<?xml version='1.0' encoding='ASCII'?>
<flow_graph>
<timestamp>Wed Apr 15 17:31:00 2009</timestamp>
<block>
<key>options</key>
<param>
<key>id</key>
<value>usrp2_dpsk_mod</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>title</key>
<value>USRP2 DPSK Modulation</value>
</param>
<param>
<key>author</key>
<value>Example</value>
</param>
<param>
<key>description</key>
<value>Generate a DPSK signal</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>realtime_scheduling</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(10, 10)</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>100e6/interp</value>
</param>
<param>
<key>_coordinate</key>
<value>(52, 166)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>usrp2_sink_xxxx</key>
<param>
<key>id</key>
<value>usrp2_sink_xxxx_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>interface</key>
<value></value>
</param>
<param>
<key>mac_addr</key>
<value></value>
</param>
<param>
<key>interpolation</key>
<value>interp</value>
</param>
<param>
<key>frequency</key>
<value>tun_freq</value>
</param>
<param>
<key>gain</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(1059, 56)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>gr_multiply_const_vxx</key>
<param>
<key>id</key>
<value>gr_multiply_const_vxx_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>const</key>
<value>ampl</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>_coordinate</key>
<value>(679, 58)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blks2_dxpsk_mod</key>
<param>
<key>id</key>
<value>blks2_dxpsk_mod_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>dqpsk</value>
</param>
<param>
<key>samples_per_symbol</key>
<value>samps_per_sym</value>
</param>
<param>
<key>excess_bw</key>
<value>0.35</value>
</param>
<param>
<key>gray_code</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(468, 55)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>interp</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>100</value>
</param>
<param>
<key>_coordinate</key>
<value>(31, 256)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>samps_per_sym</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>8</value>
</param>
<param>
<key>_coordinate</key>
<value>(126, 250)</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_0</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>256</value>
</param>
<param>
<key>num_samps</key>
<value>1000</value>
</param>
<param>
<key>repeat</key>
<value>True</value>
</param>
<param>
<key>_coordinate</key>
<value>(255, 39)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>ampl</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Amplitude</value>
</param>
<param>
<key>value</key>
<value>.1</value>
</param>
<param>
<key>min</key>
<value>0</value>
</param>
<param>
<key>max</key>
<value>1</value>
</param>
<param>
<key>num_steps</key>
<value>100</value>
</param>
<param>
<key>style</key>
<value>wx.SL_HORIZONTAL</value>
</param>
<param>
<key>converver</key>
<value>float_converter</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(246, 372)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>rx_freq_off</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>RX Freq Offset (Hz)</value>
</param>
<param>
<key>value</key>
<value>-20e3</value>
</param>
<param>
<key>min</key>
<value>-50e3</value>
</param>
<param>
<key>max</key>
<value>+50e3</value>
</param>
<param>
<key>num_steps</key>
<value>100</value>
</param>
<param>
<key>style</key>
<value>wx.SL_HORIZONTAL</value>
</param>
<param>
<key>converver</key>
<value>float_converter</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(247, 508)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
<key>id</key>
<value>tun_freq</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>USRP2 Freq (Hz)</value>
</param>
<param>
<key>value</key>
<value>2.45e9</value>
</param>
<param>
<key>min</key>
<value>2.4e9</value>
</param>
<param>
<key>max</key>
<value>2.5e9</value>
</param>
<param>
<key>num_steps</key>
<value>100</value>
</param>
<param>
<key>style</key>
<value>wx.SL_HORIZONTAL</value>
</param>
<param>
<key>converver</key>
<value>float_converter</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(49, 341)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>wxgui_constellationsink2</key>
<param>
<key>id</key>
<value>wxgui_constellationsink2_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>title</key>
<value>Constellation Plot</value>
</param>
<param>
<key>samp_rate</key>
<value>samp_rate</value>
</param>
<param>
<key>frame_rate</key>
<value>5</value>
</param>
<param>
<key>const_size</key>
<value>2048</value>
</param>
<param>
<key>M</key>
<value>4</value>
</param>
<param>
<key>theta</key>
<value>0</value>
</param>
<param>
<key>alpha</key>
<value>0.005</value>
</param>
<param>
<key>fmax</key>
<value>0.06</value>
</param>
<param>
<key>mu</key>
<value>0.5</value>
</param>
<param>
<key>gain_mu</key>
<value>0.005</value>
</param>
<param>
<key>symbol_rate</key>
<value>samp_rate/samps_per_sym</value>
</param>
<param>
<key>omega_limit</key>
<value>0.005</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(920, 202)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>wxgui_fftsink2</key>
<param>
<key>id</key>
<value>wxgui_fftsink2_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>title</key>
<value>FFT Plot</value>
</param>
<param>
<key>samp_rate</key>
<value>samp_rate</value>
</param>
<param>
<key>baseband_freq</key>
<value>tun_freq</value>
</param>
<param>
<key>y_per_div</key>
<value>10</value>
</param>
<param>
<key>ref_level</key>
<value>10</value>
</param>
<param>
<key>fft_size</key>
<value>1024</value>
</param>
<param>
<key>fft_rate</key>
<value>30</value>
</param>
<param>
<key>peak_hold</key>
<value>False</value>
</param>
<param>
<key>average</key>
<value>False</value>
</param>
<param>
<key>avg_alpha</key>
<value>0</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(691, 155)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>wxgui_scopesink2</key>
<param>
<key>id</key>
<value>wxgui_scopesink2_0</value>
</param>
<param>
<key>_enabled</key>
<value>False</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>title</key>
<value>Scope Plot</value>
</param>
<param>
<key>samp_rate</key>
<value>samp_rate</value>
</param>
<param>
<key>v_scale</key>
<value>0</value>
</param>
<param>
<key>t_scale</key>
<value>1e-6</value>
</param>
<param>
<key>ac_couple</key>
<value>False</value>
</param>
<param>
<key>xy_mode</key>
<value>True</value>
</param>
<param>
<key>num_inputs</key>
<value>1</value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(515, 272)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>usrp2_source_xxxx</key>
<param>
<key>id</key>
<value>usrp2_source_xxxx_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>interface</key>
<value>eth1</value>
</param>
<param>
<key>mac_addr</key>
<value></value>
</param>
<param>
<key>decimation</key>
<value>interp</value>
</param>
<param>
<key>frequency</key>
<value>tun_freq + rx_freq_off</value>
</param>
<param>
<key>gain</key>
<value>30</value>
</param>
<param>
<key>_coordinate</key>
<value>(270, 200)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<connection>
<source_block_id>random_source_x_0</source_block_id>
<sink_block_id>blks2_dxpsk_mod_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>blks2_dxpsk_mod_0</source_block_id>
<sink_block_id>gr_multiply_const_vxx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>gr_multiply_const_vxx_0</source_block_id>
<sink_block_id>usrp2_sink_xxxx_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>usrp2_source_xxxx_0</source_block_id>
<sink_block_id>wxgui_constellationsink2_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
<connection>
<source_block_id>usrp2_source_xxxx_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>usrp2_source_xxxx_0</source_block_id>
<sink_block_id>wxgui_fftsink2_0</sink_block_id>
<source_key>0</source_key>
<sink_key>0</sink_key>
</connection>
</flow_graph>