632 lines
22 KiB
C++
632 lines
22 KiB
C++
/*
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* Copyright (c) 2009 MIRKO BANCHI
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* Copyright (c) 2015 University of Washington
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*
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* SPDX-License-Identifier: GPL-2.0-only
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*
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* Authors: Mirko Banchi <mk.banchi@gmail.com>
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* Sebastien Deronne <sebastien.deronne@gmail.com>
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* Tom Henderson <tomhend@u.washington.edu>
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*
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* Adapted from wifi-ht-network.cc example
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*/
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#include "ns3/command-line.h"
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#include "ns3/config.h"
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#include "ns3/internet-stack-helper.h"
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#include "ns3/ipv4-address-helper.h"
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#include "ns3/mobility-helper.h"
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#include "ns3/multi-model-spectrum-channel.h"
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#include "ns3/non-communicating-net-device.h"
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#include "ns3/on-off-helper.h"
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#include "ns3/packet-sink-helper.h"
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#include "ns3/packet-sink.h"
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#include "ns3/propagation-loss-model.h"
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#include "ns3/spectrum-wifi-helper.h"
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#include "ns3/ssid.h"
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#include "ns3/string.h"
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#include "ns3/udp-client-server-helper.h"
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#include "ns3/udp-server.h"
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#include "ns3/waveform-generator-helper.h"
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#include "ns3/waveform-generator.h"
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#include "ns3/wifi-net-device.h"
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#include "ns3/yans-wifi-channel.h"
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#include "ns3/yans-wifi-helper.h"
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#include <iomanip>
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// This is a simple example of an IEEE 802.11n Wi-Fi network with a
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// non-Wi-Fi interferer. It is an adaptation of the wifi-spectrum-per-example
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//
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// Unless the --waveformPower argument is passed, it will operate similarly to
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// wifi-spectrum-per-example. Adding --waveformPower=value for values
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// greater than 0.0001 will result in frame losses beyond those that
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// result from the normal SNR based on distance path loss.
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//
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// If YansWifiPhy is selected as the wifiType, --waveformPower will have
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// no effect.
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//
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// Network topology:
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//
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// Wi-Fi 192.168.1.0
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//
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// STA AP
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// * <-- distance --> *
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// | |
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// n1 n2
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//
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// Users may vary the following command-line arguments in addition to the
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// attributes, global values, and default values typically available:
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//
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// --simulationTime: Simulation time [10s]
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// --udp: UDP if set to 1, TCP otherwise [true]
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// --distance: meters separation between nodes [50]
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// --index: restrict index to single value between 0 and 31 [256]
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// --wifiType: select ns3::SpectrumWifiPhy or ns3::YansWifiPhy [ns3::SpectrumWifiPhy]
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// --errorModelType: select ns3::NistErrorRateModel or ns3::YansErrorRateModel
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// [ns3::NistErrorRateModel]
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// --enablePcap: enable pcap output [false]
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// --waveformPower: Waveform power (linear W) [0]
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//
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// By default, the program will step through 32 index values, corresponding
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// to the following MCS, channel width, and guard interval combinations:
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// index 0-7: MCS 0-7, long guard interval, 20 MHz channel
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// index 8-15: MCS 0-7, short guard interval, 20 MHz channel
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// index 16-23: MCS 0-7, long guard interval, 40 MHz channel
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// index 24-31: MCS 0-7, short guard interval, 40 MHz channel
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// and send UDP for 10 seconds using each MCS, using the SpectrumWifiPhy and the
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// NistErrorRateModel, at a distance of 50 meters. The program outputs
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// results such as:
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//
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// wifiType: ns3::SpectrumWifiPhy distance: 50m; time: 10; TxPower: 16 dBm (40 mW)
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// index MCS Rate (Mb/s) Tput (Mb/s) Received Signal (dBm)Noi+Inf(dBm) SNR (dB)
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// 0 0 6.50 5.77 7414 -64.69 -93.97 29.27
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// 1 1 13.00 11.58 14892 -64.69 -93.97 29.27
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// 2 2 19.50 17.39 22358 -64.69 -93.97 29.27
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// 3 3 26.00 23.23 29875 -64.69 -93.97 29.27
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// ...
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//
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using namespace ns3;
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// Global variables for use in callbacks.
