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Commit 5cf8d93a authored by Guy De Souza's avatar Guy De Souza
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NR Polar imports

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openair1/PHY/CODING/TESTBENCH/polartest.c 0 → 100644
View file @ 5cf8d93a
#include <math.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include <time.h>
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
#include "PHY/CODING/nrPolar_tools/nr_polar_pbch_defs.h"
#include "SIMULATION/TOOLS/defs.h"
int main(int argc, char *argv[]) {
//Initiate timing. (Results depend on CPU Frequency. Therefore, might change due to performance variances during simulation.)
time_stats_t timeEncoder,timeDecoder;
opp_enabled=1;
cpu_freq_GHz = get_cpu_freq_GHz();
reset_meas(&timeEncoder);
reset_meas(&timeDecoder);
randominit(0);
//Default simulation values (Aim for iterations = 1000000.)
int itr, iterations = 1000, arguments, polarMessageType = 1; //0=DCI, 1=PBCH, 2=UCI
double SNRstart = -20.0, SNRstop = 20.0, SNRinc= 0.5; //dB
double SNR, SNR_lin;
int16_t nBitError = 0; // -1 = Decoding failed (All list entries have failed the CRC checks).
int8_t decoderState=0, blockErrorState=0; //0 = Success, -1 = Decoding failed, 1 = Block Error.
uint16_t testLength, coderLength, blockErrorCumulative=0, bitErrorCumulative=0;
double timeEncoderCumulative = 0, timeDecoderCumulative = 0;
uint8_t decoderListSize = 8, pathMetricAppr = 0; //0 --> eq. (8a) and (11b), 1 --> eq. (9) and (12)
while ((arguments = getopt (argc, argv, "s:d:f:m:i:l:a:")) != -1)
switch (arguments)
{
case 's':
SNRstart = atof(optarg);
printf("SNRstart = %f\n", SNRstart);
break;
case 'd':
SNRinc = atof(optarg);
break;
case 'f':
SNRstop = atof(optarg);
break;
case 'm':
polarMessageType = atoi(optarg);
break;
case 'i':
iterations = atoi(optarg);
break;
case 'l':
decoderListSize = (uint8_t) atoi(optarg);
break;
case 'a':
pathMetricAppr = (uint8_t) atoi(optarg);
break;
default:
perror("[polartest.c] Problem at argument parsing with getopt");
abort ();
}
if (polarMessageType == 0) { //DCI
//testLength = ;
//coderLength = ;
} else if (polarMessageType == 1) { //PBCH
testLength = NR_POLAR_PBCH_PAYLOAD_BITS;
coderLength = NR_POLAR_PBCH_E;
} else if (polarMessageType == 2) { //UCI
//testLength = ;
//coderLength = ;
}
//Logging
time_t currentTime;
time (&currentTime);
char fileName[512], currentTimeInfo[25];
sprintf(fileName,"./polartestResults/_ListSize_%d_pmAppr_%d_Payload_%d_Itr_%d",decoderListSize,pathMetricAppr,testLength,iterations);
strftime(currentTimeInfo, 25, "_%Y-%m-%d-%H-%M-%S.csv", localtime(&currentTime));
strcat(fileName,currentTimeInfo);
//Create "./polartestResults" folder if it doesn't already exist.
struct stat folder = {0};
if (stat("./polartestResults", &folder) == -1) mkdir("./polartestResults", S_IRWXU | S_IRWXO);
FILE* logFile;
logFile = fopen(fileName, "w");
if (logFile==NULL) {
fprintf(stderr,"[polartest.c] Problem creating file %s with fopen\n",fileName);
exit(-1);
}
fprintf(logFile,",SNR,nBitError,blockErrorState,t_encoder[us],t_decoder[us]\n");
uint8_t *testInput = malloc(sizeof(uint8_t) * testLength); //generate randomly
uint8_t *encoderOutput = malloc(sizeof(uint8_t) * coderLength);
double *modulatedInput = malloc (sizeof(double) * coderLength); //channel input
double *channelOutput = malloc (sizeof(double) * coderLength); //add noise
uint8_t *estimatedOutput = malloc(sizeof(uint8_t) * testLength); //decoder output
t_nrPolar_params nrPolar_params;
nr_polar_init(&nrPolar_params, polarMessageType);
// We assume no a priori knowledge available about the payload.
