build_slot.c

这是一个c＋＋编写的WCDMA链路采用RAKE接收的方针源代码

/*
 |
 | 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.
 |
*/

/*
 | Project:	WCDMA simulation environment
 | Module:      Frame building for transport channels.
 | Author:      Tommi Makelainen, Nokia Research Center/NIST
 | Date:        May 18, 1999
 |
 | History:
 |              May 18, 1999 Tommi Makelainen
 |                      Initial version.
 |
 */

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "config_wcdma.h"


/* ------------ S T A T I C   D A T A   S T R U C T U R E S ----------- */

static enum instance_state rake_alloc_list[MAX_RAKES];
static rake_instance_count = 0;
static int init_flags[MAX_RAKES] = { TRUE, TRUE, TRUE, TRUE,
                                     TRUE, TRUE, TRUE, TRUE };
double path_select_level[MAX_RAKES] = { 0 };
static finger_type stored_fingers[MAX_RAKES][MAX_FINGERS];
static mem_chips_t old_chips[MAX_RAKES];
static rake_data_type rake_data[MAX_RAKES];
static finger_count[MAX_RAKES];
static int general_init_flag = FALSE;


/* -------------------------------------------------------------------- */
/*
 * Function:	wcdma_dl_frame_build
 * Desc.:	Build downlink frame for primary and secondary
 *              common control physical channel and dedicated
 *              physical channel. The former carries BCCH,
 *              PCH and FACH. The latter carries dedicated traffic.
 *
 * Returns:	none
 *
 * Note:	
 *              If any of fields below is 0 bits, the field is omitted.
 *
 */
int wcdma_dl_frame_build(
        int nPilotBits,	        /* IN: number of pilot bits */
        int nTPCBits,		/* IN: number of power control bits */
        int nTFIBits,           /* IN: number of transport format bits */
        int nDataBits)          /* IN: number of data bits */
{
    int i, instance;

    return(instance);
}


/* -------------------------------------------------------------------- */
/*
 * Function:	wcdma_slot_build
 * Desc.:	Build a slot with selected fields.
 *
 * Returns:	none
 *
 * Note:	
 *              If any of fields below is 0 bits, the field is omitted.
 *              Maximum length of output buffer is MAX_SLOT_LEN.
 *
 */
int wcdma_slot_build(
        int nPilotBits,	        /* IN: number of pilot bits */
        int pilot[],            /* IN: pilot bit vector */
        int nTPCBits,		/* IN: number of power control bits */
        int tpc[],              /* IN: transmission power control bits */
        int nTFIBits,           /* IN: number of transport format bits */
        int tfi[],              /* IN: transport format indicator bits */
        int nDataBits,          /* IN: number of data bits */
        int data[],             /* IN: data bits */
        int *nOutBits,          /* OUT: number of output bits */
        int outData[])          /* OUT: combined slot */
{
    int offset;

    offset = 0;
    memcpy(outData,        pilot, nPilotBits * sizeof(int) );
    offset += nPilotBits;
    memcpy(outData+offset, tpc,   nTPCBits   * sizeof(int) );
    offset += nTPCBits;
    memcpy(outData+offset, tfi,   nTFIBits   * sizeof(int) );
    offset += nTFIBits;
    memcpy(outData+offset, data,  nDataBits  * sizeof(int) );
    offset += nDataBits;
    
    *nOutBits = offset;

    return(0);
}


/* -------------------------------------------------------------------- */
/*
 * Function:	wcdma_slot_extract
 * Desc.:	Extract fields out of a slot.
 *
 * Returns:	none
 *
 * Note:	
 *              If any of fields below is 0 bits, the field is omitted.
 *              Maximum length of input buffer is MAX_SLOT_LEN.
 *
 */
int wcdma_slot_extract(
        int nInBits,            /* IN: number of input soft bits */
        double inData[],        /* IN: combined slot */
        int nPilotBits,	        /* IN: number of pilot bits */
        double pilot[],         /* OUT: pilot bit vector */
        int nTPCBits,		/* IN: number of power control bits */
        double tpc[],           /* OUT: transmission power control bits */
        int nTFIBits,           /* IN: number of transport format bits */
        double tfi[],           /* OUT: transport format indicator bits */
        int nDataBits,          /* IN: number of data bits */
        double outData[])       /* OUT: data bits */
{
    int offset;

    offset = 0;
    memcpy(pilot,   inData,        nPilotBits * sizeof(double) );
    offset += nPilotBits;
    memcpy(tpc,     inData+offset, nTPCBits   * sizeof(double) );
    offset += nTPCBits;
    memcpy(tfi,     inData+offset, nTFIBits   * sizeof(double) );
    offset += nTFIBits;
    memcpy(outData, inData+offset, nDataBits  * sizeof(double) );
    offset += nDataBits;
    
    return(0);
}


/* ------------------------------------------------------------------- */