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double g_signalDbmAvg; //!< Average signal power [dBm]
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double g_noiseDbmAvg; //!< Average noise power [dBm]
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uint32_t g_samples; //!< Number of samples
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/**
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* Monitor sniffer Rx trace
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*
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* @param packet The sensed packet.
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* @param channelFreqMhz The channel frequency [MHz].
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* @param txVector The Tx vector.
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* @param aMpdu The aMPDU.
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* @param signalNoise The signal and noise dBm.
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* @param staId The STA ID.
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*/
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void
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MonitorSniffRx(Ptr<const Packet> packet,
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uint16_t channelFreqMhz,
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WifiTxVector txVector,
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MpduInfo aMpdu,
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SignalNoiseDbm signalNoise,
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uint16_t staId)
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{
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g_samples++;
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g_signalDbmAvg += ((signalNoise.signal - g_signalDbmAvg) / g_samples);
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g_noiseDbmAvg += ((signalNoise.noise - g_noiseDbmAvg) / g_samples);
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}
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NS_LOG_COMPONENT_DEFINE("WifiSpectrumPerInterference");
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Ptr<SpectrumModel> SpectrumModelWifi5180MHz; //!< Spectrum model at 5180 MHz.
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Ptr<SpectrumModel> SpectrumModelWifi5190MHz; //!< Spectrum model at 5190 MHz.
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/** Initializer for a static spectrum model centered around 5180 MHz */
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class static_SpectrumModelWifi5180MHz_initializer
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{
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public:
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static_SpectrumModelWifi5180MHz_initializer()
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{
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BandInfo bandInfo;
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bandInfo.fc = 5180e6;
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bandInfo.fl = 5180e6 - 10e6;
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bandInfo.fh = 5180e6 + 10e6;
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Bands bands;
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bands.push_back(bandInfo);
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SpectrumModelWifi5180MHz = Create<SpectrumModel>(bands);
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}
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};
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/// Static instance to initizlize the spectrum model around 5180 MHz.
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static_SpectrumModelWifi5180MHz_initializer static_SpectrumModelWifi5180MHz_initializer_instance;
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/** Initializer for a static spectrum model centered around 5190 MHz */
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class static_SpectrumModelWifi5190MHz_initializer
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{
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public:
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static_SpectrumModelWifi5190MHz_initializer()
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{
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BandInfo bandInfo;
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bandInfo.fc = 5190e6;
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bandInfo.fl = 5190e6 - 10e6;
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bandInfo.fh = 5190e6 + 10e6;
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Bands bands;
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bands.push_back(bandInfo);
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SpectrumModelWifi5190MHz = Create<SpectrumModel>(bands);
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}
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};
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/// Static instance to initizlize the spectrum model around 5190 MHz.
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static_SpectrumModelWifi5190MHz_initializer static_SpectrumModelWifi5190MHz_initializer_instance;
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int
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main(int argc, char* argv[])
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{
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bool udp{true};
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meter_u distance{50};
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Time simulationTime{"10s"};
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uint16_t index{256};
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std::string wifiType{"ns3::SpectrumWifiPhy"};
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std::string errorModelType{"ns3::NistErrorRateModel"};
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bool enablePcap{false};
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const uint32_t tcpPacketSize{1448};
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Watt_u waveformPower{0};
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CommandLine cmd(__FILE__);
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cmd.AddValue("simulationTime", "Simulation time", simulationTime);
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cmd.AddValue("udp", "UDP if set to 1, TCP otherwise", udp);
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cmd.AddValue("distance", "meters separation between nodes", distance);
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cmd.AddValue("index", "restrict index to single value between 0 and 31", index);
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cmd.AddValue("wifiType", "select ns3::SpectrumWifiPhy or ns3::YansWifiPhy", wifiType);
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cmd.AddValue("errorModelType",
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"select ns3::NistErrorRateModel or ns3::YansErrorRateModel",
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errorModelType);
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cmd.AddValue("enablePcap", "enable pcap output", enablePcap);
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cmd.AddValue("waveformPower", "Waveform power (linear W)", waveformPower);
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cmd.Parse(argc, argv);
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uint16_t startIndex = 0;
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uint16_t stopIndex = 31;
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if (index < 32)
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{
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startIndex = index;
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stopIndex = index;
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}
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std::cout << "wifiType: " << wifiType << " distance: " << distance
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<< "m; time: " << simulationTime << "; TxPower: 16 dBm (40 mW)" << std::endl;
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std::cout << std::setw(5) << "index" << std::setw(6) << "MCS" << std::setw(13) << "Rate (Mb/s)"
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<< std::setw(12) << "Tput (Mb/s)" << std::setw(10) << "Received " << std::setw(12)
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<< "Signal (dBm)" << std::setw(12) << "Noi+Inf(dBm)" << std::setw(9) << "SNR (dB)"
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<< std::endl;
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for (uint16_t i = startIndex; i <= stopIndex; i++)
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{
