rrc.c

来自「This a framework to test new ideas in tr」· C语言 代码 · 共 77 行

/***************************************************************************
 *    rrc.c  -  Root Raised Cosine filter (pulse shape filter)
 *                           -------------------
 *   begin                :  2002
 *   authors              :  Linus Gasser
 *   emails               :  [e-mail]
 ***************************************************************************/

/***************************************************************************
 *                                Changes
 *                                -------
 * date - name - description
 * 04/03/06 - 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.                                   *
 *                                                                         *
 ***************************************************************************/

/**
 *  This is a pulse-shaper, using a root-raised cosine with roll-off factor
 * 0.22. At the same time it converts the complex-signal to a real signal
 * and upsamples by a factor of 2. So one complex signal is converted into
 * 4 samples.
 *  The main application is to prepare the signal for the STM-cards which
 * take a real, pass-band signal.
 */

#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 );