jakes-process.h

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/*
 * Copyright (c) 2012 Telum (www.telum.ru)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Kirill Andreev <andreev@telum.ru>, Alexander Sofronov <sofronov@telum.ru>
 */
#ifndef DOPPLER_PROCESS_H
#define DOPPLER_PROCESS_H
 
#include "ns3/nstime.h"
#include "ns3/object.h"
#include "ns3/random-variable-stream.h"
 
#include <complex>
 
namespace ns3
{
class PropagationLossModel;
class JakesPropagationLossModel;
 
class JakesProcess : public Object
{
  public:
    static TypeId GetTypeId();
    JakesProcess();
    ~JakesProcess() override;
 
    std::complex<double> GetComplexGain() const;
    double GetChannelGainDb() const;
 
    void SetPropagationLossModel(Ptr<const PropagationLossModel> model);
 
  protected:
    void DoDispose() override;
 
  private:
    struct Oscillator
    {
        Oscillator(std::complex<double> amplitude, double initialPhase, double omega);
        std::complex<double> GetValueAt(Time t) const;
 
        std::complex<double>
            m_amplitude; 
        double m_phase;  
        double m_omega;  
    };
 
  private:
    void SetNOscillators(unsigned int nOscillators);
 
    void SetDopplerFrequencyHz(double dopplerFrequencyHz);
 
    void ConstructOscillators();
 
  private:
    std::vector<Oscillator> m_oscillators;        
    double m_omegaDopplerMax;                     
    unsigned int m_nOscillators;                  
    Ptr<UniformRandomVariable> m_uniformVariable; 
    Ptr<const JakesPropagationLossModel> m_jakes; 
};
} // namespace ns3
#endif // DOPPLER_PROCESS_H