decodehelpers.h

This a framework to test new ideas in transmission technology. Actual development is a LDPC-coder in

#ifndef DECODEHELPERS_H__
#define DECODEHELPERS_H__

#include <math.h>
#include "graphcreate.h"

/************************************
* copy the received values into the *
* appropriate places in the graph   *
************************************/
void initializegraph(graphs *graph, double *received);


/**********************************
* make decisions on current graph *
**********************************/
void makedecisions(graphs *graph, int *decisions);


/************************************
* sum vnode to f                    *
************************************/
void sumtograph(graphs *graph);


/************************************
* message map at the variable nodes *
* send to other graph               *
************************************/
void graphtographmessagemap(graphs *graph, graphs *tograph, double *received, double *temp, double variance, int indic, double a1, double a2);


/************************************
* message map at the variable nodes *
* schedule can be used if we want   *
* the decoder to be time variant    *
* currently it is not used          *
************************************/
void variablemessagemap(graphs *graph);


/*********************************
* message map at the check nodes *
*********************************/
void checkmessagemap(graphs *graph);


#endif