mimo-encoder.h

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/*-*-c++-*-*****************************************************************
                          encoder.h  -  description
                             -------------------
    begin                : Don Mai 16 2002
    copyright            : (C) 2002 by Peter Haase
    email                : mail@p-haase.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 MIMO_ENCODER_H
#define MIMO_ENCODER_H

#include <iostream>
#include <complex>

// Simthetic includes
#include <simthetic/basicdevice.h>
#include <simthetic/signals.h>
#include <simthetic/misc.h>

// Mimolib includes
#include "matrixseq.h"

namespace mimo
{


class Encoder;
std::ostream& operator<<(std::ostream &os, const Encoder &enc);


class Encoder : public simth::Device
{

  protected:
    unsigned nr_rx;
    unsigned nr_tx;

  public:

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

    virtual ~Encoder();

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

    virtual int getDataLength(int codedLength) const =0;

    virtual int getCodeLength(int rawLength) const =0;

    virtual void Encode(const simth::ModSeq& modulation_symbols,
            CVectorSeq& output_vectors) = 0;


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

    // The factory method init() has been removed because now the
    // object generation is done by the direct factory functions
    // inside DeviceFactory.
};


class SpatialMuxEnc : public Encoder
{
  public:
      
    SpatialMuxEnc(int deviceID, simth::DeviceSystemIntf* system,
          const simth::PropertyList& pl);
    int getDataLength(int codedLength) const;
    
    int getCodeLength(int rawLength) const;
    
    void Encode(const simth::ModSeq& modulation_symbols,
        CVectorSeq& output_vectors);
};

class STBCAlamoutiEnc : public Encoder
{
  private:
    unsigned num_carrier;
  public:

    STBCAlamoutiEnc(int deviceID, simth::DeviceSystemIntf* system,
          const simth::PropertyList& pl);
    int getDataLength(int codedLength) const;
    int getCodeLength(int rawLength) const;
    void Encode(const simth::ModSeq& modulation_symbols,
        CVectorSeq& output_vectors);
    void startOfSimulation();
    void updateOutputLengths();
    void updateInputLengths();
};

class SVDEnc : public Encoder
{
  private:
    unsigned nr_dim;
  public:
      
    SVDEnc(int deviceID, simth::DeviceSystemIntf* system,
       const simth::PropertyList& pl);
    virtual void updateInputLengths();
    virtual void updateOutputLengths();
    void process();

    void Encode(const simth::ModSeq& modulation_symbols,
        CVectorSeq& output_vectors) {};
    int getDataLength(int codedLength) const { return 0; };
    int getCodeLength(int rawLength) const { return 0; };
};

class AntennaSelEnc : public Encoder
{
  private:
    unsigned nr_dim;
  public:
      
    AntennaSelEnc(int deviceID, simth::DeviceSystemIntf* system,
          const simth::PropertyList& pl);
    virtual void updateInputLengths();
    virtual void updateOutputLengths();
    void process();
    
    void Encode(const simth::ModSeq& modulation_symbols,
        CVectorSeq& output_vectors) {};
    int getDataLength(int codedLength) const { return 0; };
    int getCodeLength(int rawLength) const { return 0; };

    static unsigned findMaxColIndex(const mimo::CMatrix& H);
};

class RotAlamoutiEnc : public Encoder
{
  private:
    unsigned num_carrier;

  public:
    RotAlamoutiEnc(int deviceID, simth::DeviceSystemIntf* system,
          const simth::PropertyList& pl);

    int getDataLength(int codedLength) const;

    int getCodeLength(int rawLength) const;

    void Encode(const simth::ModSeq& modulation_symbols,
        CVectorSeq& output_vectors);

    void startOfSimulation();

    void updateOutputLengths();
    
    void updateInputLengths();
};

} // namespace

#endif // MIMO_ENCODER_H

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