double aPrioriArray[nrPolar_params.payloadBits];
for (int i=0; i<nrPolar_params.payloadBits; i++) aPrioriArray[i] = NAN;
for (SNR = SNRstart; SNR <= SNRstop; SNR += SNRinc) {
SNR_lin = pow(10, SNR/10);
for (itr = 1; itr <= iterations; itr++) {
for(int i=0; i<testLength; i++) testInput[i]=(uint8_t) (rand() % 2);
start_meas(&timeEncoder);
polar_encoder(testInput, encoderOutput, &nrPolar_params);
stop_meas(&timeEncoder);
//BPSK modulation
for(int i=0; i<coderLength; i++) {
if (encoderOutput[i] == 0)
modulatedInput[i]=1/sqrt(2);
else
modulatedInput[i]=(-1)/sqrt(2);
channelOutput[i] = modulatedInput[i] + (gaussdouble(0.0,1.0) * (1/sqrt(2*SNR_lin)));
}
start_meas(&timeDecoder);
decoderState = polar_decoder(channelOutput, estimatedOutput, &nrPolar_params, decoderListSize, aPrioriArray, pathMetricAppr);
stop_meas(&timeDecoder);
//calculate errors
if (decoderState==-1) {
blockErrorState=-1;
nBitError=-1;
} else {
for(int i=0; i<testLength; i++){
if (estimatedOutput[i]!=testInput[i]) nBitError++;
}
if (nBitError>0) blockErrorState=1;
}
//Iteration times are in microseconds.
timeEncoderCumulative+=(timeEncoder.diff_now/(cpu_freq_GHz*1000.0));
timeDecoderCumulative+=(timeDecoder.diff_now/(cpu_freq_GHz*1000.0));
fprintf(logFile,",%f,%d,%d,%f,%f\n", SNR, nBitError, blockErrorState,
(timeEncoder.diff_now/(cpu_freq_GHz*1000.0)), (timeDecoder.diff_now/(cpu_freq_GHz*1000.0)));
if (nBitError<0) {
blockErrorCumulative++;
bitErrorCumulative+=testLength;
} else {
blockErrorCumulative+=blockErrorState;
bitErrorCumulative+=nBitError;
}
decoderState=0;
nBitError=0;
blockErrorState=0;
}
//Calculate error statistics for the SNR.
printf("[ListSize=%d, Appr=%d] SNR=%+8.3f, BLER=%9.6f, BER=%12.9f, t_Encoder=%9.3fus, t_Decoder=%9.3fus\n",
decoderListSize, pathMetricAppr, SNR, ((double)blockErrorCumulative/iterations),
((double)bitErrorCumulative / (iterations*testLength)),
(timeEncoderCumulative/iterations),timeDecoderCumulative/iterations);
blockErrorCumulative = 0; bitErrorCumulative = 0;
timeEncoderCumulative = 0; timeDecoderCumulative = 0;
}
print_meas(&timeEncoder,"polar_encoder",NULL,NULL);
print_meas(&timeDecoder,"polar_decoder",NULL,NULL);
fclose(logFile);
free(testInput);
free(encoderOutput);
free(modulatedInput);
free(channelOutput);
free(estimatedOutput);
return (0);
}
openair1/PHY/CODING/nrPolar_init.c 0 → 100644
View file @ 5cf8d93a
#include "nrPolar_tools/nr_polar_defs.h"
#include "nrPolar_tools/nr_polar_pbch_defs.h"
void nr_polar_init(t_nrPolar_params* polarParams, int messageType) {
if (messageType == 0) { //DCI
} else if (messageType == 1) { //PBCH
polarParams->n_max = NR_POLAR_PBCH_N_MAX;
polarParams->i_il = NR_POLAR_PBCH_I_IL;
polarParams->n_pc = NR_POLAR_PBCH_N_PC;
polarParams->n_pc_wm = NR_POLAR_PBCH_N_PC_WM;
polarParams->i_bil = NR_POLAR_PBCH_I_BIL;
polarParams->payloadBits = NR_POLAR_PBCH_PAYLOAD_BITS;
polarParams->encoderLength = NR_POLAR_PBCH_E;
polarParams->crcParityBits = NR_POLAR_PBCH_CRC_PARITY_BITS;
polarParams->crcCorrectionBits = NR_POLAR_PBCH_CRC_ERROR_CORRECTION_BITS;
polarParams->K = polarParams->payloadBits + polarParams->crcParityBits; // Number of bits to encode.
