/* | | 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:      Channel coding combinary block. | Author:      Tommi Makelainen, Nokia/NIST | Date:        February 11, 1999 | | History: |              February 11, 1999 Tommi Makelainen |                      Initial version. |		March 18, 1999 Tommi Makelainen |                      Added possibility to use more than one encoder |                      at the same time. |              May 23, 1999 Tommi Makelainen |                      Extracted interleaver. |                      Added possibility to have many types |                      of channel coding methods (conv. or Turbo). | */#include <stdio.h>#include <math.h>#include "conversions.h"#include "bitroutines.h"#include "config_wcdma.h"#include "mealy.h"#include "metrics.h"#include "convenc.h"#include "interleaver.h"/* * generator polynomials for 3GPP FDD mode convolutional coder *   gen_poly_1 = 0x16f;  557 octal *   gen_poly_2 = 0x1b3;  663 octal *   gen_poly_3 = 0x1c9;  711 octal *//* -------------------------------------------------------------------- *//* * Function:    wcdma_convcoding_init * Desc.:       Convolutional coding and interleaving initialization * * Note: *              Generator polynomials are given as bit masks, *              i.e. 0x5 = 101 in binary = x^2 + 1 in polynomial form. */int wcdma_convcoding_init(int coding_ratio, /* IN: 2 = 1/2, 3 = 1/3 */                          int metric_type,  /* IN: 0=hard, 1=soft */                          int gen_poly_1,   /* IN: 1st generator polynomial */                          int gen_poly_2,   /* IN: 2nd generator polynomial */                          int gen_poly_3,   /* IN: 3rd generator polynomial */                          int input_size);  /* IN: size of input vector *//* -------------------------------------------------------------------- *//* * Function:    wcdma_chcoding_init * Desc.:       Channel coding initialization * * Note: *              The input parameters must fulfill the equation: *                  nInputs = 3 * rows * cols * 		Tail vector is 8 bits long. */int wcdma_chcoding_init(int coder_type,   /* IN: 1=conv., 2=turbo */                       int metric_type,   /* IN: 0=hard, 1=soft */                       int coding_ratio,  /* IN: 2 = 1/2 or 3 = 1/3 */                       int gen_polys[],   /* IN: generator polynomials */                       int input_size);   /* IN: size of input vector *//* -------------------------------------------------------------------- *//* * Function:    wcdma_chcoding_enc * Desc.:       Convolutional coding and interleaving block * * Note: * 		Tail vector is 8 bits long. */int wcdma_chcoding_enc(int coder_type,    /* IN: 1=conv., 2=turbo */                       int coding_ratio,  /* IN: 2 = 1/2 or 3 = 1/3 */                       int inputs[],	  /* IN: input bit vector */                       int nInputs,	  /* IN: input vector size */                       int outputs[],	  /* OUT: output bit vector */                       int tail[],	  /* OUT: tail bits */                       int instance);     /* IN: instance number *//* -------------------------------------------------------------------- *//* * Function:    wcdma_chcoding_free * Desc.:       Convolutional coding and interleaving clear function. * * Note: */int wcdma_chcoding_free(int instance);/* -------------------------------------------------------------------- */