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demo_ofdm.grc
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<?xml version='1.0' encoding='ASCII'?>
<flow_graph>
<timestamp>Thu Aug 1 15:11:44 2013</timestamp>
<block>
<key>options</key>
<param>
<key>id</key>
<value>demo_ofdm</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>title</key>
<value></value>
</param>
<param>
<key>author</key>
<value>mettus</value>
</param>
<param>
<key>description</key>
<value></value>
</param>
<param>
<key>window_size</key>
<value>1280, 1024</value>
</param>
<param>
<key>generate_options</key>
<value>qt_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>(10, 10)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>const_size</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>64</value>
</param>
<param>
<key>_coordinate</key>
<value>(11, 89)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>fft_size</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>1024</value>
</param>
<param>
<key>_coordinate</key>
<value>(99, 89)</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>32000</value>
</param>
<param>
<key>_coordinate</key>
<value>(11, 151)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable</key>
<param>
<key>id</key>
<value>k</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>value</key>
<value>math.log(const_size)/math.log(2)</value>
</param>
<param>
<key>_coordinate</key>
<value>(100, 151)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>import</key>
<param>
<key>id</key>
<value>import_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>import</key>
<value>import math</value>
</param>
<param>
<key>_coordinate</key>
<value>(168, 153)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_qtgui_range</key>
<param>
<key>id</key>
<value>q_ofs</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Q offset</value>
</param>
<param>
<key>value</key>
<value>0</value>
</param>
<param>
<key>start</key>
<value>-1</value>
</param>
<param>
<key>stop</key>
<value>1</value>
</param>
<param>
<key>step</key>
<value>0.001</value>
</param>
<param>
<key>widget</key>
<value>counter_slider</value>
</param>
<param>
<key>orient</key>
<value>Qt.Horizontal</value>
</param>
<param>
<key>min_len</key>
<value>200</value>
</param>
<param>
<key>gui_hint</key>
<value>2,1,1,1</value>
</param>
<param>
<key>_coordinate</key>
<value>(936, 9)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_qtgui_range</key>
<param>
<key>id</key>
<value>i_ofs</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>I offset</value>
</param>
<param>
<key>value</key>
<value>0</value>
</param>
<param>
<key>start</key>
<value>-1</value>
</param>
<param>
<key>stop</key>
<value>1</value>
</param>
<param>
<key>step</key>
<value>0.001</value>
</param>
<param>
<key>widget</key>
<value>counter_slider</value>
</param>
<param>
<key>orient</key>
<value>Qt.Horizontal</value>
</param>
<param>
<key>min_len</key>
<value>200</value>
</param>
<param>
<key>gui_hint</key>
<value>2,0,1,1</value>
</param>
<param>
<key>_coordinate</key>
<value>(829, 9)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_qtgui_range</key>
<param>
<key>id</key>
<value>phasebal</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>IQ Phase Imbalance</value>
</param>
<param>
<key>value</key>
<value>0</value>
</param>
<param>
<key>start</key>
<value>0</value>
</param>
<param>
<key>stop</key>
<value>45</value>
</param>
<param>
<key>step</key>
<value>0.1</value>
</param>
<param>
<key>widget</key>
<value>counter_slider</value>
</param>
<param>
<key>orient</key>
<value>Qt.Horizontal</value>
</param>
<param>
<key>min_len</key>
<value>200</value>
</param>
<param>
<key>gui_hint</key>
<value>1,1,1,1</value>
</param>
<param>
<key>_coordinate</key>
<value>(675, 9)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_qtgui_range</key>
<param>
<key>id</key>
<value>magbal</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>IQ Magnitude Imbalance</value>
</param>
<param>
<key>value</key>
<value>0</value>
</param>
<param>
<key>start</key>
<value>0</value>
</param>
<param>
<key>stop</key>
<value>10</value>
</param>
<param>
<key>step</key>
<value>0.1</value>
</param>
<param>
<key>widget</key>
<value>counter_slider</value>
</param>
<param>
<key>orient</key>
<value>Qt.Horizontal</value>
</param>
<param>
<key>min_len</key>
<value>200</value>
</param>
<param>
<key>gui_hint</key>
<value>1,0,1,1</value>
</param>
<param>
<key>_coordinate</key>
<value>(497, 9)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_qtgui_range</key>
<param>
<key>id</key>
<value>freq_offset</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Frequency Offset</value>
</param>
<param>
<key>value</key>
<value>0</value>
</param>
<param>
<key>start</key>
<value>-0.5</value>
</param>
<param>
<key>stop</key>
<value>0.5</value>
</param>
<param>
<key>step</key>
<value>0.001</value>
</param>
<param>
<key>widget</key>
<value>counter_slider</value>
</param>
<param>
<key>orient</key>
<value>Qt.Horizontal</value>
</param>
<param>
<key>min_len</key>
<value>200</value>
</param>
<param>
<key>gui_hint</key>
<value>0,1,1,1</value>
</param>
<param>
<key>_coordinate</key>
<value>(357, 8)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_qtgui_range</key>
<param>
<key>id</key>
<value>phase_noise_mag</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>Phase Noise Mag (dB)</value>
</param>