polarParams->N = nr_polar_output_length(polarParams->K, polarParams->encoderLength, polarParams->n_max);
polarParams->n = log2(polarParams->N);
polarParams->crc_generator_matrix=crc24c_generator_matrix(polarParams->payloadBits);
polarParams->G_N = nr_polar_kronecker_power_matrices(polarParams->n);
} else if (messageType == 2) { //UCI
}
polarParams->Q_0_Nminus1 = nr_polar_sequence_pattern(polarParams->n);
polarParams->interleaving_pattern = (uint16_t *)malloc(sizeof(uint16_t) * polarParams->K);
nr_polar_interleaving_pattern(polarParams->K, polarParams->i_il, polarParams->interleaving_pattern);
polarParams->rate_matching_pattern = (uint16_t *)malloc(sizeof(uint16_t) * polarParams->encoderLength);
uint16_t *J = malloc(sizeof(uint16_t) * polarParams->N);
nr_polar_rate_matching_pattern(polarParams->rate_matching_pattern, J, nr_polar_subblock_interleaver_pattern,
polarParams->K, polarParams->N, polarParams->encoderLength);
polarParams->information_bit_pattern = malloc(sizeof(uint8_t) * polarParams->N);
polarParams->Q_I_N = malloc(sizeof(int16_t) * (polarParams->K + polarParams->n_pc));
polarParams->Q_F_N = malloc(sizeof(int16_t) * (polarParams->N+1)); // Last element shows the final array index assigned a value.
polarParams->Q_PC_N = malloc(sizeof(int16_t) * (polarParams->n_pc));
for (int i=0; i<=polarParams->N; i++) polarParams->Q_F_N[i] = -1; // Empty array.
nr_polar_info_bit_pattern(polarParams->information_bit_pattern,
polarParams->Q_I_N, polarParams->Q_F_N, J, polarParams->Q_0_Nminus1,
polarParams->K, polarParams->N, polarParams->encoderLength, polarParams->n_pc);
polarParams->channel_interleaver_pattern = malloc(sizeof(uint16_t) * polarParams->encoderLength);
nr_polar_channel_interleaver_pattern(polarParams->channel_interleaver_pattern,
polarParams->i_bil, polarParams->encoderLength);
free(J);
}
openair1/PHY/CODING/nrPolar_tools/get_3GPP_info_bit_pattern.c 0 → 100644
View file @ 5cf8d93a
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <stdint.h>
void get_3GPP_info_bit_pattern(uint16_t K, uint16_t n_PC, uint16_t Q_N_length, uint8_t E_r, uint8_t* P, uint16_t* Q_N, uint8_t** info_bit_pattern)
{
// GET_3GPP_INFO_BIT_PATTERN Obtain the 3GPP information bit pattern,
// according to Section 5.4.1.1 of 3GPP TS 38.212
//
// I should be an integer scalar. It specifies the number of bits in the
// information, CRC and PC bit sequence. It should be no greater than N or E.
//
// Q_N should be a row vector comprising N number of unique integers in the
// range 1 to N. Each successive element of Q_N provides the index of the
// next most reliable input to the polar encoder kernal, where the first
// element of Q_N gives the index of the least reliable bit and the last
// element gives the index of the most reliable bit.
//
// rate_matching_pattern should be a vector comprising E_r number of
// integers, each having a value in the range 1 to N. Each integer
// identifies which one of the N outputs from the polar encoder kernal
// provides the corresponding bit in the encoded bit sequence e.
//
// mode should have the value 'repetition', 'puncturing' or 'shortening'.
// This specifies how the rate matching has been achieved. 'repetition'
// indicates that some outputs of the polar encoder kernal are repeated in
// the encoded bit sequence two or more times. 'puncturing' and
// 'shortening' indicate that some outputs of the polar encoder kernal
// have been excluded from the encoded bit sequence. In the case of
// 'puncturing' these excluded bits could have values of 0 or 1. In the
// case of 'shortening' these excluded bits are guaranteed to have values
// of 0.
