1 /* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
2 /*
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License version 2 as
5 * published by the Free Software Foundation;
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
15 *
16 * Author: Sébastien Deronne <sebastien.deronne@gmail.com>
17 */
18
19 // This example is used to validate error rate models for DSSS rates.
20 //
21 // It outputs plots of the Frame Success Rate versus the Signal-to-noise ratio
22 // for the DSSS error rate models and for every DSSS mode.
23
24 #include <fstream>
25 #include <cmath>
26 #include "ns3/gnuplot.h"
27 #include "ns3/command-line.h"
28 #include "ns3/yans-error-rate-model.h"
29 #include "ns3/nist-error-rate-model.h"
30 #include "ns3/table-based-error-rate-model.h"
31 #include "ns3/wifi-tx-vector.h"
32
33 using namespace ns3;
34
main(int argc,char * argv[])35 int main (int argc, char *argv[])
36 {
37 uint32_t FrameSize = 1500; //bytes
38 std::ofstream file ("frame-success-rate-dsss.plt");
39 std::vector <std::string> modes;
40
41 modes.push_back ("DsssRate1Mbps");
42 modes.push_back ("DsssRate2Mbps");
43 modes.push_back ("DsssRate5_5Mbps");
44 modes.push_back ("DsssRate11Mbps");
45
46 CommandLine cmd (__FILE__);
47 cmd.AddValue ("FrameSize", "The frame size in bytes", FrameSize);
48 cmd.Parse (argc, argv);
49
50 Gnuplot plot = Gnuplot ("frame-success-rate-dsss.eps");
51
52 Ptr <YansErrorRateModel> yans = CreateObject<YansErrorRateModel> ();
53 Ptr <NistErrorRateModel> nist = CreateObject<NistErrorRateModel> ();
54 Ptr <TableBasedErrorRateModel> table = CreateObject<TableBasedErrorRateModel> ();
55 WifiTxVector txVector;
56
57 for (uint32_t i = 0; i < modes.size (); i++)
58 {
59 std::cout << modes[i] << std::endl;
60 Gnuplot2dDataset dataset (modes[i]);
61 txVector.SetMode (modes[i]);
62
63 for (double snr = -10.0; snr <= 20.0; snr += 0.1)
64 {
65 double psYans = yans->GetChunkSuccessRate (WifiMode (modes[i]), txVector, std::pow (10.0, snr / 10.0), FrameSize * 8);
66 if (psYans < 0.0 || psYans > 1.0)
67 {
68 //error
69 exit (1);
70 }
71 double psNist = nist->GetChunkSuccessRate (WifiMode (modes[i]), txVector, std::pow (10.0, snr / 10.0), FrameSize * 8);
72 if (psNist < 0.0 || psNist > 1.0)
73 {
74 std::cout<<psNist<<std::endl;
75 //error
76 exit (1);
77 }
78 if (psNist != psYans)
79 {
80 exit (1);
81 }
82 double psTable = table->GetChunkSuccessRate (WifiMode (modes[i]), txVector, std::pow (10.0, snr / 10.0), FrameSize * 8);
83 if (psTable < 0.0 || psTable > 1.0)
84 {
85 std::cout << psTable << std::endl;
86 //error
87 exit (1);
88 }
89 if (psTable != psYans)
90 {
91 exit (1);
92 }
93 dataset.Add (snr, psYans);
94 }
95
96 plot.AddDataset (dataset);
97 }
98
99 plot.SetTerminal ("postscript eps color enh \"Times-BoldItalic\"");
100 plot.SetLegend ("SNR(dB)", "Frame Success Rate");
101 plot.SetExtra ("set xrange [-10:20]\n\
102 set yrange [0:1.2]\n\
103 set style line 1 linewidth 5\n\
104 set style line 2 linewidth 5\n\
105 set style line 3 linewidth 5\n\
106 set style line 4 linewidth 5\n\
107 set style line 5 linewidth 5\n\
108 set style line 6 linewidth 5\n\
109 set style line 7 linewidth 5\n\
110 set style line 8 linewidth 5\n\
111 set style increment user" );
112 plot.GenerateOutput (file);
113 file.close ();
114 }
115