22 #include <ns3/object-factory.h>
24 #include <ns3/double.h>
25 #include <ns3/simulator.h>
26 #include <ns3/trace-source-accessor.h>
27 #include <ns3/antenna-model.h>
29 #include "spectrum-analyzer.h"
35 NS_OBJECT_ENSURE_REGISTERED (SpectrumAnalyzer);
37 SpectrumAnalyzer::SpectrumAnalyzer ()
42 m_sumPowerSpectralDensity (0),
51 SpectrumAnalyzer::~SpectrumAnalyzer ()
64 m_sumPowerSpectralDensity = 0;
65 m_energySpectralDensity = 0;
70 SpectrumAnalyzer::GetTypeId (
void)
74 .AddConstructor<SpectrumAnalyzer> ()
75 .AddAttribute (
"Resolution",
76 "the lengh of the time interval over which the power spectral "
77 "density of incoming signals is averaged",
79 MakeTimeAccessor (&SpectrumAnalyzer::m_resolution),
81 .AddAttribute (
"NoisePowerSpectralDensity",
82 "the power spectral density of the measuring instrument noise, in Watt/Hz. Mostly useful to make spectrograms look more similar to those obtained by real devices. Defaults to the value for thermal noise at 300K.",
84 MakeDoubleAccessor (&SpectrumAnalyzer::m_noisePowerSpectralDensity),
85 MakeDoubleChecker<double> ())
86 .AddTraceSource (
"AveragePowerSpectralDensityReport",
87 "Trace fired whenever a new value for the average Power Spectral Density is calculated",
112 return m_spectrumModel;
158 AddSignal (params->psd);
159 Simulator::Schedule (params->duration, &SpectrumAnalyzer::SubtractSignal,
this, params->psd);
167 UpdateEnergyReceivedSoFar ();
168 (*m_sumPowerSpectralDensity) += (*psd);
172 SpectrumAnalyzer::SubtractSignal (Ptr<const SpectrumValue> psd)
175 UpdateEnergyReceivedSoFar ();
176 (*m_sumPowerSpectralDensity) -= (*psd);
180 SpectrumAnalyzer::UpdateEnergyReceivedSoFar ()
183 if (m_lastChangeTime <
Now ())
185 (*m_energySpectralDensity) += (*m_sumPowerSpectralDensity) * ((
Now () - m_lastChangeTime).GetSeconds ());
186 m_lastChangeTime =
Now ();
195 SpectrumAnalyzer::GenerateReport ()
199 UpdateEnergyReceivedSoFar ();
200 Ptr<SpectrumValue> avgPowerSpectralDensity = Create<SpectrumValue> (m_sumPowerSpectralDensity->GetSpectrumModel ());
201 (*avgPowerSpectralDensity) = (*m_energySpectralDensity) / m_resolution.
GetSeconds ();
202 (*avgPowerSpectralDensity) += m_noisePowerSpectralDensity;
203 (*m_energySpectralDensity) = 0;
206 m_averagePowerSpectralDensityReportTrace (avgPowerSpectralDensity);
208 *avgPowerSpectralDensity = 0;
224 m_sumPowerSpectralDensity = Create<SpectrumValue> (f);
225 m_energySpectralDensity = Create<SpectrumValue> (f);
#define NS_LOG_FUNCTION(parameters)
void StartRx(Ptr< SpectrumSignalParameters > params)
Ptr< NetDevice > GetDevice()
#define NS_ASSERT(condition)
#define NS_LOG_COMPONENT_DEFINE(name)
virtual void DoDispose(void)
static EventId Schedule(Time const &time, MEM mem_ptr, OBJ obj)
void SetChannel(Ptr< SpectrumChannel > c)
double GetSeconds(void) const
hold objects of type ns3::Time
void SetRxSpectrumModel(Ptr< SpectrumModel > m)
#define NS_LOG_LOGIC(msg)
void SetDevice(Ptr< NetDevice > d)
Ptr< const TraceSourceAccessor > MakeTraceSourceAccessor(T a)
Time Now(void)
create an ns3::Time instance which contains the current simulation time.
Ptr< MobilityModel > GetMobility()
void SetMobility(Ptr< MobilityModel > m)
Time MilliSeconds(uint64_t ms)
create ns3::Time instances in units of milliseconds.
Ptr< const SpectrumModel > GetRxSpectrumModel() const
Ptr< AntennaModel > GetRxAntenna()
Hold an floating point type.
a unique identifier for an interface.
TypeId SetParent(TypeId tid)
void SetAntenna(Ptr< AntennaModel > a)