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Polar coding update 2of2

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This commit is contained in:
yilmazt
2018-08-22 17:24:29 +02:00
parent fdbf8e7f40
commit 2e44c4c186
5 changed files with 62 additions and 35 deletions
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openair1/PHY/CODING/TESTBENCH/polartest.c
+2 -2
View File
@@ -175,7 +175,7 @@ int main(int argc, char *argv[]) {
printf("testInput: [0]->0x%08x \t [1]->0x%08x \t [2]->0x%08x \t [3]->0x%08x\n",
testInput[0], testInput[1], testInput[2], testInput[3]);
return (0);
currentPtr = nr_polar_params(nrPolar_params, polarMessageType, testLength);
currentPtr = nr_polar_params(nrPolar_params, polarMessageType, testLength, aggregation_level);
polar_encoder(testInput, encoderOutput, currentPtr);
printf("AFTER POLAR ENCODING\n");
printf("testInput: [0]->0x%08x \t [1]->0x%08x \t [2]->0x%08x \t [3]->0x%08x\n",
@@ -185,7 +185,7 @@ int main(int argc, char *argv[]) {
return (0);
#endif
currentPtr = nr_polar_params(nrPolar_params, polarMessageType, testLength);
currentPtr = nr_polar_params(nrPolar_params, polarMessageType, testLength, aggregation_level);
// We assume no a priori knowledge available about the payload.
double aPrioriArray[currentPtr->payloadBits];
openair1/PHY/CODING/nrPolar_tools/nr_polar_defs.h
+2 -9
View File
@@ -109,7 +109,7 @@ void polar_encoder(uint32_t *input,
void polar_encoder_dci(uint32_t *in,
uint32_t *out,
t_nrPolar_paramsPtr polarParams,
uint32_t n_RNTI);
uint16_t n_RNTI);
int8_t polar_decoder(double *input,
uint32_t *output,
@@ -297,14 +297,7 @@ uint8_t **crc11_generator_matrix(uint16_t payloadSizeBits);
uint8_t **crc6_generator_matrix(uint16_t payloadSizeBits);
static inline void nr_polar_rate_matcher(uint8_t *input,
unsigned char *output,
uint16_t *pattern,
uint16_t size)
{
for (int i=0; i<size; i++) output[i]=input[pattern[i]];
}
//Also nr_polar_rate_matcher
static inline void nr_polar_interleaver(uint8_t *input,
uint8_t *output,
uint16_t *pattern,
openair1/PHY/CODING/nrPolar_tools/nr_polar_encoder.c
+45 -10
View File
@@ -30,6 +30,8 @@
* \warning
*/
#define DEBUG_POLAR_ENCODER_DCI
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
void polar_encoder(uint32_t *in,
@@ -85,10 +87,10 @@ void polar_encoder(uint32_t *in,
//Rate matching
//Sub-block interleaving (d to y) and Bit selection (y to e)
nr_polar_rate_matcher(polarParams->nr_polar_D,
polarParams->nr_polar_E,
polarParams->rate_matching_pattern,
polarParams->encoderLength);
nr_polar_interleaver(polarParams->nr_polar_D,
polarParams->nr_polar_E,
polarParams->rate_matching_pattern,
polarParams->encoderLength);
/*
* Return bits.
@@ -99,12 +101,38 @@ void polar_encoder(uint32_t *in,
void polar_encoder_dci(uint32_t *in,
uint32_t *out,
t_nrPolar_paramsPtr polarParams,
uint32_t n_RNTI)
{ //(a to a')
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]);
#endif
//(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
printf("[polar_encoder_dci] crc: 0x%08x\n", polarParams->crcBit);
#endif
//(a to b)
//Using "nr_polar_aPrime" to hold "nr_polar_b".
uint8_t arrayInd = ceil(polarParams->payloadBits / 32.0);
for (int j=0; j<arrayInd-1; j++) {
for (int i=0; i<32; i++) {
polarParams->nr_polar_B[i+j*32] = (in[j]>>i)&1;
}
}
for (int i=0; i<((polarParams->payloadBits)%32); i++) {
polarParams->nr_polar_B[i+(arrayInd-1)*32] = (in[(arrayInd-1)]>>i)&1;
}
for (int i=0; i<8; i++) {
polarParams->nr_polar_B[polarParams->payloadBits+i] = ((polarParams->crcBit)>>(31-i))&1;
}
//Scrambling
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;
}
//Interleaving (c to c')
nr_polar_interleaver(polarParams->nr_polar_B,
@@ -132,13 +160,20 @@ void polar_encoder_dci(uint32_t *in,
//Rate matching
//Sub-block interleaving (d to y) and Bit selection (y to e)
