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/** |
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/** |
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* This example (inspired from tv-trans-example) enables to generate the transmitted spectra of |
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* This example (inspired from tv-trans-example) enables to generate the transmitted spectra of |
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* Wi-Fi stations, so as to model transmit mask imperfections of OFDM-based Wi-Fi standards. |
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* Wi-Fi stations, so as to model transmit mask imperfections of OFDM-based Wi-Fi standards. |
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* Only the first moments of an association procedure of a station to an access point have been |
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* Only one data packet is sent from access point to station (once association has been performed) |
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* considered to reduce execution time. |
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* so as to reduce execution time. |
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* |
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* |
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* A spectrum analyzer is used to measure the transmitted spectra from Wi-Fi stations. |
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* A spectrum analyzer is used to measure the transmitted spectra from Wi-Fi stations. |
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* The file "spectrum-analyzer-wifi-[standard]-[bandwidth]MHz-sim-2-0.tr" contains its |
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* The file "spectrum-analyzer-wifi-[standard]-[bandwidth]MHz-sim-2-0.tr" contains its |
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* The wifi-trans-example.sh script runs this example for all combinations, plots transmitted spectra, |
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* The wifi-trans-example.sh script runs this example for all combinations, plots transmitted spectra, |
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* and puts resulting png images in wifi-trans-results folder. |
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* and puts resulting png images in wifi-trans-results folder. |
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*/ |
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*/ |
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| 45 |
void |
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SendPacket (Ptr<NetDevice> sourceDevice, Address& destination) |
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{ |
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Ptr<Packet> pkt = Create<Packet> (100); // dummy bytes of data |
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sourceDevice->Send (pkt, destination, 0); |
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} |
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|
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int main (int argc, char** argv) |
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int main (int argc, char** argv) |
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{ |
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{ |
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std::string standard = "11a"; |
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std::string standard = "11a"; |
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Lines 60-65
int main (int argc, char** argv)
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Link Here
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| 60 |
Ssid ssid; |
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Ssid ssid; |
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std::string dataRate; |
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std::string dataRate; |
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int freq; |
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int freq; |
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Time dataStartTime = MicroSeconds (800); // leaving enough time for beacon and association procedure |
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Time dataDuration = MicroSeconds (300); // leaving enough time for data transfer (+ acknowledgment) |
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if (standard == "11a") |
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if (standard == "11a") |
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{ |
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{ |
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wifi.SetStandard (WIFI_PHY_STANDARD_80211a); |
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wifi.SetStandard (WIFI_PHY_STANDARD_80211a); |
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Lines 76-83
int main (int argc, char** argv)
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Link Here
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| 76 |
{ |
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{ |
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wifi.SetStandard (WIFI_PHY_STANDARD_80211_10MHZ); |
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wifi.SetStandard (WIFI_PHY_STANDARD_80211_10MHZ); |
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ssid = Ssid ("ns380211_10MHZ"); |
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ssid = Ssid ("ns380211_10MHZ"); |
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dataRate = "OfdmRate6Mbps"; |
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dataRate = "OfdmRate3MbpsBW10MHz"; |
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freq = 5860; |
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freq = 5860; |
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dataStartTime = MicroSeconds (1400); |
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dataDuration = MicroSeconds (600); |
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if (bw != 10) |
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if (bw != 10) |
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{ |
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{ |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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Lines 88-95
int main (int argc, char** argv)
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Link Here
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| 88 |
