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Commit c5c3c325 authored by Raymond Knopp's avatar Raymond Knopp
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added all optimizations except rate matching for N=512 polar-encoder.

parent 6f38c94d
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Showing with 356 additions and 267 deletions
openair1/PHY/CODING/nrPolar_tools/nr_polar_defs.h
View file @ c5c3c325
......@@ -78,54 +78,56 @@ typedef struct decoder_tree_t_s {
} decoder_tree_t;
struct nrPolar_params {
//messageType: 0=PBCH, 1=DCI, -1=UCI
int idx; //idx = (messageType * messageLength * aggregation_prime);
struct nrPolar_params *nextPtr;
uint8_t n_max;
uint8_t i_il;
uint8_t i_seg;
uint8_t n_pc;
uint8_t n_pc_wm;
uint8_t i_bil;
uint16_t payloadBits;
uint16_t encoderLength;
uint8_t crcParityBits;
uint8_t crcCorrectionBits;
uint16_t K;
uint16_t N;
uint8_t n;
uint32_t crcBit;
uint16_t *interleaving_pattern;
uint16_t *rate_matching_pattern;
const uint16_t *Q_0_Nminus1;
int16_t *Q_I_N;
int16_t *Q_F_N;
int16_t *Q_PC_N;
uint8_t *information_bit_pattern;
uint16_t *channel_interleaver_pattern;
uint32_t crc_polynomial;
uint8_t **crc_generator_matrix; //G_P
uint8_t **G_N;
uint32_t* crc256Table;
//messageType: 0=PBCH, 1=DCI, -1=UCI
int idx; //idx = (messageType * messageLength * aggregation_prime);
struct nrPolar_params *nextPtr;
uint8_t n_max;
uint8_t i_il;
uint8_t i_seg;
uint8_t n_pc;
uint8_t n_pc_wm;
uint8_t i_bil;
uint16_t payloadBits;
uint16_t encoderLength;
uint8_t crcParityBits;
uint8_t crcCorrectionBits;
uint16_t K;
uint16_t N;
uint8_t n;
uint32_t crcBit;
uint16_t *interleaving_pattern;
uint16_t *rate_matching_pattern;
const uint16_t *Q_0_Nminus1;
int16_t *Q_I_N;
int16_t *Q_F_N;
int16_t *Q_PC_N;
uint8_t *information_bit_pattern;
uint16_t *channel_interleaver_pattern;
uint32_t crc_polynomial;
uint8_t **crc_generator_matrix; //G_P
uint8_t **G_N;
uint64_t **G_N_tab;
uint64_t cprime_tab[8][256];
uint32_t* crc256Table;
uint8_t **extended_crc_generator_matrix;
//lowercase: bits, Uppercase: Bits stored in bytes
//polar_encoder vectors
uint8_t *nr_polar_crc;
uint8_t *nr_polar_aPrime;
uint8_t *nr_polar_APrime;
uint8_t *nr_polar_D;
uint8_t *nr_polar_E;
//Polar Coding vectors
uint8_t *nr_polar_A;
uint8_t *nr_polar_CPrime;
uint8_t *nr_polar_B;
uint8_t *nr_polar_U;
decoder_tree_t tree;
//lowercase: bits, Uppercase: Bits stored in bytes
//polar_encoder vectors
uint8_t *nr_polar_crc;
uint8_t *nr_polar_aPrime;
uint8_t *nr_polar_APrime;
uint8_t *nr_polar_D;
uint8_t *nr_polar_E;
//Polar Coding vectors
uint8_t *nr_polar_A;
uint8_t *nr_polar_CPrime;
uint8_t *nr_polar_B;
uint8_t *nr_polar_U;
decoder_tree_t tree;
} __attribute__ ((__packed__));
typedef struct nrPolar_params t_nrPolar_params;
typedef t_nrPolar_params *t_nrPolar_paramsPtr;
......
openair1/PHY/CODING/nrPolar_tools/nr_polar_encoder.c
View file @ c5c3c325
......@@ -28,289 +28,376 @@
* \email turker.yilmaz@eurecom.fr
* \note
* \warning
*/
*/
//#define DEBUG_POLAR_ENCODER
//#define DEBUG_POLAR_ENCODER_DCI
//#define DEBUG_POLAR_ENCODER_TIMING
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
#include "assertions.h"
//input [a_31 a_30 ... a_0]
//output [f_31 f_30 ... f_0] [f_63 f_62 ... f_32] ...
void polar_encoder(uint32_t *in,
uint32_t *out,
t_nrPolar_paramsPtr polarParams)
uint32_t *out,
t_nrPolar_paramsPtr polarParams)
{
if (polarParams->idx == 0){//PBCH
nr_bit2byte_uint32_8_t(in, polarParams->payloadBits, polarParams->nr_polar_A);
/*
* Bytewise operations
*/
//Calculate CRC.
