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Diffstat (limited to 'gr-channels/grc/channels_selective_fading_model2.xml')
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1 files changed, 0 insertions, 128 deletions
diff --git a/gr-channels/grc/channels_selective_fading_model2.xml b/gr-channels/grc/channels_selective_fading_model2.xml deleted file mode 100644 index 1e1ea3a70c..0000000000 --- a/gr-channels/grc/channels_selective_fading_model2.xml +++ /dev/null @@ -1,128 +0,0 @@ -<?xml version="1.0"?> -<!-- -################################################### -##Frequency Selective Fading Model -################################################### - --> -<block> - <name>Frequency Selective Fading Model2</name> - <key>channels_selective_fading_model2</key> - <import>from gnuradio import channels</import> - <make>channels.selective_fading_model2( $N, $fDTs, $LOS, $K, $seed, $delays, $delay_std, $delay_maxdev, $mags, $ntaps )</make> - <callback>set_fDTs($fDTs)</callback> - <callback>set_K($K)</callback> - <param> - <name>Num Sinusoids (Stochastic SoS model + delay drift)</name> - <key>N</key> - <value>8</value> - <type>int</type> - </param> - <param> - <name>Normalized Max Doppler (fD*Ts)</name> - <key>fDTs</key> - <value>0.2/samp_rate</value> - <type>real</type> - </param> - <param> - <name>LOS Model</name> - <key>LOS</key> - <type>enum</type> - <option> - <name>Rayleigh/NLOS</name> - <key>False</key> - <opt>hide_K:all</opt> - </option> - <option> - <name>Rician/LOS</name> - <key>True</key> - <opt>hide_K:</opt> - </option> - </param> - <param> - <name>Rician factor (K)</name> - <key>K</key> - <value>4.0</value> - <type>real</type> - <hide>$LOS.hide_K</hide> - </param> - <param> - <name>Seed</name> - <key>seed</key> - <value>0</value> - <type>int</type> - </param> - <param> - <name>PDP Delays (in samps)</name> - <key>delays</key> - <value>1.0,1.9,2.7</value> - <type>real_vector</type> - </param> - <param> - <name>PDP Delay StdDev (per samp)</name> - <key>delay_std</key> - <value>1e-4,1e-4,1e-4</value> - <type>real_vector</type> - </param> - <param> - <name>PDP Delay Max-Dev (per samp)</name> - <key>delay_maxdev</key> - <value>0.5,0.7,0.9</value> - <type>real_vector</type> - </param> - <param> - <name>PDP Magnitudes</name> - <key>mags</key> - <value>1,0.95,0.8</value> - <type>real_vector</type> - </param> - <param> - <name>Num Taps</name> - <key>ntaps</key> - <value>8</value> - <type>int</type> - </param> - <sink> - <name>in</name> - <type>complex</type> - </sink> - <source> - <name>out</name> - <type>complex</type> - </source> - <source> - <name>taps</name> - <type>message</type> - <optional>1</optional> - </source> - <doc> - int d_N=8; // number of sinusoids used to simulate gain on each ray - float d_fDTs=0.01 // normalized maximum doppler frequency (f_doppler / f_samprate) - float d_K=4; // Rician factor (ratio of the specular power to the scattered power) - bool d_LOS=true; // LOS path exists? chooses Rician (LOS) vs Rayleigh (NLOS) model. - int seed=0; // noise seed - int ntaps; // Number of FIR taps to use in selective fading model - - These two vectors comprise the Power Delay Profile of the signal - float_vector delays // Time delay in the fir filter (in samples) for each arriving WSSUS Ray - float_vector mags // Magnitude corresponding to each WSSUS Ray - - If using a LOS model, the first delay and mag should correspond with the LOS component - - References: - - The flat-fading portion of the algorithm implements the following - Compact Rayleigh and Rician fading simulator based on random walk processes - A. Alimohammad S.F. Fard B.F. Cockburn C. Schlegel - 26th November 2008 - (Alogrithm III) - ( with a novel addition of time delay tap random walk ) - - The frequency selective extension of the block roughly implements - A Low-Complexity Hardware Implementation of Discrete-Time - Frequency-Selective Rayleigh Fading Channels - F. Ren and Y. Zheng - 24-27 May 2009 - - Implementation by Tim O'Shea - </doc> -</block> |