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Commit 86d01419 authored by letr's avatar letr Committed by Florian Kaltenberger
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add ldpc_encoder.c

parent e5f9246c
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openair1/PHY/CODING/TESTBENCH/choose_generator_matrix.h 0 → 100644
View file @ 86d01419
short *choose_generator_matrix(short BG,short Zc)
{
short *Gen_shift_values;
if (BG==1)
{
switch (Zc)
{
case 2: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_2;
break;
case 3: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_3;
break;
case 4: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_4;
break;
case 5: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_5;
break;
case 6: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_6;
break;
case 7: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_7;
break;
case 8: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_8;
break;
case 9: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_9;
break;
case 10: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_10;
break;
case 11: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_11;
break;
case 12: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_12;
break;
case 13: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_13;
break;
case 14: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_14;
break;
case 15: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_15;
break;
case 16: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_16;
break;
case 18: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_18;
break;
case 20: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_20;
break;
case 22: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_22;
break;
case 24: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_24;
break;
case 26: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_26;
break;
case 28: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_28;
break;
case 30: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_30;
break;
case 32: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_32;
break;
case 36: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_36;
break;
case 40: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_40;
break;
case 44: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_44;
break;
case 48: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_48;
break;
case 52: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_52;
break;
case 56: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_56;
break;
case 60: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_60;
break;
case 64: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_64;
break;
case 72: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_72;
break;
case 80: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_80;
break;
case 88: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_88;
break;
case 96: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_96;
break;
case 104: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_104;
break;
case 112: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_112;
break;
case 120: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_120;
break;
case 128: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_128;
break;
case 144: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_144;
break;
case 160: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_160;
break;
case 176: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_176;
break;
case 192: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_192;
break;
case 208: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_208;
break;
case 224: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_224;
break;
case 240: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_240;
break;
case 256: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_256;
break;
case 288: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_288;
break;
case 320: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_320;
break;
case 352: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_352;
break;
case 384: Gen_shift_values=(short*) Gen_shift_values_BG1_Z_384;
break;
}
}
/*
else if (BG==2)
{
case 2: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_2;
break;
case 3: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_3;
break;
case 4: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_4;
break;
case 5: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_5;
break;
case 6: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_6;
break;
case 7: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_7;
break;
case 8: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_8;
break;
case 9: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_9;
break;
case 10: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_10;
break;
case 11: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_11;
break;
case 12: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_12;
break;
case 13: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_13;
break;
case 14: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_14;
break;
