blockcollect.h

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:      Collects received symbols from rake and outputs
 |              data when desired amount of symbols is available.
 | Author:      Tommi Makelainen, Nokia/NIST
 | Date:        April 20, 1999
 |
 | History:
 |              April 20, 1999 Tommi Makelainen
 |                      Initial version.
 |
 */

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

/*
 * Data type for a symbol buffer.
 */
struct symbol_buffer_type {
    int	size;			/* block size to collect */
    int fill_index;		/* index to first free slot in ring buffer */
    int read_index;             /* index to first output in ring buffer */
    double *buffer;             /* buffer */
};
typedef struct symbol_buffer_type symbol_buffer_t;

/*
 * Max number of symbol collecting buffers.
 */
#define MAX_SYMBOL_BUFFERS  20


/* -------------------------------------------------------------------- */
/*
 * Function:	wcdma_symbolbuffer_init
 * Desc.:	Inits symbol collect buffer.
 *
 * Note:	
 */
int wcdma_symbolbuffer_init(
        int block_size);	/* IN: block size to collect */

/* -------------------------------------------------------------------- */
/*
 * Function:	wcdma_symbolbuffer_free
 * Desc.:	Frees one frame buffer.
 *
 * Note:	
 */
void wcdma_symbolbuffer_free(int instance);

/* -------------------------------------------------------------------- */
/*
 * Function:	wcdma_symbolbuffer
 * Desc.:	Collects input symbols until symbols enough for
 *              one frame is available. Then outputs one frame.
 *
 * Note:	
 */
int wcdma_symbolbuffer(
           int instance,	/* IN: instance number */
	   double data[],	/* IN: input data symbol vector */
           int data_len,	/* IN: length of input data vector */
           int *output_ready,   /* OUT: 1=output available, 0=no output */
           double out[]);	/* OUT: output symbols for one block */

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