configured LDPC on CPU and GPU
This commit is contained in:
NCTU OpinConnect Terng-Yin Hsu/WEI-YING,LIN
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@@ -1,54 +0,0 @@
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/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*!\file defs.h
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* \brief LDPC encoder forward declarations
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* \author Florian Kaltenberger, Raymond Knopp, Kien le Trung (Eurecom)
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* \email openair_tech@eurecom.fr
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* \date 27-03-2018
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* \version 1.0
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* \note
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* \warning
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*/
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#include "PHY/TOOLS/time_meas.h"
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/*ldpc_encoder.c*/
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int encode_parity_check_part_orig(unsigned char *c,unsigned char *d, short BG,short Zc,short Kb,short block_length);
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/*ldpc_encoder2.c*/
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void encode_parity_check_part_optim(uint8_t *c,uint8_t *d, short BG,short Zc,short Kb);
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int ldpc_encoder_optim(unsigned char *test_input,unsigned char *channel_input,int Zc,int Kb,short block_length,short BG,time_stats_t *tinput,time_stats_t *tprep,time_stats_t *tparity,time_stats_t *toutput);
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int ldpc_encoder_optim_8seg(unsigned char **test_input,unsigned char **channel_input,int Zc,int Kb,short block_length,short BG,int n_segments,time_stats_t *tinput,time_stats_t *tprep,time_stats_t *tparity,time_stats_t *toutput);
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int ldpc_encoder_optim_8seg_multi(unsigned char **test_input,unsigned char **channel_input,int Zc,int Kb,short block_length, short BG, int n_segments,unsigned int macro_num, time_stats_t *tinput,time_stats_t *tprep,time_stats_t *tparity,time_stats_t *toutput);
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/*ldpc_generate_coefficient.c*/
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int ldpc_encoder_orig(unsigned char *test_input,unsigned char *channel_input,int Zc,int Kb,short block_length,short BG,unsigned char gen_code);
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/*
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int encode_parity_check_part(unsigned char *c,unsigned char *d, short BG,short Zc,short Kb);
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int encode_parity_check_part_orig(unsigned char *c,unsigned char *d, short BG,short Zc,short Kb,short block_length);
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int ldpc_encoder(unsigned char *test_input,unsigned char *channel_input,short block_length, double rate);
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int ldpc_encoder_orig(unsigned char *test_input,unsigned char *channel_input,short block_length,int nom_rate,int denom_rate,unsigned char gen_code);
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int ldpc_encoder_multi_segment(unsigned char **test_input,unsigned char **channel_input,short block_length,double rate,uint8_t n_segments);
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int ldpc_encoder_optim(unsigned char *test_input,unsigned char *channel_input,short block_length,int nom_rate,int denom_rate,time_stats_t *tinput,time_stats_t *tprep,time_stats_t *tparity,time_stats_t *toutput);
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int ldpc_encoder_optim_8seg(unsigned char **test_input,unsigned char **channel_input,short block_length,int nom_rate,int denom_rate,int n_segments,time_stats_t *tinput,time_stats_t *tprep,time_stats_t *tparity,time_stats_t *toutput);
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*/
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@@ -37,77 +37,247 @@
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#include <string.h>
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#include <types.h>
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#include "defs.h"
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#include "assertions.h"
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#include "openair1/PHY/CODING/nrLDPC_defs.h"
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#include "ldpc_generate_coefficient.c"
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short *choose_generator_matrix(short BG,short Zc);
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extern short no_shift_values_BG1[1012],pointer_shift_values_BG1[1012],no_shift_values_BG2[2109],pointer_shift_values_BG2[2019];
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int encode_parity_check_part_orig(unsigned char *c,unsigned char *d, short BG,short Zc,short Kb,short block_length)