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_A,
polarParams->crc_generator_matrix,
polarParams->nr_polar_crc,
polarParams->payloadBits,
polarParams->crcParityBits);
for (uint8_t i = 0; i < polarParams->crcParityBits; i++)
polarParams->nr_polar_crc[i] = (polarParams->nr_polar_crc[i] % 2);
//Attach CRC to the Transport Block. (a to b)
for (uint16_t i = 0; i < polarParams->payloadBits; i++)
polarParams->nr_polar_B[i] = polarParams->nr_polar_A[i];
for (uint16_t i = polarParams->payloadBits; i < polarParams->K; i++)
polarParams->nr_polar_B[i]= polarParams->nr_polar_crc[i-(polarParams->payloadBits)];
} else { //UCI
}
//Interleaving (c to c')
nr_polar_interleaver(polarParams->nr_polar_B,
polarParams->nr_polar_CPrime,
polarParams->interleaving_pattern,
polarParams->K);
//Bit insertion (c' to u)
nr_polar_bit_insertion(polarParams->nr_polar_CPrime,
polarParams->nr_polar_U,
polarParams->N,
polarParams->K,
polarParams->Q_I_N,
polarParams->Q_PC_N,
polarParams->n_pc);
//Encoding (u to d)
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_U,
polarParams->G_N,
polarParams->nr_polar_D,
polarParams->N,
polarParams->N);
for (uint16_t i = 0; i < polarParams->N; i++)
polarParams->nr_polar_D[i] = (polarParams->nr_polar_D[i] % 2);
//Rate matching
//Sub-block interleaving (d to y) and Bit selection (y to e)
nr_polar_interleaver(polarParams->nr_polar_D,
polarParams->nr_polar_E,
polarParams->rate_matching_pattern,
polarParams->encoderLength);
/*
* Return bits.
*/
if (polarParams->idx == 0){//PBCH
nr_bit2byte_uint32_8_t(in, polarParams->payloadBits, polarParams->nr_polar_A);
/*
* Bytewise operations
*/
//Calculate CRC.
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_A,
polarParams->crc_generator_matrix,
polarParams->nr_polar_crc,
polarParams->payloadBits,
polarParams->crcParityBits);
for (uint8_t i = 0; i < polarParams->crcParityBits; i++)
polarParams->nr_polar_crc[i] = (polarParams->nr_polar_crc[i] % 2);
//Attach CRC to the Transport Block. (a to b)
for (uint16_t i = 0; i < polarParams->payloadBits; i++)
polarParams->nr_polar_B[i] = polarParams->nr_polar_A[i];
for (uint16_t i = polarParams->payloadBits; i < polarParams->K; i++)
polarParams->nr_polar_B[i]= polarParams->nr_polar_crc[i-(polarParams->payloadBits)];
} else { //UCI
}
//Interleaving (c to c')
nr_polar_interleaver(polarParams->nr_polar_B,
polarParams->nr_polar_CPrime,
polarParams->interleaving_pattern,
polarParams->K);
//Bit insertion (c' to u)
nr_polar_bit_insertion(polarParams->nr_polar_CPrime,
polarParams->nr_polar_U,
polarParams->N,
polarParams->K,
polarParams->Q_I_N,
polarParams->Q_PC_N,
polarParams->n_pc);
//Encoding (u to d)
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_U,
polarParams->G_N,
polarParams->nr_polar_D,
polarParams->N,
polarParams->N);
for (uint16_t i = 0; i < polarParams->N; i++)
polarParams->nr_polar_D[i] = (polarParams->nr_polar_D[i] % 2);
//Rate matching
//Sub-block interleaving (d to y) and Bit selection (y to e)
nr_polar_interleaver(polarParams->nr_polar_D,
polarParams->nr_polar_E,
polarParams->rate_matching_pattern,
polarParams->encoderLength);
/*
* Return bits.