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uint32_t payloadSize;
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if (udp)
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{
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payloadSize = 972; // 1000 bytes IPv4
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}
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else
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{
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payloadSize = 1448; // 1500 bytes IPv6
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Config::SetDefault("ns3::TcpSocket::SegmentSize", UintegerValue(payloadSize));
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}
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NodeContainer wifiStaNode;
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wifiStaNode.Create(1);
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NodeContainer wifiApNode;
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wifiApNode.Create(1);
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NodeContainer interferingNode;
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interferingNode.Create(1);
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YansWifiPhyHelper phy;
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SpectrumWifiPhyHelper spectrumPhy;
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Ptr<MultiModelSpectrumChannel> spectrumChannel;
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uint16_t frequency = (i <= 15 ? 5180 : 5190);
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if (wifiType == "ns3::YansWifiPhy")
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{
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YansWifiChannelHelper channel;
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channel.AddPropagationLoss("ns3::FriisPropagationLossModel",
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"Frequency",
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DoubleValue(frequency * 1e6));
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channel.SetPropagationDelay("ns3::ConstantSpeedPropagationDelayModel");
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phy.SetChannel(channel.Create());
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phy.Set("ChannelSettings",
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StringValue(std::string("{") + (frequency == 5180 ? "36" : "38") +
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", 0, BAND_5GHZ, 0}"));
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}
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else if (wifiType == "ns3::SpectrumWifiPhy")
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{
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spectrumChannel = CreateObject<MultiModelSpectrumChannel>();
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Ptr<FriisPropagationLossModel> lossModel = CreateObject<FriisPropagationLossModel>();
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lossModel->SetFrequency(frequency * 1e6);
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spectrumChannel->AddPropagationLossModel(lossModel);
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Ptr<ConstantSpeedPropagationDelayModel> delayModel =
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CreateObject<ConstantSpeedPropagationDelayModel>();
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spectrumChannel->SetPropagationDelayModel(delayModel);
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spectrumPhy.SetChannel(spectrumChannel);
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spectrumPhy.SetErrorRateModel(errorModelType);
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// channel 36 at 20 MHz, 38 at 40 MHz
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spectrumPhy.Set("ChannelSettings",
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StringValue(std::string("{") + (frequency == 5180 ? "36" : "38") +
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", 0, BAND_5GHZ, 0}"));
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}
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else
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{
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NS_FATAL_ERROR("Unsupported WiFi type " << wifiType);
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}
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WifiHelper wifi;
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wifi.SetStandard(WIFI_STANDARD_80211n);
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WifiMacHelper mac;
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Ssid ssid = Ssid("ns380211n");
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double datarate = 0;
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StringValue DataRate;
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if (i == 0)
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{
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DataRate = StringValue("HtMcs0");
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datarate = 6.5;
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}
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else if (i == 1)
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{
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DataRate = StringValue("HtMcs1");
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datarate = 13;
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}
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else if (i == 2)
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{
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DataRate = StringValue("HtMcs2");
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datarate = 19.5;
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}
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else if (i == 3)
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{
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DataRate = StringValue("HtMcs3");
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datarate = 26;
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}
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else if (i == 4)
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{
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DataRate = StringValue("HtMcs4");
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datarate = 39;
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}
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else if (i == 5)
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{
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DataRate = StringValue("HtMcs5");
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datarate = 52;
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}
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else if (i == 6)
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{
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DataRate = StringValue("HtMcs6");
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datarate = 58.5;
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}
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else if (i == 7)
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{
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DataRate = StringValue("HtMcs7");
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datarate = 65;
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}
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else if (i == 8)
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{
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DataRate = StringValue("HtMcs0");
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datarate = 7.2;
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}
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else if (i == 9)
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{
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DataRate = StringValue("HtMcs1");
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datarate = 14.4;
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}
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else if (i == 10)
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{
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DataRate = StringValue("HtMcs2");
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datarate = 21.7;
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}
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else if (i == 11)
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{
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DataRate = StringValue("HtMcs3");
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datarate = 28.9;
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}
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else if (i == 12)