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int ldpc_encoder_orig(unsigned char *test_input,unsigned char *channel_input,int Zc,int Kb,short block_length, short BG,unsigned char gen_code)
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{
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short *Gen_shift_values=choose_generator_matrix(BG,Zc);
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short *no_shift_values, *pointer_shift_values;
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int no_punctured_columns;
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short nrows,ncols,rate=3;
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int i1,i2,i3,i4,i5,temp_prime;
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unsigned char c[22*384]; //padded input, unpacked, max size
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unsigned char d[68*384]; //coded output, unpacked, max size
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unsigned char channel_temp,temp;
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short *Gen_shift_values, *no_shift_values, *pointer_shift_values;
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short nrows = 46;//parity check bits
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short ncols = 22;//info bits
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int i,i1,i2,i3,i4,i5,temp_prime,var;
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int no_punctured_columns,removed_bit,rate=3;
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int nind=0;
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int indlist[1000];
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int indlist2[1000];
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//determine number of bits in codeword
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//if (block_length>3840)
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if (BG==1)
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{
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nrows=46; //parity check bits
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ncols=22; //info bits
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rate=3;
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}
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//else if (block_length<=3840)
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else if (BG==2)
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{
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//BG=2;
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nrows=42; //parity check bits
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ncols=10; // info bits
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rate=5;
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}
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Gen_shift_values=choose_generator_matrix(BG,Zc);
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if (Gen_shift_values==NULL) {
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printf("ldpc_encoder_orig: could not find generator matrix\n");
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return(-1);
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}
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//printf("ldpc_encoder_orig: BG %d, Zc %d, Kb %d\n",BG, Zc, Kb);
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// load base graph of generator matrix
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if (BG==1)
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{
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no_shift_values=(short *) no_shift_values_BG1;
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pointer_shift_values=(short *) pointer_shift_values_BG1;
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nrows=46; //parity check bits
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ncols=22; //info bits
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rate=3;
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}
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else if (BG==2)
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{
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no_shift_values=(short *) no_shift_values_BG2;
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pointer_shift_values=(short *) pointer_shift_values_BG2;
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nrows=42; //parity check bits
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ncols=10; //info bits
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rate=5;
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}
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else {
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printf("problem with BG\n");
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return(-1);
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AssertFatal(0,"BG %d is not supported yet\n",BG);
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}
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no_punctured_columns=(int)((nrows-2)*Zc+block_length-block_length*rate)/Zc;
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removed_bit=(nrows-no_punctured_columns-2) * Zc+block_length-(block_length*rate);