*/
#ifdef DEBUG_POLAR_ENCODER
for (int i=0; i< polarParams->encoderLength;i++) printf("f[%d]=%d\n", i, polarParams->nr_polar_E[i]);
for (int i=0; i< polarParams->encoderLength;i++) printf("f[%d]=%d\n", i, polarParams->nr_polar_E[i]);
#endif
nr_byte2bit_uint8_32_t(polarParams->nr_polar_E, polarParams->encoderLength, out);
nr_byte2bit_uint8_32_t(polarParams->nr_polar_E, polarParams->encoderLength, out);
}
void polar_encoder_dci(uint32_t *in,
uint32_t *out,
t_nrPolar_paramsPtr polarParams,
uint16_t n_RNTI)
uint32_t *out,
t_nrPolar_paramsPtr polarParams,
uint16_t n_RNTI)
{
#ifdef DEBUG_POLAR_ENCODER_DCI
printf("[polar_encoder_dci] in: [0]->0x%08x \t [1]->0x%08x \t [2]->0x%08x \t [3]->0x%08x\n", in[0], in[1], in[2], in[3]);
printf("[polar_encoder_dci] in: [0]->0x%08x \t [1]->0x%08x \t [2]->0x%08x \t [3]->0x%08x\n", in[0], in[1], in[2], in[3]);
#endif
/*
* Bytewise operations
*/
//(a to a')
nr_bit2byte_uint32_8_t(in, polarParams->payloadBits, polarParams->nr_polar_A);
for (int i=0; i<polarParams->crcParityBits; i++) polarParams->nr_polar_APrime[i]=1;
for (int i=0; i<polarParams->payloadBits; i++) polarParams->nr_polar_APrime[i+(polarParams->crcParityBits)]=polarParams->nr_polar_A[i];
/*
* Bytewise operations
*/
//(a to a')
nr_bit2byte_uint32_8_t(in, polarParams->payloadBits, polarParams->nr_polar_A);
for (int i=0; i<polarParams->crcParityBits; i++) polarParams->nr_polar_APrime[i]=1;
for (int i=0; i<polarParams->payloadBits; i++) polarParams->nr_polar_APrime[i+(polarParams->crcParityBits)]=polarParams->nr_polar_A[i];
#ifdef DEBUG_POLAR_ENCODER_DCI
printf("[polar_encoder_dci] A: ");
for (int i=0; i<polarParams->payloadBits; i++) printf("%d-", polarParams->nr_polar_A[i]);
printf("\n");
printf("[polar_encoder_dci] APrime: ");
for (int i=0; i<polarParams->K; i++) printf("%d-", polarParams->nr_polar_APrime[i]);
printf("\n");
printf("[polar_encoder_dci] GP: ");
for (int i=0; i<polarParams->crcParityBits; i++) printf("%d-", polarParams->crc_generator_matrix[0][i]);
printf("\n");
printf("[polar_encoder_dci] A: ");
for (int i=0; i<polarParams->payloadBits; i++) printf("%d-", polarParams->nr_polar_A[i]);
printf("\n");
printf("[polar_encoder_dci] APrime: ");
for (int i=0; i<polarParams->K; i++) printf("%d-", polarParams->nr_polar_APrime[i]);
printf("\n");
printf("[polar_encoder_dci] GP: ");
for (int i=0; i<polarParams->crcParityBits; i++) printf("%d-", polarParams->crc_generator_matrix[0][i]);
printf("\n");
#endif
//Calculate CRC.
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_APrime,
polarParams->crc_generator_matrix,
polarParams->nr_polar_crc,
polarParams->K,
polarParams->crcParityBits);
for (uint8_t i = 0; i < polarParams->crcParityBits; i++) polarParams->nr_polar_crc[i] = (polarParams->nr_polar_crc[i] % 2);
//Calculate CRC.