{ |
100 |
{ |
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wifi.SetStandard (WIFI_PHY_STANDARD_80211_5MHZ); |
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wifi.SetStandard (WIFI_PHY_STANDARD_80211_5MHZ); |
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ssid = Ssid ("ns380211_5MHZ"); |
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ssid = Ssid ("ns380211_5MHZ"); |
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dataRate = "OfdmRate6Mbps"; |
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dataRate = "OfdmRate1_5MbpsBW5MHz"; |
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freq = 5860; |
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freq = 5860; |
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dataStartTime = MicroSeconds (2500); |
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dataDuration = MicroSeconds (1200); |
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if (bw != 5) |
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if (bw != 5) |
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{ |
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{ |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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Lines 102-107
int main (int argc, char** argv)
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Link Here
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ssid = Ssid ("ns380211n_2_4GHZ"); |
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ssid = Ssid ("ns380211n_2_4GHZ"); |
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dataRate = "HtMcs0"; |
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dataRate = "HtMcs0"; |
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freq = 2402 + (bw / 2); //so as to have 2412/2422 for 20/40 |
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freq = 2402 + (bw / 2); //so as to have 2412/2422 for 20/40 |
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dataStartTime = MicroSeconds (4700); |
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dataDuration = MicroSeconds (400); |
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if (bw != 20 && bw != 40) |
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if (bw != 20 && bw != 40) |
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{ |
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{ |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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Lines 114-119
int main (int argc, char** argv)
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Link Here
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ssid = Ssid ("ns380211n_5GHZ"); |
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ssid = Ssid ("ns380211n_5GHZ"); |
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dataRate = "HtMcs0"; |
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dataRate = "HtMcs0"; |
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freq = 5170 + (bw / 2); //so as to have 5180/5190 for 20/40 |
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freq = 5170 + (bw / 2); //so as to have 5180/5190 for 20/40 |
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dataStartTime = MicroSeconds (1000); |
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if (bw != 20 && bw != 40) |
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if (bw != 20 && bw != 40) |
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{ |
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{ |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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Lines 126-131
int main (int argc, char** argv)
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Link Here
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| 126 |
ssid = Ssid ("ns380211ac"); |
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ssid = Ssid ("ns380211ac"); |
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dataRate = "VhtMcs0"; |
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dataRate = "VhtMcs0"; |
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freq = 5170 + (bw / 2); //so as to have 5180/5190/5210/5250 for 20/40/80/160 |
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freq = 5170 + (bw / 2); //so as to have 5180/5190/5210/5250 for 20/40/80/160 |
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dataStartTime = MicroSeconds (1100); |
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dataDuration += MicroSeconds (400); //account for ADDBA procedure |
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if (bw != 20 && bw != 40 && bw != 80 && bw != 160) |
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if (bw != 20 && bw != 40 && bw != 80 && bw != 160) |
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{ |
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{ |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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Lines 138-143
int main (int argc, char** argv)
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Link Here
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| 138 |
ssid = Ssid ("ns380211ax_2_4GHZ"); |
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ssid = Ssid ("ns380211ax_2_4GHZ"); |
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dataRate = "HeMcs0"; |
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dataRate = "HeMcs0"; |
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freq = 2402 + (bw / 2); //so as to have 2412/2422/2442 for 20/40/80 |
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freq = 2402 + (bw / 2); //so as to have 2412/2422/2442 for 20/40/80 |
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dataStartTime = MicroSeconds (5500); |
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dataDuration += MicroSeconds (2000); //account for ADDBA procedure |
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if (bw != 20 && bw != 40 && bw != 80) |
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if (bw != 20 && bw != 40 && bw != 80) |
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{ |
163 |
{ |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
164 |
std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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Lines 150-155
int main (int argc, char** argv)
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Link Here
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| 150 |
ssid = Ssid ("ns380211ax_5GHZ"); |
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ssid = Ssid ("ns380211ax_5GHZ"); |