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//printf("%d\n",no_punctured_columns);
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//printf("%d\n",removed_bit);
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// unpack input
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memset(c,0,sizeof(unsigned char) * ncols * Zc);
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memset(d,0,sizeof(unsigned char) * nrows * Zc);
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//printf("no_punctured_columns = %d\n",no_punctured_columns);
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for (i2=0; i2 < Zc; i2++)
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for (i=0; i<block_length; i++)
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{
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//t=Kb*Zc+i2;
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//c[i] = test_input[i/8]<<(i%8);
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//c[i]=c[i]>>7&1;
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c[i]=(test_input[i/8]&(128>>(i&7)))>>(7-(i&7));
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}
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//rotate matrix here
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for (i5=0; i5 < Kb; i5++)
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{
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temp = c[i5*Zc];
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memmove(&c[i5*Zc], &c[i5*Zc+1], (Zc-1)*sizeof(unsigned char));
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c[i5*Zc+Zc-1] = temp;
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// parity check part
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if (gen_code==1)
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{
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char fname[100];
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sprintf(fname,"ldpc_BG%d_Zc%d_byte.c",BG,Zc);
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FILE *fd=fopen(fname,"w");
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AssertFatal(fd!=NULL,"cannot open %s\n",fname);
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sprintf(fname,"ldpc_BG%d_Zc%d_16bit.c",BG,Zc);
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FILE *fd2=fopen(fname,"w");
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AssertFatal(fd2!=NULL,"cannot open %s\n",fname);
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int shift;
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char data_type[100];
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char xor_command[100];
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int mask;
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fprintf(fd,"#include \"PHY/sse_intrin.h\"\n");
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fprintf(fd2,"#include \"PHY/sse_intrin.h\"\n");
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if ((Zc&31)==0) {
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shift=5; // AVX2 - 256-bit SIMD
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mask=31;
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strcpy(data_type,"__m256i");
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strcpy(xor_command,"_mm256_xor_si256");
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}
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else if ((Zc&15)==0) {
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shift=4; // SSE4 - 128-bit SIMD
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mask=15;
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strcpy(data_type,"__m128i");
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strcpy(xor_command,"_mm_xor_si128");
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// calculate each row in base graph
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for (i1=0; i1 < nrows-no_punctured_columns; i1++)
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}
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else if ((Zc&7)==0) {
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shift=3; // MMX - 64-bit SIMD
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mask=7;
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strcpy(data_type,"__m64");
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strcpy(xor_command,"_mm_xor_si64");
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}
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else {
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shift=0; // no SIMD
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mask=0;
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strcpy(data_type,"uint8_t");
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strcpy(xor_command,"scalar_xor");
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fprintf(fd,"#define scalar_xor(a,b) ((a)^(b))\n");
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fprintf(fd2,"#define scalar_xor(a,b) ((a)^(b))\n");
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}
