adc.c 3.65 KB
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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.0  (the "License"); you may not use this file
 * except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.openairinterface.org/?page_id=698
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

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void adc(double *r_re[2],
         double *r_im[2],
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         unsigned int input_offset,
         unsigned int output_offset,
         unsigned int **output,
         unsigned int nb_rx_antennas,
         unsigned int length,
         unsigned char B)
{
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  int i;
  int aa;
  double gain = (double)(1<<(B-1));
  //double gain = 1.0;

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  for (i=0; i<length; i++) {
    for (aa=0; aa<nb_rx_antennas; aa++) {
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      ((short *)output[aa])[((i+output_offset)<<1)]   = (short)(r_re[aa][i+input_offset]*gain);
      ((short *)output[aa])[1+((i+output_offset)<<1)] = (short)(r_im[aa][i+input_offset]*gain);
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      if ((r_re[aa][i+input_offset]*gain) > 30000) {
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        //("Adc outputs %d %e  %d \n",i,((short *)output[0])[((i+output_offset)<<1)], ((i+output_offset)<<1) );
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      }
    }
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    //printf("Adc outputs %d %e  %d \n",i,((short *)output[0])[((i+output_offset)<<1)], ((i+output_offset)<<1) );
  }
}
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void adc_freq(double *r_re[2],
         double *r_im[2],
         unsigned int input_offset,
         unsigned int output_offset,
         unsigned int **output,
         unsigned int nb_rx_antennas,
         unsigned int length,
         unsigned char B)
{

  int i;
  int aa;
  double gain = (double)(1<<(B-1));
  //double gain = 1.0;

  for (i=0; i<length; i++) {
    for (aa=0; aa<nb_rx_antennas; aa++) {
      ((short *)output[aa])[((i+output_offset)<<1)]   = (short)(r_re[aa][i+input_offset]*gain);
      ((short *)output[aa])[1+((i+output_offset)<<1)] = (short)(r_im[aa][i+input_offset]*gain);

      if ((r_re[aa][i+input_offset]*gain) > 30000) {
        //("Adc outputs %d %e  %d \n",i,((short *)output[0])[((i+output_offset)<<1)], ((i+output_offset)<<1) );
      }
    }

    //printf("Adc outputs %d %e  %d \n",i,((short *)output[0])[((i+output_offset)<<1)], ((i+output_offset)<<1) );
  }
}
void adc_prach(double *r_re[2],
         double *r_im[2],
         unsigned int input_offset,
         unsigned int output_offset,
         unsigned int *output,
         unsigned int nb_rx_antennas,
         unsigned int length,
         unsigned char B)
{

  int i;
  int aa;
  double gain = (double)(1<<(B-1));
  //double gain = 1.0;

  for (i=0; i<length; i++) {
    for (aa=0; aa<nb_rx_antennas; aa++) {
      ((short *)output)[((i+output_offset)<<1)]   = (short)(r_re[aa][i+input_offset]*gain);
      ((short *)output)[1+((i+output_offset)<<1)] = (short)(r_im[aa][i+input_offset]*gain);

      if ((r_re[aa][i+input_offset]*gain) > 30000) {
        //("Adc outputs %d %e  %d \n",i,((short *)output[0])[((i+output_offset)<<1)], ((i+output_offset)<<1) );
      }
    }

    //printf("Adc outputs %d %e  %d \n",i,((short *)output[0])[((i+output_offset)<<1)], ((i+output_offset)<<1) );
  }
}