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bscerrorgen.cpp
资源名称：simulation_wireless_c++.rar　[点击查看]
上传用户：jtjnyq9001
上传日期：2014-11-21
资源大小：3974k
文件大小：2k
源码类别：

3G开发

开发平台：

Visual C++

bscerrorgen.cpp：源码内容
  1. //
  2. //  File = bscerrorgen.cpp
  3. //
  5. #include <stdlib.h>
  6. #include <fstream>
  7. #include "parmfile.h"
  8. #include "bscerrorgen.h"
  9. #include "uni_rand.h"
  10. #include "model_graph.h"
  11. #include "syst_graph.h"
  12. #include "misdefs.h"
  13. extern ParmFile *ParmInput;
  14. #ifdef _DEBUG
  15.   extern ofstream *DebugFile;
  16. #endif
  18. #define FLOAT_MODULUS 2147483647.0
  20. //======================================================
  22. BscErrorGener::BscErrorGener( char* instance_name,
  23.                               PracSimModel* outer_model,
  24.                               Signal<bit_t>* in_signal,
  25.                               Signal<bit_t>* out_signal)
  26.               :PracSimModel(instance_name,
  27.                             outer_model)
  28. {
  29.    MODEL_NAME(BscErrorGener);
  31.    In_Sig = in_signal;
  32.    Out_Sig = out_signal;
  34.    OPEN_PARM_BLOCK;
  35.    GET_DOUBLE_PARM(Bit_Error_Probability);
  36.    Decis_Thresh = (unsigned long)
  37.                (Bit_Error_Probability * FLOAT_MODULUS);
  38.    BasicResults << "Decis_Thresh = " << Decis_Thresh 
  39.                 << endl;
  40. #ifdef _DEBUG
  41.    *DebugFile << "Decis_Thresh = " << Decis_Thresh 
  42.               << endl;
  43. #endif
  44.    GET_LONG_PARM(Initial_Seed);
  45.    Working_Seed = Initial_Seed;
  47.    MAKE_OUTPUT( Out_Sig );
  48.    MAKE_INPUT( In_Sig );
  50. }
  52. //======================================================
  53. BscErrorGener::~BscErrorGener( void ){ };
  55. //======================================================
  56. void BscErrorGener::Initialize(void)
  57. {
  58.   Block_Size = In_Sig->GetBlockSize();
  59. };
  61. //======================================================
  62. int BscErrorGener::Execute()
  63. {
  64.    bit_t *in_sig_ptr;
  65.    bit_t output_samp, *out_sig_ptr;
  66.    int is, block_size;
  67.    long working_seed;
  68.    long decis_thresh;
  70.    // Get pointers for input and output signal buffers
  72.    out_sig_ptr = GET_OUTPUT_PTR(Out_Sig);
  73.    in_sig_ptr = GET_INPUT_PTR(In_Sig);
  75.    //  copy frequently used items into local storage
  77.    block_size = In_Sig->GetValidBlockSize();
  78.    Out_Sig->SetValidBlockSize(block_size);
  79.    working_seed = Working_Seed;
  80.    decis_thresh = Decis_Thresh;
  82.    for(is=0; is<block_size; is++){
  83.       output_samp = *in_sig_ptr++;
  85.       RandomLong(&working_seed);
  86.       if(working_seed <= decis_thresh) output_samp ^=1;
  87.       *out_sig_ptr++ = output_samp;
  88.    }
  89.    Working_Seed = working_seed;
  90.    return(_MES_AOK);
  91. }