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fprintf(fd,"// generated code for Zc=%d, byte encoding\n",Zc);
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fprintf(fd2,"// generated code for Zc=%d, 16bit encoding\n",Zc);
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fprintf(fd,"static inline void ldpc_BG%d_Zc%d_byte(uint8_t *c,uint8_t *d) {\n",BG,Zc);
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fprintf(fd2,"static inline void ldpc_BG%d_Zc%d_16bit(uint16_t *c,uint16_t *d) {\n",BG,Zc);
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fprintf(fd," %s *csimd=(%s *)c,*dsimd=(%s *)d;\n\n",data_type,data_type,data_type);
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fprintf(fd2," %s *csimd=(%s *)c,*dsimd=(%s *)d;\n\n",data_type,data_type,data_type);
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fprintf(fd," %s *c2,*d2;\n\n",data_type);
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fprintf(fd2," %s *c2,*d2;\n\n",data_type);
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fprintf(fd," int i2;\n");
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fprintf(fd2," int i2;\n");
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fprintf(fd," for (i2=0; i2<%d; i2++) {\n",Zc>>shift);
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if (shift > 0)
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fprintf(fd2," for (i2=0; i2<%d; i2++) {\n",Zc>>(shift-1));
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for (i2=0; i2 < 1; i2++)
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{
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channel_temp=0;
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for (i3=0; i3 < Kb; i3++)
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{
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temp_prime=i1 * ncols + i3;
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//t=Kb*Zc+i2;
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// calculate each row in base graph
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for (i4=0; i4 < no_shift_values[temp_prime]; i4++)
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fprintf(fd," c2=&csimd[i2];\n");
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fprintf(fd," d2=&dsimd[i2];\n");
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fprintf(fd2," c2=&csimd[i2];\n");
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fprintf(fd2," d2=&dsimd[i2];\n");
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for (i1=0; i1 < nrows; i1++)
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{
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channel_temp=0;
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fprintf(fd,"\n//row: %d\n",i1);
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fprintf(fd2,"\n//row: %d\n",i1);
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fprintf(fd," d2[%d]=",(Zc*i1)>>shift);
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fprintf(fd2," d2[%d]=",(Zc*i1)>>(shift-1));
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nind=0;
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for (i3=0; i3 < ncols; i3++)
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{
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channel_temp = channel_temp ^ c[ i3*Zc + Gen_shift_values[ pointer_shift_values[temp_prime]+i4 ] ];
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temp_prime=i1 * ncols + i3;
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for (i4=0; i4 < no_shift_values[temp_prime]; i4++)
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{
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var=(int)((i3*Zc + (Gen_shift_values[ pointer_shift_values[temp_prime]+i4 ]+1)%Zc)/Zc);
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int index =var*2*Zc + (i3*Zc + (Gen_shift_values[ pointer_shift_values[temp_prime]+i4 ]+1)%Zc) % Zc;
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indlist[nind] = ((index&mask)*((2*Zc)>>shift)*Kb)+(index>>shift);
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indlist2[nind++] = ((index&(mask>>1))*((2*Zc)>>(shift-1))*Kb)+(index>>(shift-1));
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}
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}
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for (i4=0;i4<nind-1;i4++) {
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fprintf(fd,"%s(c2[%d],",xor_command,indlist[i4]);
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fprintf(fd2,"%s(c2[%d],",xor_command,indlist2[i4]);
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}
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fprintf(fd,"c2[%d]",indlist[i4]);
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fprintf(fd2,"c2[%d]",indlist2[i4]);
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for (i4=0;i4<nind-1;i4++) { fprintf(fd,")"); fprintf(fd2,")"); }
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fprintf(fd,";\n");
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fprintf(fd2,";\n");
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}
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fprintf(fd," }\n}\n");
