examples: Add example to compare wifi error rate models
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Sébastien Deronne
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Sebastien Deronne
Sebastien Deronne
parent
be8a4fe60a
commit
41ceefb0e4
@@ -36,6 +36,7 @@ cpp_examples = [
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("wifi-ofdm-ht-validation", "True", "True"),
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("wifi-ofdm-vht-validation", "True", "True"),
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("wifi-ofdm-he-validation", "True", "True"),
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("wifi-error-models-comparison", "True", "True"),
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("wifi-80211n-mimo --simulationTime=0.1 --step=10", "True", "True"),
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("wifi-ht-network --simulationTime=0.2 --frequency=5 --useRts=0 --minExpectedThroughput=5 --maxExpectedThroughput=135", "True", "True"),
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("wifi-ht-network --simulationTime=0.2 --frequency=5 --useRts=1 --minExpectedThroughput=5 --maxExpectedThroughput=131", "True", "True"),
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168
examples/wireless/wifi-error-models-comparison.cc
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168
examples/wireless/wifi-error-models-comparison.cc
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@@ -0,0 +1,168 @@
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/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
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/*
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* Copyright (c) 2020 University of Washington
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation;
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Authors: Sébastien Deronne <sebastien.deronne@gmail.com>
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* Rohan Patidar <rpatidar@uw.edu>
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*/
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// This example is to show difference among Nist, Yans and Table-based error rate models.
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//
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// It outputs plots of the Frame Error Rate versus the Signal-to-noise ratio for
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// Nist, Yans and Table-based error rate models and for MCS 0, 4 and 7 value.
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#include <fstream>
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#include <cmath>
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#include "ns3/gnuplot.h"
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#include "ns3/command-line.h"
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#include "ns3/yans-error-rate-model.h"
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#include "ns3/nist-error-rate-model.h"
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#include "ns3/table-based-error-rate-model.h"
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#include "ns3/wifi-tx-vector.h"
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using namespace ns3;
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int main (int argc, char *argv[])
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{
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uint32_t size = 1500 * 8; //bits
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bool tableErrorModelEnabled = true;
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bool yansErrorModelEnabled = true;
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bool nistErrorModelEnabled = true;
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uint8_t beginMcs = 0;
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uint8_t endMcs = 7;
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uint8_t stepMcs = 4;
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std::string format ("Ht");
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CommandLine cmd (__FILE__);
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cmd.AddValue ("size", "The size in bits", size);
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cmd.AddValue ("frameFormat", "The frame format to use: Ht, Vht or He", format);
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cmd.AddValue ("beginMcs", "The first MCS to test", beginMcs);
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cmd.AddValue ("endMcs", "The last MCS to test", endMcs);
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cmd.AddValue ("stepMcs", "The step between two MCSs to test", stepMcs);
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cmd.AddValue ("includeTableErrorModel", "Flag to include/exclude Table-based error model", tableErrorModelEnabled);
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cmd.AddValue ("includeYansErrorModel", "Flag to include/exclude Yans error model", yansErrorModelEnabled);
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cmd.AddValue ("includeNistErrorModel", "Flag to include/exclude Nist error model", nistErrorModelEnabled);
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cmd.Parse (argc, argv);
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std::ofstream errormodelfile ("wifi-error-rate-models.plt");
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Gnuplot plot = Gnuplot ("wifi-error-rate-models.eps");
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Ptr <YansErrorRateModel> yans = CreateObject<YansErrorRateModel> ();
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Ptr <NistErrorRateModel> nist = CreateObject<NistErrorRateModel> ();
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Ptr <TableBasedErrorRateModel> table = CreateObject<TableBasedErrorRateModel> ();
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WifiTxVector txVector;
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std::vector <std::string> modes;
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std::stringstream mode;
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mode << format << "Mcs" << +beginMcs;
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modes.push_back (mode.str ());
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for (uint8_t mcs = (beginMcs + stepMcs); mcs < endMcs; mcs += stepMcs)
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{
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mode.str ("");
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mode << format << "Mcs" << +mcs;
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modes.push_back (mode.str ());
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}
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mode.str ("");
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mode << format << "Mcs" << +endMcs;
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modes.push_back (mode.str ());
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for (uint32_t i = 0; i < modes.size (); i++)
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{
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std::cout << modes[i] << std::endl;
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Gnuplot2dDataset yansdataset (modes[i]);
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Gnuplot2dDataset nistdataset (modes[i]);
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Gnuplot2dDataset tabledataset (modes[i]);
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txVector.SetMode (modes[i]);
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for (double snr = -5.0; snr <= (endMcs * 5); snr += 0.1)
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{
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double ps = yans->GetChunkSuccessRate (WifiMode (modes[i]), txVector, std::pow (10.0, snr / 10.0), size);
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if (ps < 0 || ps > 1)
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{
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//error
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exit (1);
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}
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yansdataset.Add (snr, 1 - ps);
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ps = nist->GetChunkSuccessRate (WifiMode (modes[i]), txVector, std::pow (10.0, snr / 10.0), size);
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if (ps < 0 || ps > 1)
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{
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//error
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exit (1);
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}
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nistdataset.Add (snr, 1 - ps);
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ps = table->GetChunkSuccessRate (WifiMode (modes[i]), txVector, std::pow (10.0, snr / 10.0), size);
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if (ps < 0 || ps > 1)
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{
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//error
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exit (1);
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}
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tabledataset.Add (snr, 1 - ps);
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}
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if (tableErrorModelEnabled)
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{
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std::stringstream ss;
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ss << "Table-" << modes[i];
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tabledataset.SetTitle (ss.str());
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plot.AddDataset (tabledataset);
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}
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if (yansErrorModelEnabled)
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{
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std::stringstream ss;
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ss << "Yans-" << modes[i];
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yansdataset.SetTitle (ss.str ());
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plot.AddDataset (yansdataset);
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}
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if (nistErrorModelEnabled)
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{
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std::stringstream ss;
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ss << "Nist-" << modes[i];
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nistdataset.SetTitle (ss.str ());
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plot.AddDataset (nistdataset);
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}
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}
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plot.SetTerminal ("postscript eps color enh \"Times-BoldItalic\"");
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plot.SetLegend ("SNR(dB)", "Frame Error Rate");
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std::stringstream plotExtra;
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plotExtra << "set xrange [-5:" << endMcs * 5 << "]\n\
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set log y\n\
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set yrange [0.0001:1]\n";
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uint8_t lineNumber = 1;
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for (uint32_t i = 0; i < modes.size (); i++)
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{
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if (tableErrorModelEnabled)
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{
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plotExtra << "set style line " << +lineNumber++ << " linewidth 5 linecolor rgb \"red\" \n";
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}
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if (yansErrorModelEnabled)
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{
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plotExtra << "set style line " << +lineNumber++ << " linewidth 5 linecolor rgb \"green\" \n";
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}
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if (nistErrorModelEnabled)
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{
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plotExtra << "set style line " << +lineNumber++ << " linewidth 5 linecolor rgb \"blue\" \n";
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}
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}
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plotExtra << "set style increment user";
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plot.SetExtra (plotExtra.str ());
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plot.GenerateOutput (errormodelfile);
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errormodelfile.close ();
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}
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@@ -121,3 +121,6 @@ def build(bld):
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obj = bld.create_ns3_program('wifi-spatial-reuse', ['wifi', 'applications'])
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obj.source = 'wifi-spatial-reuse.cc'
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obj = bld.create_ns3_program('wifi-error-models-comparison', ['wifi'])
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obj.source = 'wifi-error-models-comparison.cc'
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