//
// info_bit_pattern will be a vector comprising N number of logical
// elements, each having the value true or false. The number of elements
// in info_bit_pattern having the value true will be I. These elements
// having the value true identify the positions of the information and
// CRC bits within the input to the polar encoder kernal. The
// information bit arrangement can be achieved according to
// u(info_bit_pattern) = a.
int I=K+n_PC;
if (I > Q_N_length) //I=K+n_PC
{
fprintf(stderr, "I=K+n_PC should be no greater than N.");
exit(-1);
}
if (I > E_r)
{
fprintf(stderr, "I=K+n_PC should be no greater than E.");
exit(-1);
}
//This is how the rate matching is described in TS 38.212
int J[Q_N_length];
int i,j;
for (j=0; j<Q_N_length; j++)
{
i=floor(32*(double)j/Q_N_length);
J[j] = P[i]*(Q_N_length/32)+(j%(Q_N_length/32));
}
//Q_Ftmp_N = [];
int Q_Ftmp_N_length= Q_N_length-E_r;
if (E_r < Q_N_length)
{
if ((double)(I)/E_r <= (double)7/16) // puncturing
{
//Q_Ftmp_N_length = Q_Ftmp_N_length + N-E;
if (E_r >= (double)3*Q_N_length/4)
{
//Q_Ftmp_N = [Q_Ftmp_N,0:ceil(3*N/4-E/2)-1];
Q_Ftmp_N_length = Q_Ftmp_N_length + ceil(3*Q_N_length/4-(double)E_r/2);
} else
{
//Q_Ftmp_N = [Q_Ftmp_N,0:ceil(9*N/16-E/4)-1];
Q_Ftmp_N_length = Q_Ftmp_N_length + ceil(9*Q_N_length/16-(double)E_r/4);
}
}
}
int* Q_Ftmp_N = (int *)malloc(sizeof(int)*Q_Ftmp_N_length);
if (Q_Ftmp_N == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
if (E_r < Q_N_length)
{
if ((double)I/E_r <= 7/16) // puncturing
{
for (j=0; j<Q_N_length-E_r; j++)
{
Q_Ftmp_N[j] = J[j];
}
if (E_r >= 3*Q_N_length/4)
{
for (j=0; j<ceil(3*Q_N_length/4-(double)E_r/2); j++)
{
Q_Ftmp_N[Q_N_length-E_r+1+j] = j;
}
} else
{
for (j=0; j<ceil(9*Q_N_length/16-(double)E_r/4); j++)
{
Q_Ftmp_N[Q_N_length-E_r+1+j] = j;
}
}
} else // shortening
{
for (j=E_r; j<Q_N_length; j++)
{
Q_Ftmp_N[j-E_r] = J[j];
}
}
}
//Q_Itmp_N = setdiff(Q_N-1,Q_Ftmp_N,'stable'); // -1 because TS 38.212 assumes that indices start at 0, not 1 like in Matlab
int Q_Itmp_N_length = Q_N_length;
int Q_Itmp_N_common[Q_N_length];
for(i=0; i<Q_N_length; i++)
{
Q_Itmp_N_common[i]=0; //1 if in common, otherwise 0
for (j=0; j<Q_Ftmp_N_length; j++)
{
if((int)Q_N[i]==Q_Ftmp_N[j])
{
Q_Itmp_N_common[i]=1;
Q_Itmp_N_length--;
break;
}
}
}
free(Q_Ftmp_N);
if (Q_Itmp_N_length < I)
{
fprintf(stderr, "Too many pre-frozen bits.");
exit(-1);
}
int* Q_Itmp_N = (int *)malloc(sizeof(int)*Q_Itmp_N_length);
if (Q_Itmp_N == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
j=0;
for(i=0; i<Q_N_length; i++)
{
if(!Q_Itmp_N_common[i]) //if not commonc
{
Q_Itmp_N[j]=(int)Q_N[i];
j++;
}
}
int* Q_I_N = (int *)malloc(sizeof(int)*(I));
if (Q_I_N == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
//Q_I_N=Q_Itmp_N(end-I+1:end);
for (j=Q_Itmp_N_length-(I); j<Q_Itmp_N_length; j++)
{
Q_I_N[j-(Q_Itmp_N_length-(I))]=Q_Itmp_N[j];
}
free(Q_Itmp_N);
//info_bit_pattern(Q_I_N+1) = true;
*info_bit_pattern = (uint8_t *)malloc(sizeof(uint8_t)*Q_N_length);
if (*info_bit_pattern == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
for(j=0; j<Q_N_length; j++)
{
(*info_bit_pattern)[j]=0;
for(i=0; i<I; i++)
{
if(Q_I_N[i]==j)
{
(*info_bit_pattern)[j]=1;
break;
}
}
}
free(Q_I_N);
}
openair1/PHY/CODING/nrPolar_tools/get_PC_bit_pattern.c 0 → 100644
View file @ 5cf8d93a
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <stdint.h>
void get_PC_bit_pattern(uint16_t Q_N_length, uint16_t n_PC, uint8_t n_PC_wm, uint16_t* Q_N, uint8_t* info_bit_pattern, uint8_t** PC_bit_pattern)
{
// GET_PC_BIT_PATTERN Obtain the Parity Check (PC) bit pattern,
// according to Section 5.3.1.2 of 3GPP TS 38.212
//
// info_bit_pattern should be a vector comprising N number of logical
// elements, each having the value true or false. The number of elements
// in info_bit_pattern having the value true should be I, where
// I = A+P+n_PC. These elements having the value true identify the
// positions of the information, CRC and PC bits within the input to the
// polar encoder kernal.
