snr.c

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

/***************************************************************************
 *    snr.c  -  Calculate the SNR
 *                           -------------------
 *   begin                :  2003-03-24
 *   authors              :  ineiti
 *   emails               :  [e-mail]
 ***************************************************************************/

/***************************************************************************
 *                                Changes
 *                                -------
 * date - name - description
 * 04/03/08 - ineiti - adjusted description
 *
 **************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

/**
 *  A module to test independently the SNR of the received slot. This is to
 * compare against the SNR calculated by the matchde_filter. The sending and
 * reveiving module both need an input of the same random-bytes.
 *  SNR - measure the signal to noise ratio of a transmitted slot. 
 * In order to do this, we send a slot of known random data that
 * is measured on the other side.
 */


#include "spc.h"


#define DBG_LVL 4

int rcv_module_init( void );
void rcv_module_exit( void );

int send_module_init( void );
void send_module_exit( void );


/*
 * Just call the two init-functions
 */
int spc_module_init(void) {

  if( rcv_module_init() < 0 ) {
    PR_DBG( 0, "Couldn't init rcv-part\n" );
    return -1;
  }

  if ( send_module_init() < 0 ) {
    rcv_module_exit();
    PR_DBG( 0, "Couldn't init send-part\n" );
    return -1;
  }

  return 0;
}


/*
 * And call the two exit-funcitons
 */
void spc_module_exit( void ) {

  rcv_module_exit();
  send_module_exit();
}


module_init( spc_module_init );
module_exit( spc_module_exit );