>
+ <param>
+ <key>id</key>
+ <value>pilot_symbols</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>value</key>
+ <value>((1, 1, 1, -1,),)</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(875, 65)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>variable</key>
+ <param>
+ <key>id</key>
+ <value>sync_word2</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>value</key>
+ <value>(0, 0, 0, 0, 0, 1, 1, -1.0, -1, 1.0, 1, 1.0, -1, -1.0, -1, 1.0, 1, -1.0, 1, 1.0, 1, -1.0, -1, -1.0, -1, 1.0, -1, 1.0, -1, 1.0, 1, -1.0, 0, 1.0, 1, -1.0, 1, 1.0, -1, -1.0, 1, -1.0, -1, -1.0, 1, 1.0, 1, -1.0, 1, 1.0, -1, 1.0, -1, -1.0, -1, 1.0, 1, -1.0, 0, 0, 0, 0, 0, 0)</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(457, 64)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>variable</key>
+ <param>
+ <key>id</key>
+ <value>sync_word1</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>value</key>
+ <value>(0, 0, 0, 0, 0, 0, 0, -1.0, 0, 1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, -1.0, 0, 1.0, 0, 1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, -1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, 0, 0, 0, 0, 0)</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(313, 64)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>variable</key>
+ <param>
+ <key>id</key>
+ <value>samp_rate</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>value</key>
+ <value>3200000</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(218, 64)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>blocks_tag_debug</key>
+ <param>
+ <key>id</key>
+ <value>blocks_tag_debug_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>type</key>
+ <value>byte</value>
+ </param>
+ <param>
+ <key>name</key>
+ <value>Rx Packets</value>
+ </param>
+ <param>
+ <key>num_inputs</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>vlen</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>display</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(1101, 791)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>digital_constellation_decoder_cb</key>
+ <param>
+ <key>id</key>
+ <value>digital_constellation_decoder_cb_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>constellation</key>
+ <value>payload_mod.base()</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(879, 799)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>digital_ofdm_serializer_vcc</key>
+ <param>
+ <key>id</key>
+ <value>digital_ofdm_serializer_vcc_1</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>fft_len</key>
+ <value>fft_len</value>
+ </param>
+ <param>
+ <key>occupied_carriers</key>
+ <value>occupied_carriers</value>
+ </param>
+ <param>
+ <key>len_tag_key</key>
+ <value>length_tag_key</value>
+ </param>
+ <param>
+ <key>packet_len_tag_key</key>
+ <value>""</value>
+ </param>
+ <param>
+ <key>symbols_skipped</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>input_is_shifted</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(653, 761)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>fft_vxx</key>
+ <param>
+ <key>id</key>
+ <value>fft_vxx_0_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>type</key>
+ <value>complex</value>
+ </param>
+ <param>
+ <key>fft_size</key>
+ <value>fft_len</value>
+ </param>
+ <param>
+ <key>forward</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>window</key>
+ <value></value>
+ </param>
+ <param>
+ <key>shift</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>nthreads</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(214, 769)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>virtual_source</key>
+ <param>
+ <key>id</key>
+ <value>virtual_source_0_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>stream_id</key>
+ <value>Payload Stream</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(0, 799)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>virtual_sink</key>
+ <param>
+ <key>id</key>
+ <value>virtual_sink_0_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>stream_id</key>
+ <value>Payload Stream</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(968, 374)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>virtual_sink</key>
+ <param>
+ <key>id</key>
+ <value>virtual_sink_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>stream_id</key>
+ <value>Header Stream</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(969, 305)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>blocks_multiply_xx</key>
+ <param>
+ <key>id</key>
+ <value>blocks_multiply_xx_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>type</key>
+ <value>complex</value>
+ </param>
+ <param>
+ <key>num_inputs</key>
+ <value>2</value>
+ </param>
+ <param>
+ <key>vlen</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(798, 137)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>analog_frequency_modulator_fc</key>
+ <param>
+ <key>id</key>
+ <value>analog_frequency_modulator_fc_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>sensitivity</key>
+ <value>-2.0/fft_len</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(579, 134)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>gr_delay</key>
+ <param>
+ <key>id</key>
+ <value>gr_delay_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>type</key>
+ <value>complex</value>
+ </param>
+ <param>
+ <key>delay</key>
+ <value>fft_len+fft_len/4</value>
+ </param>
+ <param>
+ <key>num_ports</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>vlen</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(422, 220)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>digital_ofdm_sync_sc_cfb</key>
+ <param>
+ <key>id</key>
+ <value>digital_ofdm_sync_sc_cfb_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>fft_len</key>
+ <value>fft_len</value>
+ </param>
+ <param>
+ <key>cp_len</key>
+ <value>fft_len/4</value>
+ </param>
+ <param>
+ <key>use_even_carriers</key>
+ <value>False</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(244, 137)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>blocks_throttle</key>
+ <param>
+ <key>id</key>
+ <value>blocks_throttle_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>type</key>
+ <value>complex</value>
+ </param>
+ <param>
+ <key>samples_per_second</key>
+ <value>samp_rate</value>
+ </param>
