discdemod.h

来自「WCDMA的仿真程序,分别用C和MATLAB两种语言仿真」· C头文件 代码 · 共 73 行

/*
 |
 | 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:      Discrete CDMA downlink demodulation containing QPSK data 
 |		and spreading modulation.
 |		No multipath, i.e. ideal channel and synchronisation.
 | Author:      Tommi Makelainen, Nokia/NIST
 | Date:        February 23, 1999
 |
 | History:
 |              February 23, 1999 Tommi Makelainen
 |                      Initial version.
 |
 */

#include "config_wcdma.h"


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

/*
 * Function:    wcdma_demod_init
 * Desc.:       Discrete data and spreading demodulation initialization.
 *
 * Note:
 */
int wcdma_demod_init(void);

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

/*
 * Function:    wcdma_dl_demod
 * Desc.:       Data and spreading modulation
 *
 * Note:
 *		Input data length can be maximum of 4000 symbols.
 *		Output vector length is:
 *			nInputs / sf * 2
 */
int wcdma_dl_demod(int I_inputs[],	/* I input symbol vector */
		       int Q_inputs[],	/* Q input symbol vector */
                       int nInputs,	/* input vector size */
                       int code[],      /* spreading code */
                       int code_len,	/* length of spreading code */
                       int sf,		/* spreadign factor */
                       int coded_out[]);  /* channel coded output */

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

/*
 * Function:    wcdma_dl_demod_free
 * Desc.:       Discrete modulation clean up function.
 *
 * Note:
 */
int wcdma_dl_demod_free(void);

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