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dataRate = "HeMcs0"; |
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dataRate = "HeMcs0"; |
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freq = 5170 + (bw / 2); //so as to have 5180/5190/5210/5250 for 20/40/80/160 |
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freq = 5170 + (bw / 2); //so as to have 5180/5190/5210/5250 for 20/40/80/160 |
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dataStartTime = MicroSeconds (1200); |
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dataDuration += MicroSeconds (500); //account for ADDBA procedure |
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if (bw != 20 && bw != 40 && bw != 80 && bw != 160) |
176 |
if (bw != 20 && bw != 40 && bw != 80 && bw != 160) |
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{ |
177 |
{ |
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std::cout << "Bandwidth is not compatible with standard" << std::endl; |
178 |
std::cout << "Bandwidth is not compatible with standard" << std::endl; |
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Lines 164-173
int main (int argc, char** argv)
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Link Here
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if (verbose) |
188 |
if (verbose) |
| 166 |
{ |
189 |
{ |
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190 |
LogComponentEnableAll (LOG_PREFIX_ALL); |
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LogComponentEnable ("WifiSpectrumValueHelper", LOG_LEVEL_ALL); |
191 |
LogComponentEnable ("WifiSpectrumValueHelper", LOG_LEVEL_ALL); |
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LogComponentEnable ("WifiSpectrumValueHelper", LOG_PREFIX_ALL); |
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LogComponentEnable ("SpectrumWifiPhy", LOG_LEVEL_ALL); |
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LogComponentEnable ("SpectrumWifiPhy", LOG_LEVEL_ALL); |
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LogComponentEnable ("SpectrumWifiPhy", LOG_PREFIX_ALL); |
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} |
193 |
} |
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194 |
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/* nodes and positions */ |
195 |
/* nodes and positions */ |
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Lines 214-220
int main (int argc, char** argv)
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Link Here
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| 214 |
"EnableBeaconJitter", BooleanValue (false)); // so as to be sure that first beacon arrives quickly |
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"EnableBeaconJitter", BooleanValue (false)); // so as to be sure that first beacon arrives quickly |
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NetDeviceContainer apDevice = wifi.Install (spectrumPhy, mac, wifiApNode); |
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NetDeviceContainer apDevice = wifi.Install (spectrumPhy, mac, wifiApNode); |
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238 |
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MobilityHelper mobility; |
239 |
MobilityHelper mobility; |
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Ptr<ListPositionAllocator> nodePositionList = CreateObject<ListPositionAllocator> (); |
240 |
Ptr<ListPositionAllocator> nodePositionList = CreateObject<ListPositionAllocator> (); |
| 220 |
nodePositionList->Add (Vector (0.0, 1.0, 0.0)); // AP |
241 |
nodePositionList->Add (Vector (0.0, 1.0, 0.0)); // AP |
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Lines 224-230
int main (int argc, char** argv)
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Link Here
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| 224 |
mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel"); |
245 |
mobility.SetMobilityModel ("ns3::ConstantPositionMobilityModel"); |
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mobility.Install (allNodes); |
246 |
mobility.Install (allNodes); |
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247 |
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/* No need to have Internet stack nor applications because beacon/association frames shall illustrate principle */ |
248 |
/* Need to send data packet because beacon and association frames shall be sent using lowest rate */ |
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249 |
// Send one data packet (this packet is sent using data rate / MCS defined above) once association is done (otherwise dropped) |
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Simulator::Schedule (dataStartTime, &SendPacket, apDevice.Get (0), staDevice.Get (0)->GetAddress ()); |
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251 |
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/* frequency range for spectrum analyzer */ |
252 |
/* frequency range for spectrum analyzer */ |
| 230 |
std::vector<double> freqs; |
253 |
std::vector<double> freqs; |
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Lines 246-260
int main (int argc, char** argv)
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Link Here
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| 246 |
spectrumAnalyzerHelper.EnableAsciiAll (ossFileName.str ()); |
269 |
spectrumAnalyzerHelper.EnableAsciiAll (ossFileName.str ()); |
| 247 |
NetDeviceContainer spectrumAnalyzerDevices = spectrumAnalyzerHelper.Install (spectrumAnalyzerNodes); |
270 |
NetDeviceContainer spectrumAnalyzerDevices = spectrumAnalyzerHelper.Install (spectrumAnalyzerNodes); |
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271 |
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| 249 |
/* Let enough time for beacon (even in 2.4 GHz, i.e. DSSS) and association procedure */ |
272 |
/* Let enough time for first beacon, association procedure, and first data (+acknowledgment and eventually preceding ADDBA procedure) */ |
| 250 |
if (freq > 5000) |
273 |
Simulator::Stop (dataStartTime + dataDuration); |
| 251 |
{ |
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| 252 |
Simulator::Stop (MicroSeconds (1500)); |
| 253 |
} |
| 254 |
else |
| 255 |
{ |
| 256 |
Simulator::Stop (MicroSeconds (2500)); //beacon in DSSS takes more time |
| 257 |
} |
| 258 |
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274 |
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| 259 |
Simulator::Run (); |
275 |
Simulator::Run (); |
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276 |
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