+ <param>
+ <key>vlen</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(186, 235)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>analog_noise_source_x</key>
+ <param>
+ <key>id</key>
+ <value>analog_noise_source_x_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>type</key>
+ <value>complex</value>
+ </param>
+ <param>
+ <key>noise_type</key>
+ <value>analog.GR_GAUSSIAN</value>
+ </param>
+ <param>
+ <key>amp</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>seed</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(0, 220)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>uhd_usrp_source</key>
+ <param>
+ <key>id</key>
+ <value>uhd_usrp_source_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>False</value>
+ </param>
+ <param>
+ <key>type</key>
+ <value>fc32</value>
+ </param>
+ <param>
+ <key>otw</key>
+ <value></value>
+ </param>
+ <param>
+ <key>stream_args</key>
+ <value></value>
+ </param>
+ <param>
+ <key>dev_addr</key>
+ <value></value>
+ </param>
+ <param>
+ <key>sync</key>
+ <value></value>
+ </param>
+ <param>
+ <key>clock_rate</key>
+ <value>0.0</value>
+ </param>
+ <param>
+ <key>num_mboards</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>clock_source0</key>
+ <value></value>
+ </param>
+ <param>
+ <key>time_source0</key>
+ <value></value>
+ </param>
+ <param>
+ <key>sd_spec0</key>
+ <value></value>
+ </param>
+ <param>
+ <key>clock_source1</key>
+ <value></value>
+ </param>
+ <param>
+ <key>time_source1</key>
+ <value></value>
+ </param>
+ <param>
+ <key>sd_spec1</key>
+ <value></value>
+ </param>
+ <param>
+ <key>clock_source2</key>
+ <value></value>
+ </param>
+ <param>
+ <key>time_source2</key>
+ <value></value>
+ </param>
+ <param>
+ <key>sd_spec2</key>
+ <value></value>
+ </param>
+ <param>
+ <key>clock_source3</key>
+ <value></value>
+ </param>
+ <param>
+ <key>time_source3</key>
+ <value></value>
+ </param>
+ <param>
+ <key>sd_spec3</key>
+ <value></value>
+ </param>
+ <param>
+ <key>clock_source4</key>
+ <value></value>
+ </param>
+ <param>
+ <key>time_source4</key>
+ <value></value>
+ </param>
+ <param>
+ <key>sd_spec4</key>
+ <value></value>
+ </param>
+ <param>
+ <key>clock_source5</key>
+ <value></value>
+ </param>
+ <param>
+ <key>time_source5</key>
+ <value></value>
+ </param>
+ <param>
+ <key>sd_spec5</key>
+ <value></value>
+ </param>
+ <param>
+ <key>clock_source6</key>
+ <value></value>
+ </param>
+ <param>
+ <key>time_source6</key>
+ <value></value>
+ </param>
+ <param>
+ <key>sd_spec6</key>
+ <value></value>
+ </param>
+ <param>
+ <key>clock_source7</key>
+ <value></value>
+ </param>
+ <param>
+ <key>time_source7</key>
+ <value></value>
+ </param>
+ <param>
+ <key>sd_spec7</key>
+ <value></value>
+ </param>
+ <param>
+ <key>nchan</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>samp_rate</key>
+ <value>samp_rate</value>
+ </param>
+ <param>
+ <key>center_freq0</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain0</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant0</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw0</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq1</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain1</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant1</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw1</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq2</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain2</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant2</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw2</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq3</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain3</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant3</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw3</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq4</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain4</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant4</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw4</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq5</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain5</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant5</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw5</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq6</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain6</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant6</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw6</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq7</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain7</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant7</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw7</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq8</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain8</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant8</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw8</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq9</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain9</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant9</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw9</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq10</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain10</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant10</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw10</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq11</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain11</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant11</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw11</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq12</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain12</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant12</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw12</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq13</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain13</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant13</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw13</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq14</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain14</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant14</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw14</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq15</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain15</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant15</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw15</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq16</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain16</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant16</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw16</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq17</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain17</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant17</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw17</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq18</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain18</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant18</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw18</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq19</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain19</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant19</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw19</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq20</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain20</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant20</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw20</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq21</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain21</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant21</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw21</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq22</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain22</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant22</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw22</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq23</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain23</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant23</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw23</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq24</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain24</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant24</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw24</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq25</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain25</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant25</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw25</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq26</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain26</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant26</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw26</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq27</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain27</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant27</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw27</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq28</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain28</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant28</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw28</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq29</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain29</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant29</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw29</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq30</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain30</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant30</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw30</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>center_freq31</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>gain31</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>ant31</key>
+ <value></value>
+ </param>
+ <param>
+ <key>bw31</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(0, 135)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>digital_ofdm_frame_equalizer_vcvc</key>
+ <param>
+ <key>id</key>
+ <value>digital_ofdm_frame_equalizer_vcvc_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>fft_len</key>
+ <value>fft_len</value>
+ </param>
+ <param>
+ <key>equalizer</key>
+ <value>digital.ofdm_equalizer_simpledfe(fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols, 2).base()</value>
+ </param>
+ <param>
+ <key>len_tag_key</key>
+ <value>length_tag_key</value>
+ </param>
+ <param>
+ <key>propagate_channel_state</key>
+ <value>False</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(422, 776)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>digital_header_payload_demux</key>
+ <param>
+ <key>id</key>
+ <value>digital_header_payload_demux_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>header_len</key>
+ <value>3</value>
+ </param>
+ <param>
+ <key>items_per_symbol</key>
+ <value>fft_len</value>
+ </param>
+ <param>
+ <key>guard_interval</key>
+ <value>fft_len/4</value>
+ </param>
+ <param>
+ <key>length_tag_key</key>
+ <value>length_tag_name</value>
+ </param>
+ <param>
+ <key>trigger_tag_key</key>
+ <value>""</value>
+ </param>
+ <param>
+ <key>output_symbols</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>type</key>
+ <value>complex</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(678, 298)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>digital_packet_headerparser_b</key>
+ <param>
+ <key>id</key>
+ <value>digital_packet_headerparser_b_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>header_formatter</key>
+ <value>header_formatter.formatter()</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(915, 495)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>90</value>
+ </param>
+ </block>
+ <block>
+ <key>digital_ofdm_serializer_vcc</key>
+ <param>
+ <key>id</key>
+ <value>digital_ofdm_serializer_vcc_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>fft_len</key>
+ <value>fft_len</value>
+ </param>
+ <param>
+ <key>occupied_carriers</key>
+ <value>occupied_carriers</value>
+ </param>
+ <param>