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fprintf(fd2," }\n}\n");
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}
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fclose(fd);
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fclose(fd2);
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}
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else if(gen_code==0)
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{
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for (i2=0; i2 < Zc; i2++)
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{
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//t=Kb*Zc+i2;
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//rotate matrix here
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for (i5=0; i5 < Kb; i5++)
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{
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temp = c[i5*Zc];
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memmove(&c[i5*Zc], &c[i5*Zc+1], (Zc-1)*sizeof(unsigned char));
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c[i5*Zc+Zc-1] = temp;
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}
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// calculate each row in base graph
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for (i1=0; i1 < nrows-no_punctured_columns; i1++)
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{
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channel_temp=0;
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for (i3=0; i3 < Kb; i3++)
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{
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temp_prime=i1 * ncols + i3;
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for (i4=0; i4 < no_shift_values[temp_prime]; i4++)
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{
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channel_temp = channel_temp ^ c[ i3*Zc + Gen_shift_values[ pointer_shift_values[temp_prime]+i4 ] ];
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}
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}
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d[i2+i1*Zc]=channel_temp;
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//channel_input[t+i1*Zc]=channel_temp;
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}
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d[i2+i1*Zc]=channel_temp;
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//channel_input[t+i1*Zc]=channel_temp;
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}
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}
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return(0);
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// information part and puncture columns
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memcpy(&channel_input[0], &c[2*Zc], (block_length-2*Zc)*sizeof(unsigned char));
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memcpy(&channel_input[block_length-2*Zc], &d[0], ((nrows-no_punctured_columns) * Zc-removed_bit)*sizeof(unsigned char));
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//memcpy(channel_input,c,Kb*Zc*sizeof(unsigned char));
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return 0;
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}
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int nrLDPC_encod(unsigned char **test_input,unsigned char **channel_input,int Zc,int Kb,short block_length, short BG, encoder_implemparams_t *impp) {
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return ldpc_encoder_orig(test_input[0],channel_input[0],Zc,Kb,block_length,BG,impp->gen_code);
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}
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@@ -487,10 +487,10 @@ int ldpc_encoder_optim_8seg_multi(unsigned char **test_input,unsigned char **cha
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macro_segment = 8*macro_num;
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// macro_segment_end = (n_segments > 8*(macro_num+1)) ? 8*(macro_num+1) : n_segments;
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macro_segment_end = macro_segment + (n_segments > 8 ? 8 : n_segments);
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///printf("macro_segment: %d\n", macro_segment);
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///printf("macro_segment_end: %d\n", macro_segment_end );
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macro_segment_end = (n_segments > 8*(macro_num+1)) ? 8*(macro_num+1) : n_segments;
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//macro_segment_end = macro_segment + (n_segments > 8 ? 8 : n_segments);
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//printf("macro_segment: %d\n", macro_segment);
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//printf("macro_segment_end: %d\n", macro_segment_end );
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#ifdef __AVX2__
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__m256i shufmask = _mm256_set_epi64x(0x0303030303030303, 0x0202020202020202,0x0101010101010101, 0x0000000000000000);
