test_ratematching.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:      Test bed for rate matching algortihms.
 | Author:      Tommi Makelainen, Nokia/NIST
 | Date:        June 19, 1999
 |
 | History:
 |              June 19, 1999 Tommi Makelainen
 |                      Initial version.
 |
 */

#include <stdio.h>
#include <math.h>
#include "crc_routines.h"
#include "sratematch.h"

#define INPUT_SIZE 200
#define ARIB_CRC16 0x1021
#define CRC_LEN 16

int tc_block_sizes[] = {60, 100, 120, 200};

int main(int argc, char *argv[])
{
    int i, j, output_size, output_data[200];
    int test_input[8];
    int test_input2[2000];
    int rmatched_data[2000];
    double rmatched_double_data[2000];
    int tx_block_with_crc[2000];
    double rx_doubleblock_with_crc[2000];
    int rx_intblock_with_crc[2000];
    int test_inp_size;
    int size_with_crc;
    int matched_block_size;
    double max_match_ratio;
    short int crc_value;
    int crc_bits[16];

    test_inp_size = 8;
    max_match_ratio = 0.2;
    size_with_crc = test_inp_size + 16;
    matched_block_size = 22;

    for (i=0; i < test_inp_size; i++) {
        test_input[i] = i % 2;
    }

    wcdma_crctable_init (ARIB_CRC16);

    crc_value = wcdma_get_crc_value(test_input, test_inp_size, crc_bits);

    printf("\nCRC value %x\n", crc_value);

    for (i=0; i < test_inp_size; i++) {
        tx_block_with_crc[i] = test_input[i];
    }
    for (i=test_inp_size, j=0; i < size_with_crc; i++, j++) {
        tx_block_with_crc[i] = crc_bits[j];
    }

    printf("\nRate matching input block %d to target block %d.\n",
           size_with_crc, matched_block_size);

    wcdma_rate_match(0, tx_block_with_crc, size_with_crc,
                     max_match_ratio, matched_block_size, rmatched_data);

    printf("\nCompare input and output for rate matching:\n");
    for (i=0; i < size_with_crc; i++) {
        printf("%d ", tx_block_with_crc[i]); 
    }
    printf("\n");
    for (i=0; i < matched_block_size; i++) {
        printf("%d ", rmatched_data[i]); 
    }
    printf("\n");

    printf("\nRate dematching input block %d to original size %d.\n",
            matched_block_size, size_with_crc);
 
    for (i=0; i < matched_block_size; i++) {
        rmatched_double_data[i] = (double)rmatched_data[i];
    }

    wcdma_rate_dematch(0, rmatched_double_data,
                       matched_block_size, max_match_ratio,
                       size_with_crc, rx_doubleblock_with_crc);

    printf("\nCompare input and output for rate dematching:\n");
    for (i=0; i < matched_block_size; i++) {
        printf("%g ", rmatched_double_data[i]); 
    }
    printf("\n");
    for (i=0; i < size_with_crc; i++) {
        printf("%g ", rx_doubleblock_with_crc[i]); 
    }
    printf("\n");

    for (i=0; i < size_with_crc; i++) {
        rx_intblock_with_crc[i] = rx_doubleblock_with_crc[i];
    }

    wcdma_get_crc_value(rx_intblock_with_crc, size_with_crc, crc_bits);

    printf("\nCRC bits in decoding: ");
    for (i=0; i < 16; i++) {
        printf("%x ", crc_bits[i]);
    }
    printf("\n\n");

    return;
}