+ <key>len_tag_key</key>
+ <value>length_tag_name</value>
+ </param>
+ <param>
+ <key>packet_len_tag_key</key>
+ <value>""</value>
+ </param>
+ <param>
+ <key>symbols_skipped</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>input_is_shifted</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(245, 643)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>digital_constellation_decoder_cb</key>
+ <param>
+ <key>id</key>
+ <value>digital_constellation_decoder_cb_0_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>constellation</key>
+ <value>header_mod.base()</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(461, 681)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>virtual_source</key>
+ <param>
+ <key>id</key>
+ <value>virtual_source_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>stream_id</key>
+ <value>Header Stream</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(0, 543)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>fft_vxx</key>
+ <param>
+ <key>id</key>
+ <value>fft_vxx_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>type</key>
+ <value>complex</value>
+ </param>
+ <param>
+ <key>fft_size</key>
+ <value>fft_len</value>
+ </param>
+ <param>
+ <key>forward</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>window</key>
+ <value></value>
+ </param>
+ <param>
+ <key>shift</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>nthreads</key>
+ <value>1</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(213, 513)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>digital_ofdm_chanest_vcvc</key>
+ <param>
+ <key>id</key>
+ <value>digital_ofdm_chanest_vcvc_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>sync_symbol1</key>
+ <value>sync_word1</value>
+ </param>
+ <param>
+ <key>sync_symbol2</key>
+ <value>sync_word2</value>
+ </param>
+ <param>
+ <key>n_data_symbols</key>
+ <value>2</value>
+ </param>
+ <param>
+ <key>eq_noise_red_len</key>
+ <value>0</value>
+ </param>
+ <param>
+ <key>max_carr_offset</key>
+ <value>-1</value>
+ </param>
+ <param>
+ <key>force_one_symbol</key>
+ <value>False</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(427, 505)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <block>
+ <key>digital_ofdm_frame_equalizer_vcvc</key>
+ <param>
+ <key>id</key>
+ <value>digital_ofdm_frame_equalizer_vcvc_0_0</value>
+ </param>
+ <param>
+ <key>_enabled</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>fft_len</key>
+ <value>fft_len</value>
+ </param>
+ <param>
+ <key>equalizer</key>
+ <value>digital.ofdm_equalizer_simpledfe(fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols).base()</value>
+ </param>
+ <param>
+ <key>len_tag_key</key>
+ <value>length_tag_name</value>
+ </param>
+ <param>
+ <key>propagate_channel_state</key>
+ <value>True</value>
+ </param>
+ <param>
+ <key>_coordinate</key>
+ <value>(704, 520)</value>
+ </param>
+ <param>
+ <key>_rotation</key>
+ <value>0</value>
+ </param>
+ </block>
+ <connection>
+ <source_block_id>digital_ofdm_frame_equalizer_vcvc_0_0</source_block_id>
+ <sink_block_id>digital_ofdm_serializer_vcc_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>virtual_source_0</source_block_id>
+ <sink_block_id>fft_vxx_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>fft_vxx_0</source_block_id>
+ <sink_block_id>digital_ofdm_chanest_vcvc_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_ofdm_chanest_vcvc_0</source_block_id>
+ <sink_block_id>digital_ofdm_frame_equalizer_vcvc_0_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_packet_headerparser_b_0</source_block_id>
+ <sink_block_id>digital_header_payload_demux_0</sink_block_id>
+ <source_key>header_data</source_key>
+ <sink_key>header_data</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_constellation_decoder_cb_0_0</source_block_id>
+ <sink_block_id>digital_packet_headerparser_b_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_ofdm_serializer_vcc_0</source_block_id>
+ <sink_block_id>digital_constellation_decoder_cb_0_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_constellation_decoder_cb_0</source_block_id>
+ <sink_block_id>blocks_tag_debug_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>fft_vxx_0_0</source_block_id>
+ <sink_block_id>digital_ofdm_frame_equalizer_vcvc_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_ofdm_frame_equalizer_vcvc_0</source_block_id>
+ <sink_block_id>digital_ofdm_serializer_vcc_1</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>virtual_source_0_0</source_block_id>
+ <sink_block_id>fft_vxx_0_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_ofdm_serializer_vcc_1</source_block_id>
+ <sink_block_id>digital_constellation_decoder_cb_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_header_payload_demux_0</source_block_id>
+ <sink_block_id>virtual_sink_0_0</sink_block_id>
+ <source_key>1</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_header_payload_demux_0</source_block_id>
+ <sink_block_id>virtual_sink_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>digital_ofdm_sync_sc_cfb_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>gr_delay_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>digital_ofdm_sync_sc_cfb_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>gr_delay_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>analog_noise_source_x_0</source_block_id>
+ <sink_block_id>blocks_throttle_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>analog_frequency_modulator_fc_0</source_block_id>
+ <sink_block_id>blocks_multiply_xx_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_ofdm_sync_sc_cfb_0</source_block_id>
+ <sink_block_id>analog_frequency_modulator_fc_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>gr_delay_0</source_block_id>
+ <sink_block_id>blocks_multiply_xx_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>1</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>digital_ofdm_sync_sc_cfb_0</source_block_id>
+ <sink_block_id>digital_header_payload_demux_0</sink_block_id>
+ <source_key>1</source_key>
+ <sink_key>1</sink_key>
+ </connection>
+ <connection>
+ <source_block_id>blocks_multiply_xx_0</source_block_id>
+ <sink_block_id>digital_header_payload_demux_0</sink_block_id>
+ <source_key>0</source_key>
+ <sink_key>0</sink_key>
+ </connection>
+</flow_graph>