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@@ -564,7 +564,7 @@ int ldpc_encoder_optim_8seg_multi(unsigned char **test_input,unsigned char **cha
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for (i=0; i<block_length>>5; i++) {
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c256 = _mm256_and_si256(_mm256_cmpeq_epi8(_mm256_andnot_si256(_mm256_shuffle_epi8(_mm256_set1_epi32(((uint32_t*)test_input[macro_segment])[i]), shufmask),andmask),zero256),masks[0]);
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//for (j=1; j<n_segments; j++) {
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for (j=macro_segment+1; j < macro_segment_end; j++) {
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for (j=macro_segment+1; j < macro_segment_end; j++) {
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c256 = _mm256_or_si256(_mm256_and_si256(_mm256_cmpeq_epi8(_mm256_andnot_si256(_mm256_shuffle_epi8(_mm256_set1_epi32(((uint32_t*)test_input[j])[i]), shufmask),andmask),zero256),masks[j-macro_segment]),c256);
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}
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((__m256i *)c)[i] = c256;
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@@ -35,9 +35,8 @@
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#include <string.h>
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#include "Gen_shift_value.h"
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#include "assertions.h"
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||||
#include "defs.h"
|
||||
|
||||
short *choose_generator_matrix(short BG,short Zc)
|
||||
static inline short *choose_generator_matrix(short BG,short Zc)
|
||||
{
|
||||
short *Gen_shift_values = NULL;
|
||||
|
||||
@@ -361,237 +360,70 @@ short *choose_generator_matrix(short BG,short Zc)
|
||||
return Gen_shift_values;
|
||||
}
|
||||
|
||||
int ldpc_encoder_orig(unsigned char *test_input,unsigned char *channel_input,int Zc,int Kb,short block_length, short BG,unsigned char gen_code)
|
||||
static inline int encode_parity_check_part_orig(unsigned char *c,unsigned char *d, short BG,short Zc,short Kb,short block_length)
|
||||
{
|
||||
unsigned char c[22*384]; //padded input, unpacked, max size
|
||||
unsigned char d[68*384]; //coded output, unpacked, max size
|
||||
short *Gen_shift_values=choose_generator_matrix(BG,Zc);
|
||||
short *no_shift_values, *pointer_shift_values;
|
||||
int no_punctured_columns;
|
||||
short nrows,ncols,rate=3;
|
||||
int i1,i2,i3,i4,i5,temp_prime;
|
||||
unsigned char channel_temp,temp;
|
||||
short *Gen_shift_values, *no_shift_values, *pointer_shift_values;
|
||||
|
||||
short nrows = 46;//parity check bits
|
||||
short ncols = 22;//info bits
|
||||
|
||||
|
||||
int i,i1,i2,i3,i4,i5,temp_prime,var;
|
||||
int no_punctured_columns,removed_bit,rate=3;
|
||||
int nind=0;
|
||||
int indlist[1000];
|
||||
int indlist2[1000];
|
||||
|
||||
//determine number of bits in codeword
|
||||
//if (block_length>3840)
|
||||
if (BG==1)
|
||||
{
|
||||
nrows=46; //parity check bits
|
||||
ncols=22; //info bits
|
||||
rate=3;
|
||||
}
|
||||
//else if (block_length<=3840)
|
||||
else if (BG==2)
|
||||
{
|
||||
//BG=2;
|
||||
nrows=42; //parity check bits
|
||||
ncols=10; // info bits
|
||||
rate=5;
|
||||
}
|
||||
|
||||
Gen_shift_values=choose_generator_matrix(BG,Zc);
|
||||
if (Gen_shift_values==NULL) {
|
||||
printf("ldpc_encoder_orig: could not find generator matrix\n");
|
||||
return(-1);
|
||||
}
|
||||
|
||||
//printf("ldpc_encoder_orig: BG %d, Zc %d, Kb %d\n",BG, Zc, Kb);
|
||||
|
||||
// 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;
|
||||
nrows=46; //parity check bits
|
||||
ncols=22; //info bits
|
||||
rate=3;
|
||||
}
|
||||
else if (BG==2)
|
||||
{
|
||||
no_shift_values=(short *) no_shift_values_BG2;
|
||||
pointer_shift_values=(short *) pointer_shift_values_BG2;
|
||||
nrows=42; //parity check bits
|
||||
ncols=10; //info bits
|
||||
rate=5;
|
||||
}
|
||||
else {
|
||||
AssertFatal(0,"BG %d is not supported yet\n",BG);
|
||||
printf("problem with BG\n");
|
||||
return(-1);
|
||||
}
|
||||
|
||||
|
||||
|
||||
no_punctured_columns=(int)((nrows-2)*Zc+block_length-block_length*rate)/Zc;
|
||||
removed_bit=(nrows-no_punctured_columns-2) * Zc+block_length-(block_length*rate);
|
||||
//printf("%d\n",no_punctured_columns);
|
||||
//printf("%d\n",removed_bit);
|
||||
// unpack input
|
||||
memset(c,0,sizeof(unsigned char) * ncols * Zc);
|
||||
memset(d,0,sizeof(unsigned char) * nrows * Zc);
|
||||
|
||||
for (i=0; i<block_length; i++)
|
||||
//printf("no_punctured_columns = %d\n",no_punctured_columns);
|
||||
|
||||
for (i2=0; i2 < Zc; i2++)
|
||||
{
|
||||
//c[i] = test_input[i/8]<<(i%8);
|
||||
//c[i]=c[i]>>7&1;
|
||||
c[i]=(test_input[i/8]&(128>>(i&7)))>>(7-(i&7));
|
||||
}
|
||||
//t=Kb*Zc+i2;
|
||||
|
||||
// parity check part
|
||||
|
||||
if (gen_code==1)
|
||||
{
|
||||
char fname[100];
|
||||
sprintf(fname,"ldpc_BG%d_Zc%d_byte.c",BG,Zc);
|
||||
FILE *fd=fopen(fname,"w");
|
||||
AssertFatal(fd!=NULL,"cannot open %s\n",fname);
|
||||
sprintf(fname,"ldpc_BG%d_Zc%d_16bit.c",BG,Zc);
|
||||
FILE *fd2=fopen(fname,"w");
|
||||
AssertFatal(fd2!=NULL,"cannot open %s\n",fname);
|
||||
|
||||
int shift;
|
||||