case 15: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_15;
break;
case 16: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_16;
break;
case 18: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_18;
break;
case 20: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_20;
break;
case 22: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_22;
break;
case 24: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_24;
break;
case 26: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_26;
break;
case 28: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_28;
break;
case 30: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_30;
break;
case 32: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_32;
break;
case 36: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_36;
break;
case 40: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_40;
break;
case 44: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_44;
break;
case 48: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_48;
break;
case 52: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_52;
break;
case 56: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_56;
break;
case 60: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_60;
break;
case 64: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_64;
break;
case 72: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_72;
break;
case 80: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_80;
break;
case 88: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_88;
break;
case 96: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_96;
break;
case 104: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_104;
break;
case 112: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_112;
break;
case 120: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_120;
break;
case 128: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_128;
break;
case 144: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_144;
break;
case 160: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_160;
break;
case 176: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_176;
break;
case 192: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_192;
break;
case 208: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_208;
break;
case 224: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_224;
break;
case 240: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_240;
break;
case 256: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_256;
break;
case 288: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_288;
break;
case 320: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_320;
break;
case 352: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_352;
break;
case 384: Gen_shift_values=(short*) Gen_shift_values_BG2_Z_384;
break;
}
*/
return Gen_shift_values;
}
openair1/PHY/CODING/TESTBENCH/ldpc_encoder.c 0 → 100644
View file @ 86d01419
#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
short *ldpc_encoder_header(short *test_input,short block_length,double rate)
{
short *c; //padded codeword
short *channel_input; //output sequence
short *Gen_shift_values, *no_shift_values, *pointer_shift_values;
short BG,Zc,Kb,nrows,ncols,channel_temp;
int i1,i2,i3,i4,i5,t,temp,temp_prime;
int no_punctured_columns;
//Table of possible lifting sizes
short lift_size[51]={2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18,20,22,24,26,28,30,32,36,40,44,48,52,56,60,64,72,80,88,96,104,112,120,128,144,160,176,192,208,224,240,256,288,320,352,384};
//determine number of bits in codeword
if (block_length>3840)
{
BG=1;
Kb = 22;
nrows=46; //parity check bits
ncols=22; //info bits
}
else if (block_length<=3840)
{
BG=2;
nrows=42; //parity check bits
ncols=10; // info bits
if (block_length>640)
Kb = 10;
else if (block_length>560)
Kb = 9;
else if (block_length>192)
Kb = 8;
else
Kb = 6;
}
//find minimum value in all sets of lifting size
for (i1=0; i1 < 51; i1++)
{
if (lift_size[i1] >= (double) block_length/Kb)
{
Zc = lift_size[i1];
//printf("%d\n",Zc);
break;
}
}
// load base graph of generator matrix
if (BG==1)
{
no_shift_values=(short*) no_shift_values_BG1;
pointer_shift_values=(short*) pointer_shift_values_BG1;
}
else if (BG==2)
{
no_shift_values=(short*) no_shift_values_BG2;
pointer_shift_values=(short*) pointer_shift_values_BG2;
}
Gen_shift_values=choose_generator_matrix(BG,Zc);
no_punctured_columns=(int)((nrows+Kb-2)*Zc-block_length/rate)/Zc;
//printf("%d\n",no_punctured_columns);
//padded input sequence
c=(short *)malloc(sizeof(short) * Kb * Zc);
channel_input = (short *)malloc( (Kb+nrows-no_punctured_columns) * Zc *sizeof(short));
memset(c,0,sizeof(short) * Kb * Zc);
memcpy(c,test_input,block_length * sizeof(short));
// parity check part
for (i2=0; i2 < Zc; i2++)
{
t=Kb*Zc+i2;
//rotate matrix here
for (i5=0; i5 < Kb; i5++)
{
temp = c[i5*Zc];
memmove(&c[i5*Zc], &c[i5*Zc+1], (Zc-1)*sizeof(short));
c[i5*Zc+Zc-1] = temp;
}
// calculate each row in base graph
for (i1=0; i1 < nrows-no_punctured_columns; i1++)
{
channel_temp=0;
for (i3=0; i3 < Kb; i3++)
{
temp_prime=i1 * ncols + i3;
for (i4=0; i4 < no_shift_values[temp_prime]; i4++)
{
channel_temp = channel_temp ^ c[ i3*Zc + Gen_shift_values[ pointer_shift_values[temp_prime]+i4 ] ];