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_APrime,
polarParams->crc_generator_matrix,
polarParams->nr_polar_crc,
polarParams->K,
polarParams->crcParityBits);
for (uint8_t i = 0; i < polarParams->crcParityBits; i++) polarParams->nr_polar_crc[i] = (polarParams->nr_polar_crc[i] % 2);
#ifdef DEBUG_POLAR_ENCODER_DCI
printf("[polar_encoder_dci] CRC: ");
for (int i=0; i<polarParams->crcParityBits; i++) printf("%d-", polarParams->nr_polar_crc[i]);
printf("\n");
printf("[polar_encoder_dci] CRC: ");
for (int i=0; i<polarParams->crcParityBits; i++) printf("%d-", polarParams->nr_polar_crc[i]);
printf("\n");
#endif
//Attach CRC to the Transport Block. (a to b)
for (uint16_t i = 0; i < polarParams->payloadBits; i++)
polarParams->nr_polar_B[i] = polarParams->nr_polar_A[i];
for (uint16_t i = polarParams->payloadBits; i < polarParams->K; i++)
polarParams->nr_polar_B[i]= polarParams->nr_polar_crc[i-(polarParams->payloadBits)];
//Scrambling (b to c)
for (int i=0; i<16; i++) {
polarParams->nr_polar_B[polarParams->payloadBits+8+i] =
( polarParams->nr_polar_B[polarParams->payloadBits+8+i] + ((n_RNTI>>(15-i))&1) ) % 2;
}
/* //(a to a')
//Attach CRC to the Transport Block. (a to b)
for (uint16_t i = 0; i < polarParams->payloadBits; i++)
polarParams->nr_polar_B[i] = polarParams->nr_polar_A[i];
for (uint16_t i = polarParams->payloadBits; i < polarParams->K; i++)
polarParams->nr_polar_B[i]= polarParams->nr_polar_crc[i-(polarParams->payloadBits)];
//Scrambling (b to c)
for (int i=0; i<16; i++) {
polarParams->nr_polar_B[polarParams->payloadBits+8+i] =
( polarParams->nr_polar_B[polarParams->payloadBits+8+i] + ((n_RNTI>>(15-i))&1) ) % 2;
}
/* //(a to a')
nr_crc_bit2bit_uint32_8_t(in, polarParams->payloadBits, polarParams->nr_polar_aPrime);
//Parity bits computation (p)
polarParams->crcBit = crc24c(polarParams->nr_polar_aPrime, (polarParams->payloadBits+polarParams->crcParityBits));
#ifdef DEBUG_POLAR_ENCODER_DCI
#ifdef DEBUG_POLAR_ENCODER_DCI
printf("[polar_encoder_dci] crc: 0x%08x\n", polarParams->crcBit);
for (int i=0; i<32; i++)
{
printf("%d\n",((polarParams->crcBit)>>i)&1);
printf("%d\n",((polarParams->crcBit)>>i)&1);
}
#endif
#endif
//(a to b)
//
// Bytewise operations
//
uint8_t arrayInd = ceil(polarParams->payloadBits / 8.0);
for (int i=0; i<arrayInd-1; i++){
for (int j=0; j<8; j++) {
polarParams->nr_polar_B[j+(i*8)] = ((polarParams->nr_polar_aPrime[3+i]>>(7-j)) & 1);
}
for (int j=0; j<8; j++) {
polarParams->nr_polar_B[j+(i*8)] = ((polarParams->nr_polar_aPrime[3+i]>>(7-j)) & 1);
}
}
for (int i=0; i<((polarParams->payloadBits)%8); i++) {
polarParams->nr_polar_B[i+(arrayInd-1)*8] = ((polarParams->nr_polar_aPrime[3+(arrayInd-1)]>>(7-i)) & 1);
polarParams->nr_polar_B[i+(arrayInd-1)*8] = ((polarParams->nr_polar_aPrime[3+(arrayInd-1)]>>(7-i)) & 1);
}
for (int i=0; i<8; i++) {
polarParams->nr_polar_B[polarParams->payloadBits+i] = ((polarParams->crcBit)>>(31-i))&1;
polarParams->nr_polar_B[polarParams->payloadBits+i] = ((polarParams->crcBit)>>(31-i))&1;
}
//Scrambling (b to c)
for (int i=0; i<16; i++) {
polarParams->nr_polar_B[polarParams->payloadBits+8+i] =
( (((polarParams->crcBit)>>(23-i))&1) + ((n_RNTI>>(15-i))&1) ) % 2;
polarParams->nr_polar_B[polarParams->payloadBits+8+i] =
( (((polarParams->crcBit)>>(23-i))&1) + ((n_RNTI>>(15-i))&1) ) % 2;
}*/
#ifdef DEBUG_POLAR_ENCODER_DCI
printf("[polar_encoder_dci] B: ");
for (int i = 0; i < polarParams->K; i++) printf("%d-", polarParams->nr_polar_B[i]);
printf("\n");
printf("[polar_encoder_dci] B: ");
for (int i = 0; i < polarParams->K; i++) printf("%d-", polarParams->nr_polar_B[i]);
printf("\n");
#endif
//Interleaving (c to c')
nr_polar_interleaver(polarParams->nr_polar_B,
polarParams->nr_polar_CPrime,
polarParams->interleaving_pattern,
polarParams->K);
//Bit insertion (c' to u)
nr_polar_bit_insertion(polarParams->nr_polar_CPrime,
polarParams->nr_polar_U,
polarParams->N,
polarParams->K,
polarParams->Q_I_N,
polarParams->Q_PC_N,
polarParams->n_pc);
//Encoding (u to d)
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_U,
polarParams->G_N,
polarParams->nr_polar_D,
polarParams->N,
polarParams->N);
for (uint16_t i = 0; i < polarParams->N; i++)
polarParams->nr_polar_D[i] = (polarParams->nr_polar_D[i] % 2);
//Rate matching
//Sub-block interleaving (d to y) and Bit selection (y to e)
nr_polar_interleaver(polarParams->nr_polar_D,
polarParams->nr_polar_E,
polarParams->rate_matching_pattern,
polarParams->encoderLength);
/*
* Return bits.