char data_type[100];
|
||||
char xor_command[100];
|
||||
int mask;
|
||||
|
||||
|
||||
|
||||
|
||||
fprintf(fd,"#include \"PHY/sse_intrin.h\"\n");
|
||||
fprintf(fd2,"#include \"PHY/sse_intrin.h\"\n");
|
||||
|
||||
if ((Zc&31)==0) {
|
||||
shift=5; // AVX2 - 256-bit SIMD
|
||||
mask=31;
|
||||
strcpy(data_type,"__m256i");
|
||||
strcpy(xor_command,"_mm256_xor_si256");
|
||||
}
|
||||
else if ((Zc&15)==0) {
|
||||
shift=4; // SSE4 - 128-bit SIMD
|
||||
mask=15;
|
||||
strcpy(data_type,"__m128i");
|
||||
strcpy(xor_command,"_mm_xor_si128");
|
||||
|
||||
}
|
||||
else if ((Zc&7)==0) {
|
||||
shift=3; // MMX - 64-bit SIMD
|
||||
mask=7;
|
||||
strcpy(data_type,"__m64");
|
||||
strcpy(xor_command,"_mm_xor_si64");
|
||||
}
|
||||
else {
|
||||
shift=0; // no SIMD
|
||||
mask=0;
|
||||
strcpy(data_type,"uint8_t");
|
||||
strcpy(xor_command,"scalar_xor");
|
||||
fprintf(fd,"#define scalar_xor(a,b) ((a)^(b))\n");
|
||||
fprintf(fd2,"#define scalar_xor(a,b) ((a)^(b))\n");
|
||||
}
|
||||
fprintf(fd,"// generated code for Zc=%d, byte encoding\n",Zc);
|
||||
fprintf(fd2,"// generated code for Zc=%d, 16bit encoding\n",Zc);
|
||||
fprintf(fd,"static inline void ldpc_BG%d_Zc%d_byte(uint8_t *c,uint8_t *d) {\n",BG,Zc);
|
||||
fprintf(fd2,"static inline void ldpc_BG%d_Zc%d_16bit(uint16_t *c,uint16_t *d) {\n",BG,Zc);
|
||||
fprintf(fd," %s *csimd=(%s *)c,*dsimd=(%s *)d;\n\n",data_type,data_type,data_type);
|
||||
fprintf(fd2," %s *csimd=(%s *)c,*dsimd=(%s *)d;\n\n",data_type,data_type,data_type);
|
||||
fprintf(fd," %s *c2,*d2;\n\n",data_type);
|
||||
fprintf(fd2," %s *c2,*d2;\n\n",data_type);
|
||||
fprintf(fd," int i2;\n");
|
||||
fprintf(fd2," int i2;\n");
|
||||
fprintf(fd," for (i2=0; i2<%d; i2++) {\n",Zc>>shift);
|
||||
if (shift > 0)
|
||||
fprintf(fd2," for (i2=0; i2<%d; i2++) {\n",Zc>>(shift-1));
|
||||
for (i2=0; i2 < 1; i2++)
|
||||
//rotate matrix here
|
||||
for (i5=0; i5 < Kb; i5++)
|
||||
{
|
||||
//t=Kb*Zc+i2;
|
||||
|
||||
// calculate each row in base graph
|
||||
|
||||
|
||||
fprintf(fd," c2=&csimd[i2];\n");
|
||||
fprintf(fd," d2=&dsimd[i2];\n");
|
||||
fprintf(fd2," c2=&csimd[i2];\n");
|
||||
fprintf(fd2," d2=&dsimd[i2];\n");
|
||||
|
||||
for (i1=0; i1 < nrows; i1++)
|
||||
|
||||
{
|
||||
channel_temp=0;
|
||||
fprintf(fd,"\n//row: %d\n",i1);
|
||||
fprintf(fd2,"\n//row: %d\n",i1);
|
||||
fprintf(fd," d2[%d]=",(Zc*i1)>>shift);
|
||||
fprintf(fd2," d2[%d]=",(Zc*i1)>>(shift-1));
|
||||
|
||||
nind=0;
|
||||
|
||||
for (i3=0; i3 < ncols; i3++)
|
||||
{
|
||||
temp_prime=i1 * ncols + i3;
|
||||
|
||||
|
||||
for (i4=0; i4 < no_shift_values[temp_prime]; i4++)
|
||||
{
|
||||
|
||||
var=(int)((i3*Zc + (Gen_shift_values[ pointer_shift_values[temp_prime]+i4 ]+1)%Zc)/Zc);
|
||||
int index =var*2*Zc + (i3*Zc + (Gen_shift_values[ pointer_shift_values[temp_prime]+i4 ]+1)%Zc) % Zc;
|
||||
|
||||
indlist[nind] = ((index&mask)*((2*Zc)>>shift)*Kb)+(index>>shift);
|
||||
indlist2[nind++] = ((index&(mask>>1))*((2*Zc)>>(shift-1))*Kb)+(index>>(shift-1));
|
||||
|
||||
}
|
||||
|
||||
|
||||
}
|
||||
for (i4=0;i4<nind-1;i4++) {
|
||||
fprintf(fd,"%s(c2[%d],",xor_command,indlist[i4]);
|
||||
fprintf(fd2,"%s(c2[%d],",xor_command,indlist2[i4]);
|
||||
}
|
||||
fprintf(fd,"c2[%d]",indlist[i4]);
|
||||
fprintf(fd2,"c2[%d]",indlist2[i4]);
|
||||
for (i4=0;i4<nind-1;i4++) { fprintf(fd,")"); fprintf(fd2,")"); }
|
||||
fprintf(fd,";\n");
|
||||
fprintf(fd2,";\n");
|
||||
|
||||
}
|
||||
fprintf(fd," }\n}\n");
|
||||
fprintf(fd2," }\n}\n");
|
||||
temp = c[i5*Zc];
|
||||
memmove(&c[i5*Zc], &c[i5*Zc+1], (Zc-1)*sizeof(unsigned char));
|
||||
c[i5*Zc+Zc-1] = temp;
|
||||
}
|
||||
fclose(fd);
|
||||
fclose(fd2);
|
||||
}
|
||||
else if(gen_code==0)
|
||||
{
|
||||
for (i2=0; i2 < Zc; i2++)
|
||||
|
||||
// calculate each row in base graph
|
||||
for (i1=0; i1 < nrows-no_punctured_columns; i1++)
|
||||
{
|
||||
//t=Kb*Zc+i2;
|
||||
|
||||
//rotate matrix here
|
||||
for (i5=0; i5 < Kb; i5++)
|
||||
channel_temp=0;
|
||||
for (i3=0; i3 < Kb; i3++)
|
||||
{
|
||||
temp = c[i5*Zc];
|
||||
memmove(&c[i5*Zc], &c[i5*Zc+1], (Zc-1)*sizeof(unsigned char));
|
||||
c[i5*Zc+Zc-1] = temp;
|
||||
}
|
||||
temp_prime=i1 * ncols + i3;
|
||||
|
||||
// calculate each row in base graph
|
||||
for (i1=0; i1 < nrows-no_punctured_columns; i1++)
|
||||
{
|
||||
channel_temp=0;
|
||||
|
||||
for (i3=0; i3 < Kb; i3++)
|
||||
for (i4=0; i4 < no_shift_values[temp_prime]; i4++)
|
||||
{
|
||||
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_temp = channel_temp ^ c[ i3*Zc + Gen_shift_values[ pointer_shift_values[temp_prime]+i4 ] ];
|
||||
}
|
||||
|
||||
d[i2+i1*Zc]=channel_temp;
|
||||
//channel_input[t+i1*Zc]=channel_temp;
|
||||
}
|
||||
d[i2+i1*Zc]=channel_temp;
|
||||
//channel_input[t+i1*Zc]=channel_temp;
|
||||
}
|
||||
}
|
||||
|
||||
// information part and puncture columns
|
||||
memcpy(&channel_input[0], &c[2*Zc], (block_length-2*Zc)*sizeof(unsigned char));
|
||||
memcpy(&channel_input[block_length-2*Zc], &d[0], ((nrows-no_punctured_columns) * Zc-removed_bit)*sizeof(unsigned char));
|
||||
//memcpy(channel_input,c,Kb*Zc*sizeof(unsigned char));
|
||||
return 0;
|
||||
return(0);
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user