qpsk.h

来自「wcdma模型」· C头文件 代码 · 共 66 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:      QPSK data modulation and demodulation
 | Author:      Tommi Makelainen, Nokia/NIST
 | Date:        January 6, 1999
 |
 | History:
 |              January 6, 1999 Tommi Makelainen
 |                      Initial version.
 |
 */

#include <stdio.h>
#include <math.h>

/*
 * Function:    wcdma_dl_qpsk_mod
 * Desc.:       QPSK data modulation
 *
 * Inputs:
 *   data       input data bit vector
 *   data_len   length of input data vector, in bytes.
 * Outputs:
 *   I_out      output I parts of complex symbol vector
 *   Q_out      output Q parts of complex symbol vector
 *   out        output length of complex symbol vector
 *
 * Note:
 *		Incoming data have to be a multiple of full bytes.
 *		Output vectors must be 4 times longer than input vector.
 */
int wcdma_dl_qpsk_mod(char data[], int data_len, char I_out[],
                      char Q_out[], int *out_len);

/*
 * Function:    wcdma_dl_qpsk_demod
 * Desc.:       QPSK data demodulation
 *
 * Inputs:
 *   I_in       input I part of complex symbol vector
 *   Q_in       input Q part of complex symbol vector
 *   in_len     length of input symbol vectors
 * Outputs:
 *   out_data   output symbol vector
 *   out_len    length of output symbol vector
 *
 * Note:
 */
int wcdma_dl_qpsk_demod(char I_in[], char Q_in[], int in_len,
                        char out_data[], int *out_len);