s_pulse_shaping.c

这是一个c＋＋编写的WCDMA链路采用RAKE接收的方针源代码

/*
 | Project:     WCDMA simulation environment
 | Module:      Pulse shaping filter
 |              THIS HAS NOT BEEN IMPLEMENTED YET. 
 |              THIS MODULE IS ONLY AN EMPTY INTERFACE       
 |
 | Author:      
 | Date:        June, 1999
 |
 | History:
 |              June 23, 1999 Maarit Melvasalo
 |
 *
 *  File    : s_pulse_shaping.c
 *  Abstract:
 *
 * USER GIVEN PARAMETERS
 *
 * 1: SIZE_P   = Size of real input vector (= packet size) 
 * 2: ROLL  = roll of factor for pulse shaping
 * 3: SLOTS = Number of slot in a frame
 *
 * Inputs:
 *        Modulated and spread chips
 *               
 * Outputs: 
 *        Shaped 
 *
 |
 | Copyright disclaimer:
 |   This software was developed at the National Institute of Standards
 |   and Technology by employees of the Federal Government in the course
 |   of their official duties. Pursuant to title 17 Section 105 of the
 |   United States Code this software is not subject to copyright
 |   protection and is in the public domain.
 |
 |   We would appreciate acknowledgement if the software is used.
 |
 */

#define S_FUNCTION_NAME s_pulse_shaping
#define S_FUNCTION_LEVEL 2

#include <math.h>
#include "simstruc.h"
#include "tmwtypes.h"
#include "config_wcdma.h"
#include "wcdma_simulink.h"

/* USER GIVEN PARAMETERS AND DEFINITIONS /**/

/*Number of inputs and outputs/**/
#define NINPUTS   1
#define NOUTPUTS  1

/* Number of user given parameters/**/  
#define NPARAMS 3         


/* Input and Output Size parameters /**/

#define SIZE_P(S) ssGetSFcnParam(S,0)          
#define nIn (int_T)(mxGetPr(SIZE_P(S))[0])   



/* Roll of factor for /**/
#define ROLL(S) ssGetSFcnParam(S,1) 

#define SLOTS(S)  ssGetSFcnParam(S,2)
#define nSlots mxGetPr(SLOTS(S))[0] 

/* Pointers to Input Ports */
#define U(element) (*uPtrs[element])  

/* Sampletime -- defined in config_cdma /**/
#define td  TD_FRAME / (real_T)nSlots  


/*====================*
 */
static void mdlInitializeSizes(SimStruct *S)
{
  ssSetNumSFcnParams(S, NPARAMS);  /* Number of expected parameters */

  if (ssGetNumSFcnParams(S) != ssGetSFcnParamsCount(S)) 
 {
      return;
 }
    if (!ssSetNumInputPorts(S, NINPUTS)) return;
    ssSetInputPortWidth(S, 0, nIn);
    ssSetInputPortDirectFeedThrough(S, 0, 1);

    if (!ssSetNumOutputPorts(S, NOUTPUTS)) return;
    ssSetOutputPortWidth(S, 0, nIn);

    ssSetNumSampleTimes(S, 1);

    ssSetSFcnParamNotTunable(S,0); 
    ssSetSFcnParamNotTunable(S,1); 
    ssSetSFcnParamNotTunable(S,2);  

    /* Take care when specifying exception free code - see sfuntmpl.doc */
    ssSetOptions(S, SS_OPTION_EXCEPTION_FREE_CODE);
}   /* ei saa kayttaa mxCalloc tai mexErrMsgTxt tms rutiineita */


/* Function: mdlInitializeSampleTimes =========================================
 */
static void mdlInitializeSampleTimes(SimStruct *S)
{
  ssSetSampleTime(S, 0, td); 
  ssSetOffsetTime(S, 0, 0.0);
}


/* Function: mdlOutputs =======================================================
 */
static void mdlOutputs(SimStruct *S, int_T tid)
{
  real_T            *y    = ssGetOutputPortRealSignal(S,0);
  InputRealPtrsType uPtrs = ssGetInputPortRealSignalPtrs(S,0);
  real_T            roll  = mxGetPr(ROLL(S))[0];
  int_T             i,tmp;            


    for (i = 0; i < nIn; i++)
    y[i] = U(i); /**/
}


/* Function: mdlTerminate =====================================================
 */
static void mdlTerminate(SimStruct *S)
{

}

#ifdef  MATLAB_MEX_FILE    /* Is this file being compiled as a MEX-file? */
#include "simulink.c"      /* MEX-file interface mechanism */
#else
#include "cg_sfun.h"       /* Code generation registration function */
#endif