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{
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DataRate = StringValue("HtMcs4");
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datarate = 43.3;
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}
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else if (i == 13)
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{
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DataRate = StringValue("HtMcs5");
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datarate = 57.8;
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}
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else if (i == 14)
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{
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DataRate = StringValue("HtMcs6");
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datarate = 65;
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}
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else if (i == 15)
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{
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DataRate = StringValue("HtMcs7");
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datarate = 72.2;
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}
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else if (i == 16)
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{
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DataRate = StringValue("HtMcs0");
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datarate = 13.5;
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}
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else if (i == 17)
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{
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DataRate = StringValue("HtMcs1");
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datarate = 27;
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}
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else if (i == 18)
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{
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DataRate = StringValue("HtMcs2");
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datarate = 40.5;
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}
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else if (i == 19)
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{
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DataRate = StringValue("HtMcs3");
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datarate = 54;
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}
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else if (i == 20)
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{
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DataRate = StringValue("HtMcs4");
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datarate = 81;
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}
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else if (i == 21)
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{
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DataRate = StringValue("HtMcs5");
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datarate = 108;
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}
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else if (i == 22)
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{
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DataRate = StringValue("HtMcs6");
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datarate = 121.5;
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}
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else if (i == 23)
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{
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DataRate = StringValue("HtMcs7");
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datarate = 135;
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}
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else if (i == 24)
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{
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DataRate = StringValue("HtMcs0");
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datarate = 15;
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}
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else if (i == 25)
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{
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DataRate = StringValue("HtMcs1");
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datarate = 30;
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}
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else if (i == 26)
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{
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DataRate = StringValue("HtMcs2");
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datarate = 45;
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}
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else if (i == 27)
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{
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DataRate = StringValue("HtMcs3");
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datarate = 60;
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}
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else if (i == 28)
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{
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DataRate = StringValue("HtMcs4");
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datarate = 90;
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}
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else if (i == 29)
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{
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DataRate = StringValue("HtMcs5");
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datarate = 120;
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}
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else if (i == 30)
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{
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DataRate = StringValue("HtMcs6");
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datarate = 135;
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}
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else
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{
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DataRate = StringValue("HtMcs7");
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datarate = 150;
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}
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wifi.SetRemoteStationManager("ns3::ConstantRateWifiManager",
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"DataMode",
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DataRate,
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"ControlMode",
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DataRate);
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NetDeviceContainer staDevice;
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NetDeviceContainer apDevice;
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if (wifiType == "ns3::YansWifiPhy")
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{
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mac.SetType("ns3::StaWifiMac", "Ssid", SsidValue(ssid));
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staDevice = wifi.Install(phy, mac, wifiStaNode);
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mac.SetType("ns3::ApWifiMac", "Ssid", SsidValue(ssid));
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apDevice = wifi.Install(phy, mac, wifiApNode);
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}
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else if (wifiType == "ns3::SpectrumWifiPhy")
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{
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mac.SetType("ns3::StaWifiMac", "Ssid", SsidValue(ssid));
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staDevice = wifi.Install(spectrumPhy, mac, wifiStaNode);
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mac.SetType("ns3::ApWifiMac", "Ssid", SsidValue(ssid));
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apDevice = wifi.Install(spectrumPhy, mac, wifiApNode);
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}
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bool shortGuardIntervalSupported = (i > 7 && i <= 15) || (i > 23);
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Config::Set("/NodeList/*/DeviceList/*/$ns3::WifiNetDevice/HtConfiguration/"
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"ShortGuardIntervalSupported",
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BooleanValue(shortGuardIntervalSupported));
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// mobility.
