<?xml version='1.0' encoding='ASCII'?> <flow_graph> <timestamp>Thu Jul 24 14:28:06 2008</timestamp> <block> <key>options</key> <param> <key>id</key> <value>ber_sim</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>title</key> <value>BER Simulation</value> </param> <param> <key>author</key> <value>Example</value> </param> <param> <key>description</key> <value>Adjust the noise and constellation... see what happens!</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>_coordinate</key> <value>(16, 10)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_add_vxx</key> <param> <key>id</key> <value>gr_add_vxx</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>(652, 395)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_constellationsink2</key> <param> <key>id</key> <value>wxgui_constellationsink2</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>title</key> <value>"Constellation: "+str(const)</value> </param> <param> <key>samp_rate</key> <value>samp_rate</value> </param> <param> <key>frame_decim</key> <value>15</value> </param> <param> <key>marker</key> <value>set_format_plus</value> </param> <param> <key>grid_pos</key> <value>2, 0, 1, 1</value> </param> <param> <key>_coordinate</key> <value>(907, 334)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_noise_source_x</key> <param> <key>id</key> <value>gr_noise_source_x</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>noise_type</key> <value>gr.GR_GAUSSIAN</value> </param> <param> <key>amp</key> <value>noise</value> </param> <param> <key>seed</key> <value>42</value> </param> <param> <key>_coordinate</key> <value>(235, 379)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_chunks_to_symbols_xx</key> <param> <key>id</key> <value>gr_chunks_to_symbols_xx</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>in_type</key> <value>byte</value> </param> <param> <key>out_type</key> <value>complex</value> </param> <param> <key>symbol_table</key> <value>const</value> </param> <param> <key>dimension</key> <value>1</value> </param> <param> <key>_coordinate</key> <value>(360, 237)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_numbersink2</key> <param> <key>id</key> <value>wxgui_numbersink2</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>float</value> </param> <param> <key>title</key> <value>BER</value> </param> <param> <key>units</key> <value>%</value> </param> <param> <key>samp_rate</key> <value>samp_rate</value> </param> <param> <key>base_value</key> <value>0.0</value> </param> <param> <key>min_value</key> <value>0.0</value> </param> <param> <key>max_value</key> <value>1.0</value> </param> <param> <key>factor</key> <value>100</value> </param> <param> <key>decimal_places</key> <value>4</value> </param> <param> <key>ref_level</key> <value>0</value> </param> <param> <key>number_rate</key> <value>15</value> </param> <param> <key>avg_alpha</key> <value>0</value> </param> <param> <key>options</key> <value>none</value> </param> <param> <key>show_gauge</key> <value>False</value> </param> <param> <key>grid_pos</key> <value>1, 0, 1, 1</value> </param> <param> <key>_coordinate</key> <value>(1062, 11)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_throttle</key> <param> <key>id</key> <value>gr_throttle</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>byte</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>(397, 27)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>blks2_error_rate</key> <param> <key>id</key> <value>blks2_error_rate</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>"BER"</value> </param> <param> <key>win_size</key> <value>1000000</value> </param> <param> <key>bits_per_symbol</key> <value>int(math.log(len(const))/math.log(2))</value> </param> <param> <key>_coordinate</key> <value>(670, 41)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_constellation_decoder_cb</key> <param> <key>id</key> <value>gr_constellation_decoder_cb</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>sym_position</key> <value>const</value> </param> <param> <key>sym_value_out</key> <value>range(len(const))</value> </param> <param> <key>_coordinate</key> <value>(708, 224)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>random_source_x</key> <param> <key>id</key> <value>random_source_x</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>byte</value> </param> <param> <key>min</key> <value>0</value> </param> <param> <key>max</key> <value>len(const)</value> </param> <param> <key>num_samps</key> <value>1000000</value> </param> <param> <key>repeat</key> <value>False</value> </param> <param> <key>_coordinate</key> <value>(15, 244)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>noise</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>.25</value> </param> <param> <key>_coordinate</key> <value>(18, 386)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>const</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>1+1j, 1-1j, -1-1j, -1+1j</value> </param> <param> <key>_coordinate</key> <value>(16, 461)</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>50e3</value> </param> <param> <key>_coordinate</key> <value>(20, 168)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>import</key> <param> <key>id</key> <value>import</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>import</key> <value>import math</value> </param> <param> <key>_coordinate</key> <value>(138, 168)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <connection> <source_block_id>blks2_error_rate</source_block_id> <sink_block_id>wxgui_numbersink2</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_throttle</source_block_id> <sink_block_id>blks2_error_rate</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_constellation_decoder_cb</source_block_id> <sink_block_id>blks2_error_rate</sink_block_id> <source_key>0</source_key> <sink_key>1</sink_key> </connection> <connection> <source_block_id>gr_add_vxx</source_block_id> <sink_block_id>gr_constellation_decoder_cb</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_chunks_to_symbols_xx</source_block_id> <sink_block_id>gr_add_vxx</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_noise_source_x</source_block_id> <sink_block_id>gr_add_vxx</sink_block_id> <source_key>0</source_key> <sink_key>1</sink_key> </connection> <connection> <source_block_id>gr_add_vxx</source_block_id> <sink_block_id>wxgui_constellationsink2</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>random_source_x</source_block_id> <sink_block_id>gr_throttle</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>random_source_x</source_block_id> <sink_block_id>gr_chunks_to_symbols_xx</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> </flow_graph>