*/
nr_byte2bit_uint8_32_t(polarParams->nr_polar_E, polarParams->encoderLength, out);
//Interleaving (c to c')
nr_polar_interleaver(polarParams->nr_polar_B,
polarParams->nr_polar_CPrime,
polarParams->interleaving_pattern,
polarParams->K);
//Bit insertion (c' to u)
nr_polar_bit_insertion(polarParams->nr_polar_CPrime,
polarParams->nr_polar_U,
polarParams->N,
polarParams->K,
polarParams->Q_I_N,
polarParams->Q_PC_N,
polarParams->n_pc);
//Encoding (u to d)
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_U,
polarParams->G_N,
polarParams->nr_polar_D,
polarParams->N,
polarParams->N);
for (uint16_t i = 0; i < polarParams->N; i++)
polarParams->nr_polar_D[i] = (polarParams->nr_polar_D[i] % 2);
//Rate matching
//Sub-block interleaving (d to y) and Bit selection (y to e)
nr_polar_interleaver(polarParams->nr_polar_D,
polarParams->nr_polar_E,
polarParams->rate_matching_pattern,
polarParams->encoderLength);
/*
* Return bits.
*/
nr_byte2bit_uint8_32_t(polarParams->nr_polar_E, polarParams->encoderLength, out);
#ifdef DEBUG_POLAR_ENCODER_DCI
printf("[polar_encoder_dci] E: ");
for (int i = 0; i < polarParams->encoderLength; i++) printf("%d-", polarParams->nr_polar_E[i]);
uint8_t outputInd = ceil(polarParams->encoderLength / 32.0);
printf("\n[polar_encoder_dci] out: ");
for (int i = 0; i < outputInd; i++) {
printf("[%d]->0x%08x\t", i, out[i]);
}
printf("[polar_encoder_dci] E: ");
for (int i = 0; i < polarParams->encoderLength; i++) printf("%d-", polarParams->nr_polar_E[i]);
uint8_t outputInd = ceil(polarParams->encoderLength / 32.0);
printf("\n[polar_encoder_dci] out: ");
for (int i = 0; i < outputInd; i++) {
printf("[%d]->0x%08x\t", i, out[i]);
}
#endif
}
void polar_encoder_timing(uint32_t *in,
uint32_t *out,
t_nrPolar_paramsPtr polarParams,
double cpuFreqGHz,
FILE* logFile)
uint32_t *out,
t_nrPolar_paramsPtr polarParams,
double cpuFreqGHz,
FILE* logFile)
{
//Initiate timing.
time_stats_t timeEncoderCRCByte, timeEncoderCRCBit, timeEncoderInterleaver, timeEncoderBitInsertion, timeEncoder1, timeEncoder2, timeEncoderRateMatching, timeEncoderByte2Bit;
reset_meas(&timeEncoderCRCByte); reset_meas(&timeEncoderCRCBit); reset_meas(&timeEncoderInterleaver); reset_meas(&timeEncoderBitInsertion); reset_meas(&timeEncoder1); reset_meas(&timeEncoder2); reset_meas(&timeEncoderRateMatching); reset_meas(&timeEncoderByte2Bit);
uint16_t n_RNTI=0x0000;
//Initiate timing.