nr_polar_rate_matcher(polarParams->nr_polar_D,
polarParams->nr_polar_E,
polarParams->rate_matching_pattern,
polarParams->encoderLength);
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
uint8_t outputInd = ceil(polarParams->encoderLength / 32.0);
printf("[polar_encoder_dci] out: ");
for (int i = 0; i < outputInd; i++) {
printf("[%d]->0x%08x\t", i, out[i]);
}
#endif
}
openair1/PHY/CODING/nr_polar_init.c
+3 -2
View File
@@ -201,9 +201,10 @@ t_nrPolar_paramsPtr nr_polar_params (t_nrPolar_paramsPtr polarParams,
uint16_t nr_polar_aggregation_prime (uint8_t aggregation_level)
{
if (aggregation_level == 1) return NR_POLAR_AGGREGATION_LEVEL_1_PRIME;
if (aggregation_level == 0) return 0;
else if (aggregation_level == 1) return NR_POLAR_AGGREGATION_LEVEL_1_PRIME;
else if (aggregation_level == 2) return NR_POLAR_AGGREGATION_LEVEL_2_PRIME;
else if (aggregation_level == 4) return NR_POLAR_AGGREGATION_LEVEL_4_PRIME;
else if (aggregation_level == 8) return NR_POLAR_AGGREGATION_LEVEL_8_PRIME;
else return NR_POLAR_AGGREGATION_LEVEL_16_PRIME;
else return NR_POLAR_AGGREGATION_LEVEL_16_PRIME; //aggregation_level == 16
}
openair1/PHY/NR_TRANSPORT/nr_dci.c
+10 -12
View File
@@ -34,7 +34,7 @@
//#define DEBUG_PDCCH_DMRS
//#define DEBUG_DCI
#define DEBUG_POLAR_PARAMS
//#define DEBUG_POLAR_PARAMS
extern short nr_mod_table[NR_MOD_TABLE_SIZE_SHORT];
@@ -203,30 +203,28 @@ uint8_t nr_generate_dci_top(NR_gNB_PDCCH pdcch_vars,
/// DCI payload processing
// CRC attachment + Scrambling + Channel coding + Rate matching
uint32_t scrambled_payload[NR_MAX_DCI_SIZE_DWORD];
uint32_t n_RNTI = (pdcch_params.search_space_type == NFAPI_NR_SEARCH_SPACE_TYPE_UE_SPECIFIC)? pdcch_params.rnti : 0;
//nr_polar_init(nrPolar_params, NR_POLAR_DCI_MESSAGE_TYPE, dci_alloc.size, dci_alloc.L);
//t_nrPolar_paramsPtr currentPtr = nr_polar_params(*nrPolar_params, NR_POLAR_DCI_MESSAGE_TYPE, dci_alloc.size, dci_alloc.L);
//polar_encoder_dci(dci_alloc.dci_pdu, scrambled_payload, currentPtr, n_RNTI);
uint32_t encoder_output[NR_MAX_DCI_SIZE_DWORD];
uint16_t n_RNTI = (pdcch_params.search_space_type == NFAPI_NR_SEARCH_SPACE_TYPE_UE_SPECIFIC)? pdcch_params.rnti : 0;
nr_polar_init(nrPolar_params, NR_POLAR_DCI_MESSAGE_TYPE, dci_alloc.size, dci_alloc.L);
t_nrPolar_paramsPtr currentPtr = nr_polar_params(*nrPolar_params, NR_POLAR_DCI_MESSAGE_TYPE, dci_alloc.size, dci_alloc.L);
polar_encoder_dci(dci_alloc.dci_pdu, encoder_output, currentPtr, n_RNTI);
#ifdef DEBUG_POLAR_PARAMS
printf("\n\nInt = %d \t Hex = 0x%08x\n\n",n_RNTI,n_RNTI);
/*printf("DCI PDU: [0]->0x%08x \t [1]->0x%08x \t [2]->0x%08x \t [3]->0x%08x\n",
dci_alloc.dci_pdu[0], dci_alloc.dci_pdu[1], dci_alloc.dci_pdu[2], dci_alloc.dci_pdu[3]);
printf("Encoded Payload: [0]->0x%08x \t [1]->0x%08x \t [2]->0x%08x \t [3]->0x%08x\n",
scrambled_payload[0], scrambled_payload[1], scrambled_payload[2], scrambled_payload[3]);*/
return 0;
encoder_output[0], encoder_output[1], encoder_output[2], encoder_output[3]);*/
#endif
// QPSK modulation
int16_t mod_dci[NR_MAX_DCI_SIZE>>1];
for (int i=0; i<encoded_length>>1; i++) {
idx = (((scrambled_payload[i<<1]>>(i<<1))&1)<<1) ^ ((scrambled_payload[(i<<1)+1]>>((i<<1)+1))&1);
idx = (((encoder_output[i<<1]>>(i<<1))&1)<<1) ^ ((encoder_output[(i<<1)+1]>>((i<<1)+1))&1);
mod_dci[i<<1] = nr_mod_table[(NR_MOD_TABLE_QPSK_OFFSET + idx)<<1];
mod_dci[(i<<1)+1] = nr_mod_table[((NR_MOD_TABLE_QPSK_OFFSET + idx)<<1) + 1];
#ifdef DEBUG_DCI
printf("i %d idx %d b0-b1 %d-%d mod_dci %d %d\n", i, idx, (((scrambled_payload[(i<<1)>>5])>>((i<<1)&0x1f))&1),
(((scrambled_payload[((i<<1)+1)>>5])>>(((i<<1)+1)&0x1f))&1), mod_dci[(i<<1)], mod_dci[(i<<1)+1]);
printf("i %d idx %d b0-b1 %d-%d mod_dci %d %d\n", i, idx, (((encoder_output[(i<<1)>>5])>>((i<<1)&0x1f))&1),
(((encoder_output[((i<<1)+1)>>5])>>(((i<<1)+1)&0x1f))&1), mod_dci[(i<<1)], mod_dci[(i<<1)+1]);
#endif
}