noisegenerator.h

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/***************************************************************************
                          noisegenerator.h  -  description
                             -------------------
    begin                : Thu Jun 26 2003
    copyright            : (C) 2003 by Peter Haase
    email                : p.haase@tuhh.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Lesser General Public            *
 *   License as published by the Free Software Foundation; either          *
 *   version 2.1 of the License, or (at your option) any later version.    *
 *                                                                         *
 *   This library 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     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the Free Software   *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef NOISEGENERATOR_H
#define NOISEGENERATOR_H

#include "basicdevice.h"

//Forward declaration:
namespace simth
{
class GaussRng;
}


namespace simthlib
{

class NoiseGenerator : public simth::Device
{

  public:

    NoiseGenerator(int deviceID, simth::DeviceSystemIntf* system,
                   const simth::PropertyList& pl = simth::PropertyList());

    virtual ~NoiseGenerator();

    virtual void updateInputLengths();
    virtual void updateOutputLengths();

    virtual void setSNR(double snr) = 0;

    virtual void print(std::ostream &os) const ;

    static void init(const std::string fileName, simth::Device** dev,
                     simth::DeviceSystemIntf* sysPtr, int ID,
                     const std::string& regionQualifier = "");

};


template<class T>
class BasebandAwgnGenerator : public NoiseGenerator
{
  public:

    BasebandAwgnGenerator(int deviceID, simth::DeviceSystemIntf* system,
                          const simth::PropertyList& pl = simth::PropertyList());

    ~BasebandAwgnGenerator();

    virtual void process();

    virtual void setSNR(double snr);

    virtual void print(std::ostream &os) const ;

    static void init(const std::string fileName, simth::Device** dev,
                     simth::DeviceSystemIntf* sysPtr, int ID,
                     const std::string& regionQualifier = "");

  private:

    double getGauss() const;

    simth::GaussRng* gauss;

};

}

#endif

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