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MobilityHelper mobility;
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Ptr<ListPositionAllocator> positionAlloc = CreateObject<ListPositionAllocator>();
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positionAlloc->Add(Vector(0.0, 0.0, 0.0));
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positionAlloc->Add(Vector(distance, 0.0, 0.0));
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positionAlloc->Add(Vector(distance, distance, 0.0));
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mobility.SetPositionAllocator(positionAlloc);
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mobility.SetMobilityModel("ns3::ConstantPositionMobilityModel");
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mobility.Install(wifiApNode);
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mobility.Install(wifiStaNode);
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mobility.Install(interferingNode);
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/* Internet stack*/
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InternetStackHelper stack;
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stack.Install(wifiApNode);
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stack.Install(wifiStaNode);
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Ipv4AddressHelper address;
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address.SetBase("192.168.1.0", "255.255.255.0");
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Ipv4InterfaceContainer staNodeInterface;
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Ipv4InterfaceContainer apNodeInterface;
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staNodeInterface = address.Assign(staDevice);
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apNodeInterface = address.Assign(apDevice);
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/* Setting applications */
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ApplicationContainer serverApp;
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if (udp)
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{
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// UDP flow
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uint16_t port = 9;
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UdpServerHelper server(port);
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serverApp = server.Install(wifiStaNode.Get(0));
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serverApp.Start(Seconds(0));
|
|
serverApp.Stop(simulationTime + Seconds(1));
|
|
const auto packetInterval = payloadSize * 8.0 / (datarate * 1e6);
|
|
|
|
UdpClientHelper client(staNodeInterface.GetAddress(0), port);
|
|
client.SetAttribute("MaxPackets", UintegerValue(4294967295U));
|
|
client.SetAttribute("Interval", TimeValue(Seconds(packetInterval)));
|
|
client.SetAttribute("PacketSize", UintegerValue(payloadSize));
|
|
ApplicationContainer clientApp = client.Install(wifiApNode.Get(0));
|
|
clientApp.Start(Seconds(1));
|
|
clientApp.Stop(simulationTime + Seconds(1));
|
|
}
|
|
else
|
|
{
|
|
// TCP flow
|
|
uint16_t port = 50000;
|
|
Address localAddress(InetSocketAddress(Ipv4Address::GetAny(), port));
|
|
PacketSinkHelper packetSinkHelper("ns3::TcpSocketFactory", localAddress);
|
|
serverApp = packetSinkHelper.Install(wifiStaNode.Get(0));
|
|
serverApp.Start(Seconds(0));
|
|
serverApp.Stop(simulationTime + Seconds(1));
|
|
|
|
OnOffHelper onoff("ns3::TcpSocketFactory", Ipv4Address::GetAny());
|
|
onoff.SetAttribute("OnTime", StringValue("ns3::ConstantRandomVariable[Constant=1]"));
|
|
onoff.SetAttribute("OffTime", StringValue("ns3::ConstantRandomVariable[Constant=0]"));
|
|
onoff.SetAttribute("PacketSize", UintegerValue(payloadSize));
|
|