time_stats_t timeEncoderCRCByte, timeEncoderCRCBit, timeEncoderInterleaver, timeEncoderBitInsertion, timeEncoder1, timeEncoder2, timeEncoderRateMatching, timeEncoderByte2Bit;
reset_meas(&timeEncoderCRCByte); reset_meas(&timeEncoderCRCBit); reset_meas(&timeEncoderInterleaver); reset_meas(&timeEncoderBitInsertion); reset_meas(&timeEncoder1); reset_meas(&timeEncoder2); reset_meas(&timeEncoderRateMatching); reset_meas(&timeEncoderByte2Bit);
uint16_t n_RNTI=0x0000;
start_meas(&timeEncoderCRCByte);
nr_crc_bit2bit_uint32_8_t(in, polarParams->payloadBits, polarParams->nr_polar_aPrime); //(a to a')
polarParams->crcBit = crc24c(polarParams->nr_polar_aPrime, (polarParams->payloadBits+polarParams->crcParityBits)); //Parity bits computation (p)
uint8_t arrayInd = ceil(polarParams->payloadBits / 8.0); //(a to b)
for (int i=0; i<arrayInd-1; i++)
for (int j=0; j<8; j++)
polarParams->nr_polar_B[j+(i*8)] = ((polarParams->nr_polar_aPrime[3+i]>>(7-j)) & 1);
for (int i=0; i<((polarParams->payloadBits)%8); i++) polarParams->nr_polar_B[i+(arrayInd-1)*8] = ((polarParams->nr_polar_aPrime[3+(arrayInd-1)]>>(7-i)) & 1);
for (int i=0; i<8; i++) polarParams->nr_polar_B[polarParams->payloadBits+i] = ((polarParams->crcBit)>>(31-i))&1;
for (int i=0; i<16; i++) polarParams->nr_polar_B[polarParams->payloadBits+8+i] = ( (((polarParams->crcBit)>>(23-i))&1) + ((n_RNTI>>(15-i))&1) ) % 2; //Scrambling (b to c)
stop_meas(&timeEncoderCRCByte);
start_meas(&timeEncoderCRCByte);
nr_crc_bit2bit_uint32_8_t(in, polarParams->payloadBits, polarParams->nr_polar_aPrime); //(a to a')
polarParams->crcBit = crc24c(polarParams->nr_polar_aPrime, (polarParams->payloadBits+polarParams->crcParityBits)); //Parity bits computation (p)
uint8_t arrayInd = ceil(polarParams->payloadBits / 8.0); //(a to b)
for (int i=0; i<arrayInd-1; i++)
for (int j=0; j<8; j++)
polarParams->nr_polar_B[j+(i*8)] = ((polarParams->nr_polar_aPrime[3+i]>>(7-j)) & 1);
for (int i=0; i<((polarParams->payloadBits)%8); i++) polarParams->nr_polar_B[i+(arrayInd-1)*8] = ((polarParams->nr_polar_aPrime[3+(arrayInd-1)]>>(7-i)) & 1);
for (int i=0; i<8; i++) polarParams->nr_polar_B[polarParams->payloadBits+i] = ((polarParams->crcBit)>>(31-i))&1;
for (int i=0; i<16; i++) polarParams->nr_polar_B[polarParams->payloadBits+8+i] = ( (((polarParams->crcBit)>>(23-i))&1) + ((n_RNTI>>(15-i))&1) ) % 2; //Scrambling (b to c)
stop_meas(&timeEncoderCRCByte);
start_meas(&timeEncoderCRCBit);
nr_bit2byte_uint32_8_t(in, polarParams->payloadBits, polarParams->nr_polar_A);
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_A, polarParams->crc_generator_matrix, polarParams->nr_polar_crc, polarParams->payloadBits, polarParams->crcParityBits); //Calculate CRC.
for (uint8_t i = 0; i < polarParams->crcParityBits; i++) polarParams->nr_polar_crc[i] = (polarParams->nr_polar_crc[i] % 2);
for (uint16_t i = 0; i < polarParams->payloadBits; i++) polarParams->nr_polar_B[i] = polarParams->nr_polar_A[i]; //Attach CRC to the Transport Block. (a to b)
for (uint16_t i = polarParams->payloadBits; i < polarParams->K; i++) polarParams->nr_polar_B[i]= polarParams->nr_polar_crc[i-(polarParams->payloadBits)];
stop_meas(&timeEncoderCRCBit);
start_meas(&timeEncoderCRCBit);
nr_bit2byte_uint32_8_t(in, polarParams->payloadBits, polarParams->nr_polar_A);
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_A, polarParams->crc_generator_matrix, polarParams->nr_polar_crc, polarParams->payloadBits, polarParams->crcParityBits); //Calculate CRC.