//
// Q_N should be a row vector comprising N number of unique integers in the
// range 1 to N. Each successive element of Q_N provides the index of the
// next most reliable input to the polar encoder kernal, where the first
// element of Q_N gives the index of the least reliable bit and the last
// element gives the index of the most reliable bit.
//
// n_PC should be an integer scalar. It specifies the number of PC bits to
// use, where n_PC should be no greater than I.
//
// n_PC_wm should be an integer scalar. It specifies the number of PC bits
// that occupy some of the most reliable positions at the input to the
// polar encoder kernal. The remaining n_PC-n_PC_wm PC bits occupy some of
// the least reliable positions at the input to the polar encoder kernal.
// n_PC_wm should be no greater than n_PC.
//
// PC_bit_pattern will be a vector comprising N number of logical
// elements, each having the value true or false. The number of elements
// in PC_bit_pattern having the value true will be n_PC.
// These elements having the value true identify the positions of the
// PC bits within the input to the polar encoder kernal.
//N = length(info_bit_pattern); -> Q_N_length
//I = sum(info_bit_pattern);
int totInfoBit =0;
int j,i;
for (j=0; j<Q_N_length; j++)
{
if(info_bit_pattern[j])
totInfoBit++;
}
if (n_PC > totInfoBit)
{
fprintf(stderr, "n_PC should be no greater than totInfoBit.");
exit(-1);
}
if (n_PC_wm > n_PC)
{
fprintf(stderr, "n_PC_wm should be no greater than n_PC.");
exit(-1);
}
//Q_I = 1:N;
int* Q_I = (int*) malloc(sizeof(int)*Q_N_length);
if (Q_I == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
for (j=0; j<Q_N_length; j++)
{
Q_I[j]=j+1;
}
//Q_N_I = intersect(Q_N, Q_I(info_bit_pattern), 'stable');
int Q_N_I_length=0;
int* Q_N_common = (int*) malloc(sizeof(int)*Q_N_length);
if (Q_N_common == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
for (j=0; j<Q_N_length; j++) //init
{
Q_N_common[j]=0;
}
for (j=0; j<Q_N_length; j++) //look in Q_I
{
if(info_bit_pattern[j])
{
//Q_I(info_bit_pattern)
for (i=0; i<Q_N_length; i++) //look in Q_N
{
if(Q_N[i]+1==Q_I[j])
{
Q_N_common[i]=1;
Q_N_I_length++;
break;
}
}
}
}
free(Q_I);
int* Q_N_I = (int*) malloc(sizeof(int)*Q_N_I_length);
if (Q_N_I == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
i=0;
for(j=0; j<Q_N_length; j++)
{
if(Q_N_common[j])
{
Q_N_I[i]=Q_N[j]+1;
i++;
}
}
free(Q_N_common);
//int G_N = get_G_N(N);
//int w_g = sum(G_N,2);
//useless, I do this
int* w_g = (int*) malloc(sizeof(int)*Q_N_length);
if (w_g == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
w_g[0]=1;
w_g[1]=2;
int counter=2;
int n = log2(Q_N_length);
for(i=0; i<n-1; i++) //n=log2(N)
{
for(j=0; j<counter; j++)
{
w_g[counter+j]=w_g[j]*2;
}
counter = counter*2;
}
//Q_tilde_N_I = Q_N_I(n_PC+1:end); % This is what it says in TS 38.212
int* Q_tilde_N_I = (int*) malloc(sizeof(int)*(Q_N_I_length-n_PC));