onoff.SetAttribute("DataRate", DataRateValue(datarate * 1e6));
|
|
AddressValue remoteAddress(InetSocketAddress(staNodeInterface.GetAddress(0), port));
|
|
onoff.SetAttribute("Remote", remoteAddress);
|
|
ApplicationContainer clientApp = onoff.Install(wifiApNode.Get(0));
|
|
clientApp.Start(Seconds(1));
|
|
clientApp.Stop(simulationTime + Seconds(1));
|
|
}
|
|
|
|
// Configure waveform generator
|
|
Ptr<SpectrumValue> wgPsd =
|
|
Create<SpectrumValue>(i <= 15 ? SpectrumModelWifi5180MHz : SpectrumModelWifi5190MHz);
|
|
*wgPsd = waveformPower / 20e6; // PSD spread across 20 MHz
|
|
NS_LOG_INFO("wgPsd : " << *wgPsd
|
|
<< " integrated power: " << Integral(*(GetPointer(wgPsd))));
|
|
|
|
if (wifiType == "ns3::SpectrumWifiPhy")
|
|
{
|
|
WaveformGeneratorHelper waveformGeneratorHelper;
|
|
waveformGeneratorHelper.SetChannel(spectrumChannel);
|
|
waveformGeneratorHelper.SetTxPowerSpectralDensity(wgPsd);
|
|
|
|
waveformGeneratorHelper.SetPhyAttribute("Period", TimeValue(Seconds(0.0007)));
|
|
waveformGeneratorHelper.SetPhyAttribute("DutyCycle", DoubleValue(1));
|
|
NetDeviceContainer waveformGeneratorDevices =
|
|
waveformGeneratorHelper.Install(interferingNode);
|
|
|
|
Simulator::Schedule(Seconds(0.002),
|
|
&WaveformGenerator::Start,
|
|
waveformGeneratorDevices.Get(0)
|
|
->GetObject<NonCommunicatingNetDevice>()
|
|
->GetPhy()
|
|
->GetObject<WaveformGenerator>());
|
|
}
|
|
|
|
Config::ConnectWithoutContext("/NodeList/0/DeviceList/*/Phy/MonitorSnifferRx",
|
|
MakeCallback(&MonitorSniffRx));
|
|
|
|
if (enablePcap)
|
|
{
|
|
phy.SetPcapDataLinkType(WifiPhyHelper::DLT_IEEE802_11_RADIO);
|
|
std::stringstream ss;
|
|
ss << "wifi-spectrum-per-example-" << i;
|
|
phy.EnablePcap(ss.str(), apDevice);
|
|
}
|
|
g_signalDbmAvg = 0;
|
|
g_noiseDbmAvg = 0;
|
|
g_samples = 0;
|
|
|
|
// Make sure we are tuned to 5180 MHz; if not, the example will
|
|
// not work properly
|
|
Ptr<NetDevice> staDevicePtr = staDevice.Get(0);
|
|
Ptr<WifiPhy> wifiPhyPtr = staDevicePtr->GetObject<WifiNetDevice>()->GetPhy();
|
|
if (i <= 15)
|
|
{
|
|
NS_ABORT_MSG_IF(wifiPhyPtr->GetChannelWidth() != MHz_u{20},
|
|
"Error: Channel width must be 20 MHz if MCS index <= 15");
|
|
NS_ABORT_MSG_IF(
|
|
wifiPhyPtr->GetFrequency() != MHz_u{5180},
|
|
"Error: Wi-Fi nodes must be tuned to 5180 MHz to match the waveform generator");
|
|
}
|
|
else
|
|
{
|
|
NS_ABORT_MSG_IF(wifiPhyPtr->GetChannelWidth() != MHz_u{40},
|
|
"Error: Channel width must be 40 MHz if MCS index > 15");
|
|
NS_ABORT_MSG_IF(
|
|
wifiPhyPtr->GetFrequency() != MHz_u{5190},
|
|
"Error: Wi-Fi nodes must be tuned to 5190 MHz to match the waveform generator");
|
|
}
|
|
|
|
Simulator::Stop(simulationTime + Seconds(1));
|
|
Simulator::Run();
|
|
|
|
auto throughput = 0.0;
|
|
auto totalPacketsThrough = 0.0;
|
|
if (udp)
|
|
{
|
|
// UDP
|
|
totalPacketsThrough = DynamicCast<UdpServer>(serverApp.Get(0))->GetReceived();
|
|
throughput =
|
|
totalPacketsThrough * payloadSize * 8 / simulationTime.GetMicroSeconds(); // Mbit/s
|
|
}
|
|
else
|
|
{
|
|
// TCP
|
|
auto totalBytesRx = DynamicCast<PacketSink>(serverApp.Get(0))->GetTotalRx();
|
|
totalPacketsThrough = totalBytesRx / tcpPacketSize;
|
|
throughput = totalBytesRx * 8 / simulationTime.GetMicroSeconds(); // Mbit/s
|
|
}
|
|
std::cout << std::setw(5) << i << std::setw(6) << (i % 8) << std::setprecision(2)
|
|
<< std::fixed << std::setw(10) << datarate << std::setw(12) << throughput
|
|
<< std::setw(8) << totalPacketsThrough;
|
|
if (totalPacketsThrough > 0)
|
|
{
|
|
std::cout << std::setw(12) << g_signalDbmAvg << std::setw(12) << g_noiseDbmAvg
|
|
<< std::setw(12) << (g_signalDbmAvg - g_noiseDbmAvg) << std::endl;
|
|
}
|
|
else
|
|
{
|
|
std::cout << std::setw(12) << "N/A" << std::setw(12) << "N/A" << std::setw(12) << "N/A"
|
|
<< std::endl;
|
|
}
|
|
Simulator::Destroy();
|
|
}
|
|
return 0;
|
|
}
|