rrc_complex.c

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

/***************************************************************************
 *    rrc_complex.c  -  Does complex rrc-filtering
 *                           -------------------
 *   begin                :  2003
 *   authors              :  linus gasser
 *   emails               :  [e-mail]
 ***************************************************************************/

/***************************************************************************
 *                                Changes
 *                                -------
 * date - name - description
 * 03/11/24 - ineiti - start
 * 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.                                   *
 *                                                                         *
 ***************************************************************************/


#include "spc.h"

/**
 * This module is used to interface the ICS-cards in a fast way. The
 * operations done here should be put in the cards FPGA later.
 *  For the reception-part, two versions exist: one for an 'optimal'
 * receiver (all samples aligned), another for the ICS-receiver, which
 * has the samples all mangled up...
 *  There are different possible pulse-shape filters available. You can
 * find them in the file rrcs.[ch], where you can also add your own
 * filters. The following points are important:
 * - The peak has to be in the middle
 * - The filter should cut half the spectrum
 * - The filter should be short, for optimality...
 */

#define DBG_LVL 4

int ics_rcv_module_init( void );
void ics_rcv_module_exit( void );

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;
  }

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

  return 0;
}


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

  ics_rcv_module_exit();
  rcv_module_exit();
  send_module_exit();
}


module_init( spc_module_init );
module_exit( spc_module_exit );