for (uint8_t i = 0; i < polarParams->crcParityBits; i++) polarParams->nr_polar_crc[i] = (polarParams->nr_polar_crc[i] % 2);
for (uint16_t i = 0; i < polarParams->payloadBits; i++) polarParams->nr_polar_B[i] = polarParams->nr_polar_A[i]; //Attach CRC to the Transport Block. (a to b)
for (uint16_t i = polarParams->payloadBits; i < polarParams->K; i++) polarParams->nr_polar_B[i]= polarParams->nr_polar_crc[i-(polarParams->payloadBits)];
stop_meas(&timeEncoderCRCBit);
start_meas(&timeEncoderInterleaver); //Interleaving (c to c')
nr_polar_interleaver(polarParams->nr_polar_B, polarParams->nr_polar_CPrime, polarParams->interleaving_pattern, polarParams->K);
stop_meas(&timeEncoderInterleaver);
start_meas(&timeEncoderInterleaver); //Interleaving (c to c')
nr_polar_interleaver(polarParams->nr_polar_B, polarParams->nr_polar_CPrime, polarParams->interleaving_pattern, polarParams->K);
stop_meas(&timeEncoderInterleaver);
start_meas(&timeEncoderBitInsertion); //Bit insertion (c' to u)
nr_polar_bit_insertion(polarParams->nr_polar_CPrime, polarParams->nr_polar_U, polarParams->N, polarParams->K, polarParams->Q_I_N, polarParams->Q_PC_N, polarParams->n_pc);
stop_meas(&timeEncoderBitInsertion);
start_meas(&timeEncoderBitInsertion); //Bit insertion (c' to u)
nr_polar_bit_insertion(polarParams->nr_polar_CPrime, polarParams->nr_polar_U, polarParams->N, polarParams->K, polarParams->Q_I_N, polarParams->Q_PC_N, polarParams->n_pc);
stop_meas(&timeEncoderBitInsertion);
start_meas(&timeEncoder1); //Encoding (u to d)
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_U, polarParams->G_N, polarParams->nr_polar_D, polarParams->N, polarParams->N);
stop_meas(&timeEncoder1);
start_meas(&timeEncoder1); //Encoding (u to d)
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(polarParams->nr_polar_U, polarParams->G_N, polarParams->nr_polar_D, polarParams->N, polarParams->N);
stop_meas(&timeEncoder1);
start_meas(&timeEncoder2);
for (uint16_t i = 0; i < polarParams->N; i++) polarParams->nr_polar_D[i] = (polarParams->nr_polar_D[i] % 2);
stop_meas(&timeEncoder2);
start_meas(&timeEncoder2);
for (uint16_t i = 0; i < polarParams->N; i++) polarParams->nr_polar_D[i] = (polarParams->nr_polar_D[i] % 2);
stop_meas(&timeEncoder2);
start_meas(&timeEncoderRateMatching);//Rate matching //Sub-block interleaving (d to y) and Bit selection (y to e)
nr_polar_interleaver(polarParams->nr_polar_D, polarParams->nr_polar_E, polarParams->rate_matching_pattern, polarParams->encoderLength);
stop_meas(&timeEncoderRateMatching);
start_meas(&timeEncoderRateMatching);//Rate matching //Sub-block interleaving (d to y) and Bit selection (y to e)
nr_polar_interleaver(polarParams->nr_polar_D, polarParams->nr_polar_E, polarParams->rate_matching_pattern, polarParams->encoderLength);
stop_meas(&timeEncoderRateMatching);
start_meas(&timeEncoderByte2Bit); //Return bits.
nr_byte2bit_uint8_32_t(polarParams->nr_polar_E, polarParams->encoderLength, out);
stop_meas(&timeEncoderByte2Bit);
fprintf(logFile,",%f,%f,%f,%f,%f,%f,%f,%f\n",
(timeEncoderCRCByte.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoderCRCBit.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoderInterleaver.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoderBitInsertion.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoder1.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoder2.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoderRateMatching.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoderByte2Bit.diff_now/(cpuFreqGHz*1000.0)));
}
void build_polar_tables(t_nrPolar_paramsPtr polarParams) {
// build table b -> c'
AssertFatal(polarParams->K > 32, "K = %d < 33, is not supported yet\n",polarParams->K);
AssertFatal(polarParams->K < 65, "K = %d > 64, is not supported yet\n",polarParams->K);
int bit_i;
for (int byte=0;byte<8;byte++) {
for (int val=0;val<256;val++) {
for (int i=0;i<8;i++) {
bit_i=(val>>i)&1;
polarParams->cprime_tab[byte][val] |= (bit_i<<polarParams->interleaving_pattern[(8*byte)+i]);
}
}
}
AssertFatal(polarParams->N==512,"N = %d, not done yet\n",polarParams->N);
// build G bit vectors for information bit positions and convert the bit as bytes tables in nr_polar_kronecker_power_matrices.c to 64 bit packed vectors.