}
}
channel_input[t+i1*Zc]=channel_temp;
}
}
// information part
memcpy(channel_input,c,Kb*Zc*sizeof(short));
return channel_input;
}
openair1/PHY/CODING/TESTBENCH/ldpc_encoder_header.h 0 → 100644
View file @ 86d01419
short *ldpc_encoder_header(short *test_input,short block_length,double rate)
{
short *c; //padded codeword
short *channel_input; //output sequence
short *Gen_shift_values, *no_shift_values, *pointer_shift_values;
short BG,Zc,Kb,nrows,ncols,channel_temp;
int i1,i2,i3,i4,i5,t,temp,temp_prime;
int no_punctured_columns;
//Table of possible lifting sizes
short lift_size[51]={2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18,20,22,24,26,28,30,32,36,40,44,48,52,56,60,64,72,80,88,96,104,112,120,128,144,160,176,192,208,224,240,256,288,320,352,384};
//determine number of bits in codeword
if (block_length>3840)
{
BG=1;
Kb = 22;
nrows=46; //parity check bits
ncols=22; //info bits
}
else if (block_length<=3840)
{
BG=2;
nrows=42; //parity check bits
ncols=10; // info bits
if (block_length>640)
Kb = 10;
else if (block_length>560)
Kb = 9;
else if (block_length>192)
Kb = 8;
else
Kb = 6;
}
//find minimum value in all sets of lifting size
for (i1=0; i1 < 51; i1++)
{
if (lift_size[i1] >= (double) block_length/Kb)
{
Zc = lift_size[i1];
//printf("%d\n",Zc);
break;
}
}
// load base graph of generator matrix
if (BG==1)
{
no_shift_values=(short*) no_shift_values_BG1;
pointer_shift_values=(short*) pointer_shift_values_BG1;
}
else if (BG==2)
{
no_shift_values=(short*) no_shift_values_BG2;
pointer_shift_values=(short*) pointer_shift_values_BG2;
}
Gen_shift_values=choose_generator_matrix(BG,Zc);
no_punctured_columns=(int)((nrows+Kb-2)*Zc-block_length/rate)/Zc;
//printf("%d\n",no_punctured_columns);
//padded input sequence
c=(short *)malloc(sizeof(short) * Kb * Zc);
channel_input = (short *)malloc( (Kb+nrows-no_punctured_columns) * Zc *sizeof(short));
memset(c,0,sizeof(short) * Kb * Zc);
memcpy(c,test_input,block_length * sizeof(short));
// parity check part
for (i2=0; i2 < Zc; i2++)
{
t=Kb*Zc+i2;
//rotate matrix here
for (i5=0; i5 < Kb; i5++)
{
temp = c[i5*Zc];
memmove(&c[i5*Zc], &c[i5*Zc+1], (Zc-1)*sizeof(short));
c[i5*Zc+Zc-1] = temp;
}
// calculate each row in base graph
for (i1=0; i1 < nrows-no_punctured_columns; i1++)
{
channel_temp=0;
for (i3=0; i3 < Kb; i3++)
{
temp_prime=i1 * ncols + i3;
for (i4=0; i4 < no_shift_values[temp_prime]; i4++)
{
channel_temp = channel_temp ^ c[ i3*Zc + Gen_shift_values[ pointer_shift_values[temp_prime]+i4 ] ];
}
}
channel_input[t+i1*Zc]=channel_temp;
}
}
// information part
memcpy(channel_input,c,Kb*Zc*sizeof(short));
return channel_input;
}
openair1/PHY/CODING/TESTBENCH/ldpc_encoder_header.h~ 0 → 100644
View file @ 86d01419
short *ldpc_encoder_header(short *test_input,short block_length,double rate)
{
short *c; //padded codeword
short *channel_input; //output sequence
short *Gen_shift_values, *no_shift_values, *pointer_shift_values;
short BG,Zc,Kb,nrows,ncols,channel_temp;
int i1,i2,i3,i4,i5,t,temp,temp_prime;
int no_punctured_columns;
//Table of possible lifting sizes
short lift_size[51]={2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,18,20,22,24,26,28,30,32,36,40,44,48,52,56,60,64,72,80,88,96,104,112,120,128,144,160,176,192,208,224,240,256,288,320,352,384};
//determine number of bits in codeword
if (block_length>3840)
{
BG=1;
Kb = 22;
nrows=46; //parity check bits
ncols=22; //info bits
}
else if (block_length<=3840)
{
BG=2;
nrows=42; //parity check bits
ncols=10; // info bits
if (block_length>640)
Kb = 10;
else if (block_length>560)
Kb = 9;
else if (block_length>192)
Kb = 8;
else
Kb = 6;
}
//find minimum value in all sets of lifting size
for (i1=0; i1 < 51; i1++)
{
if (lift_size[i1] >= (double) block_length/Kb)
{
Zc = lift_size[i1];
printf("%d\n",Zc);
break;
}
}
// load base graph of generator matrix
if (BG==1)
{
no_shift_values=(short*) no_shift_values_BG1;
pointer_shift_values=(short*) pointer_shift_values_BG1;
}
else if (BG==2)
{
no_shift_values=(short*) no_shift_values_BG2;
pointer_shift_values=(short*) pointer_shift_values_BG2;
}
Gen_shift_values=choose_generator_matrix(BG,Zc);
no_punctured_columns=(int)((nrows+Kb-2)*Zc-block_length/rate)/Zc;
printf("%d\n",no_punctured_columns);
//padded input sequence
c=(short *)malloc(sizeof(short) * Kb * Zc);
channel_input = (short *)malloc( (Kb+nrows-no_punctured_columns) * Zc *sizeof(short));
memset(c,0,sizeof(short) * Kb * Zc);
memcpy(c,test_input,block_length * sizeof(short));
// parity check part
for (i2=0; i2 < Zc; i2++)
{
t=Kb*Zc+i2;
//rotate matrix here
for (i5=0; i5 < Kb; i5++)
{
temp = c[i5*Zc];
memmove(&c[i5*Zc], &c[i5*Zc+1], (Zc-1)*sizeof(short));
c[i5*Zc+Zc-1] = temp;
}
// calculate each row in base graph
for (i1=0; i1 < nrows-no_punctured_columns; i1++)
{
channel_temp=0;
for (i3=0; i3 < Kb; i3++)
{
temp_prime=i1 * ncols + i3;
for (i4=0; i4 < no_shift_values[temp_prime]; i4++)
{
channel_temp = channel_temp ^ c[ i3*Zc + Gen_shift_values[ pointer_shift_values[temp_prime]+i4 ] ];
}
}
channel_input[t+i1*Zc]=channel_temp;
}
}
// information part
memcpy(channel_input,c,Kb*Zc*sizeof(short));
return channel_input;
}
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