<param>
<key>value</key>
<value>-100</value>
</param>
<param>
<key>start</key>
<value>-100</value>
</param>
<param>
<key>stop</key>
<value>0</value>
</param>
<param>
<key>step</key>
<value>1</value>
</param>
<param>
<key>widget</key>
<value>counter_slider</value>
</param>
<param>
<key>orient</key>
<value>Qt.Horizontal</value>
</param>
<param>
<key>min_len</key>
<value>200</value>
</param>
<param>
<key>gui_hint</key>
<value>0, 0, 1,1</value>
</param>
<param>
<key>_coordinate</key>
<value>(194, 7)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>qtgui_time_sink_x</key>
<param>
<key>id</key>
<value>qtgui_time_sink_x_0_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>name</key>
<value></value>
</param>
<param>
<key>size</key>
<value>1024</value>
</param>
<param>
<key>srate</key>
<value>samp_rate</value>
</param>
<param>
<key>ymin</key>
<value>-1</value>
</param>
<param>
<key>ymax</key>
<value>1</value>
</param>
<param>
<key>nconnections</key>
<value>1</value>
</param>
<param>
<key>update_time</key>
<value>0.10</value>
</param>
<param>
<key>gui_hint</key>
<value>4,1,1,1</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(1102, 249)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_qtgui_range</key>
<param>
<key>id</key>
<value>beta</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>label</key>
<value>k3 (IP3)</value>
</param>
<param>
<key>value</key>
<value>0</value>
</param>
<param>
<key>start</key>
<value>-10</value>
</param>
<param>
<key>stop</key>
<value>0</value>
</param>
<param>
<key>step</key>
<value>0.01</value>
</param>
<param>
<key>widget</key>
<value>counter_slider</value>
</param>
<param>
<key>orient</key>
<value>Qt.Horizontal</value>
</param>
<param>
<key>min_len</key>
<value>200</value>
</param>
<param>
<key>gui_hint</key>
<value>3,0,1,1</value>
</param>
<param>
<key>_coordinate</key>
<value>(1042, 8)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_float_to_complex</key>
<param>
<key>id</key>
<value>blocks_float_to_complex_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(237, 424)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>fft_vxx</key>
<param>
<key>id</key>
<value>fft_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_size</value>
</param>
<param>
<key>forward</key>
<value>True</value>
</param>
<param>
<key>window</key>
<value>fft_size*[1.0/math.sqrt(fft_size)]</value>
</param>
<param>
<key>shift</key>
<value>False</value>
</param>
<param>
<key>nthreads</key>
<value>1</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(689, 150)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>fft_vxx</key>
<param>
<key>id</key>
<value>fft_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_size</value>
</param>
<param>
<key>forward</key>
<value>False</value>
</param>
<param>
<key>window</key>
<value>fft_size*[1.0/math.sqrt(fft_size)]</value>
</param>
<param>
<key>shift</key>
<value>False</value>
</param>
<param>
<key>nthreads</key>
<value>1</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(565, 485)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_multiply_const_vxx</key>
<param>
<key>id</key>
<value>blocks_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>1.0/fft_size</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(854, 571)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_vector_to_stream</key>
<param>
<key>id</key>
<value>blocks_vector_to_stream_0_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>num_items</key>
<value>fft_size</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(833, 468)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>channels_impairments</key>
<param>
<key>id</key>
<value>channels_impairments_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>phase_noise_mag</key>
<value>phase_noise_mag</value>
</param>
<param>
<key>magbal</key>
<value>magbal</value>
</param>
<param>
<key>phasebal</key>
<value>phasebal</value>
</param>
<param>
<key>q_ofs</key>
<value>q_ofs</value>
</param>
<param>
<key>i_ofs</key>
<value>i_ofs</value>
</param>
<param>
<key>freq_offset</key>
<value>freq_offset</value>
</param>
<param>
<key>gamma</key>
<value>0</value>
</param>
<param>
<key>beta</key>
<value>beta</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(1074, 460)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_stream_to_vector</key>
<param>
<key>id</key>
<value>blocks_stream_to_vector_0_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>num_items</key>
<value>fft_size</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(889, 400)</value>
</param>
<param>
<key>_rotation</key>
<value>180</value>
</param>
</block>
<block>
<key>blocks_vector_to_stream</key>
<param>
<key>id</key>
<value>blocks_vector_to_stream_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>num_items</key>
<value>fft_size</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>
<key>_coordinate</key>
<value>(806, 315)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>blocks_stream_to_vector</key>
<param>
<key>id</key>
<value>blocks_stream_to_vector_0</value>
</param>
<param>
<key>_enabled</key>
<value>True</value>
</param>
<param>
<key>type</key>
<value>complex</value>
</param>
<param>
<key>num_items</key>
<value>fft_size</value>
</param>
<param>
<key>vlen</key>
<value>1</value>
</param>
<param>
<key>affinity</key>
<value></value>
</param>
<param>
<key>minoutbuf</key>
<value>0</value>
</param>
<param>