// keep only rows of G which correspond to information/crc bits
for (int i=0;i<polarParams->K;i++) {
memset((void*)polarParams->G_N_tab[i],0,(polarParams->N/64)*sizeof(uint64_t));
for (int j=0;j<polarParams->N;j++)
polarParams->G_N_tab[i][j/64] |= polarParams->G_N[polarParams->Q_I_N[i]][j]<<(j&63);
}
}
start_meas(&timeEncoderByte2Bit); //Return bits.
nr_byte2bit_uint8_32_t(polarParams->nr_polar_E, polarParams->encoderLength, out);
stop_meas(&timeEncoderByte2Bit);
void polar_encoder_fast(void *in,
void *out,
int bitlen,
void *crcmask,
t_nrPolar_paramsPtr polarParams) {
AssertFatal(polarParams->K > 32, "K = %d < 33, is not supported yet\n",polarParams->K);
AssertFatal(polarParams->K < 65, "K = %d > 64, is not supported yet\n",polarParams->K);
uint64_t A,B,Cprime;
uint64_t D[8] __attribute__((aligned(32)));
// append crc
B = A | (crc24c(A,bitlen)<<bitlen);
uint8_t *Bbyte = (uint8_t*)&B;
// for each byte of B, lookup in corresponding table for 64-bit word corresponding to tha byte and its position
Cprime = polarParams->cprime_tab[0][Bbyte[0]] |
polarParams->cprime_tab[1][Bbyte[1]] |
polarParams->cprime_tab[2][Bbyte[2]] |
polarParams->cprime_tab[3][Bbyte[3]] |
polarParams->cprime_tab[4][Bbyte[4]] |
polarParams->cprime_tab[5][Bbyte[5]] |
polarParams->cprime_tab[6][Bbyte[6]] |
polarParams->cprime_tab[7][Bbyte[7]];
// now do Gu product (here using 64-bit XORs, we can also do with SIMD after)
// here we're reading out the bits LSB -> MSB, is this correct w.r.t. 3GPP ?
uint64_t Cprime_i = -(Cprime & 1); // this converts bit 0 as, 0 => 0000x00, 1 => 1111x11
D[0] = Cprime_i & polarParams->G_N_tab[0][0];
D[1] = Cprime_i & polarParams->G_N_tab[0][1];
D[2] = Cprime_i & polarParams->G_N_tab[0][2];
D[3] = Cprime_i & polarParams->G_N_tab[0][3];
D[4] = Cprime_i & polarParams->G_N_tab[0][4];
D[5] = Cprime_i & polarParams->G_N_tab[0][5];
D[6] = Cprime_i & polarParams->G_N_tab[0][6];
D[7] = Cprime_i & polarParams->G_N_tab[0][7];
for (int i=1;i<bitlen;i++) {
Cprime_i = -((Cprime>>i)&1);
D[0] ^= (Cprime_i & polarParams->G_N_tab[i][0]);
D[1] ^= (Cprime_i & polarParams->G_N_tab[i][1]);
D[2] ^= (Cprime_i & polarParams->G_N_tab[i][2]);
D[3] ^= (Cprime_i & polarParams->G_N_tab[i][3]);
D[4] ^= (Cprime_i & polarParams->G_N_tab[i][4]);
D[5] ^= (Cprime_i & polarParams->G_N_tab[i][5]);
D[6] ^= (Cprime_i & polarParams->G_N_tab[i][6]);
D[7] ^= (Cprime_i & polarParams->G_N_tab[i][7]);
}
// Rate matching on the 8 64-bit D bit-strings should be performed more or less like
// The interleaving on the single 64-bit input in the first step. We just need 64 lookup tables I guess, and they will have large entries
fprintf(logFile,",%f,%f,%f,%f,%f,%f,%f,%f\n",
(timeEncoderCRCByte.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoderCRCBit.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoderInterleaver.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoderBitInsertion.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoder1.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoder2.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoderRateMatching.diff_now/(cpuFreqGHz*1000.0)),
(timeEncoderByte2Bit.diff_now/(cpuFreqGHz*1000.0)));
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_procedures.c
View file @ c5c3c325
......@@ -33,15 +33,15 @@
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
void nr_polar_bit_insertion(uint8_t *input,
uint8_t *output,
uint16_t N,
uint16_t K,
int16_t *Q_I_N,
int16_t *Q_PC_N,
uint8_t n_PC)
uint8_t *output,
uint16_t N,
uint16_t K,
int16_t *Q_I_N,
int16_t *Q_PC_N,
uint8_t n_PC)
{
uint16_t k=0;
uint8_t flag;
uint16_t k=0;
uint8_t flag;
if (n_PC>0) {
/*
......
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