if (Q_tilde_N_I == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
int* Q_tilde_N_I_flip = (int*) malloc(sizeof(int)*(Q_N_I_length-n_PC));
if (Q_tilde_N_I_flip == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
for (i=0; i<Q_N_I_length-n_PC; i++)
{
Q_tilde_N_I[i]=Q_N_I[n_PC+i];
//Q_tilde_N_I_flip = fliplr(Q_tilde_N_I);
Q_tilde_N_I_flip[Q_N_I_length-n_PC-i-1] = Q_tilde_N_I[i];
}
//%Q_tilde_N_I = Q_N_I(n_PC-n_PC_wm+1:end); % I think that this would be slightly more elegant
//[w_g_sorted, indices] = sort(w_g(Q_tilde_N_I_flip));
int* w_g_sorted = (int*) malloc(sizeof(int)*(Q_N_I_length-n_PC));
if (w_g_sorted == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
int* indices = (int*) malloc(sizeof(int)*(Q_N_I_length-n_PC));
if (indices == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
for (i=0; i<Q_N_I_length-n_PC; i++)
{
w_g_sorted[i]=w_g[Q_tilde_N_I_flip[i]-1]; // w_g(Q_tilde_N_I_flip), yet to sort
indices[i] = i;
}
free(Q_tilde_N_I);
free(w_g);
//bubble sort
int tempToSwap=0;
for (i = 0; i < (Q_N_I_length-n_PC)-1; i++)
{
for (j = 0; j < (Q_N_I_length-n_PC)-i-1; j++)
{
if (w_g_sorted[j] > w_g_sorted[j+1]) //then swap
{
tempToSwap = w_g_sorted[j];
w_g_sorted[j] = w_g_sorted[j+1];
w_g_sorted[j+1] = tempToSwap;
tempToSwap = indices[j];
indices[j] = indices[j+1];
indices[j+1] = tempToSwap;
}
}
}
free(w_g_sorted);
//Q_N_PC = [Q_N_I(1:n_PC-n_PC_wm), Q_tilde_N_I_flip(indices(1:n_PC_wm))];
int* Q_N_PC = (int*) malloc(sizeof(int)*(n_PC));
if (Q_N_PC == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
for (i=0; i<n_PC-n_PC_wm; i++)
{
Q_N_PC[i]=Q_N_I[i]; //Q_N_PC = [Q_N_I(1:n_PC-n_PC_wm), ...
}
free(Q_N_I);
for (i=0; i<n_PC_wm; i++)
{
Q_N_PC[n_PC-n_PC_wm+i] = Q_tilde_N_I_flip[indices[i]];//... Q_tilde_N_I_flip(indices(1:n_PC_wm))];
}
free(Q_tilde_N_I_flip);
free(indices);
//PC_bit_pattern = false(1,N);
//PC_bit_pattern(Q_N_PC) = true;
*PC_bit_pattern = (uint8_t*) malloc(sizeof(uint8_t)*(Q_N_length));
if (*PC_bit_pattern == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
for (i=0; i<Q_N_length; i++)
{
(*PC_bit_pattern)[i]=0;
for (j=0; j<n_PC; j++)
{
if (Q_N_PC[j]-1==i)
{
(*PC_bit_pattern)[i]=1;
break;
}
}
}
//free(Q_I);
//free(Q_N_common);
//free(Q_N_I);
//free(w_g);
//free(Q_tilde_N_I);
//free(Q_tilde_N_I_flip);
//free(w_g_sorted);
//free(indices);
free(Q_N_PC);
}
openair1/PHY/CODING/nrPolar_tools/get_crc_generator_matrix.c 0 → 100644
View file @ 5cf8d93a
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <stdint.h>
void get_crc_generator_matrix(uint8_t A, uint8_t P, uint8_t* crc_polynomial_pattern, uint8_t*** G_P)
{
// GET_CRC_GENERATOR_MATRIX Obtain a Cyclic Redudancy Check (CRC) generator
// matrix.
//
// A should be an integer scalar. It specifies the number of bits in the
// information bit sequence.
//
// crc_polynomial_pattern should be a binary row vector comprising P+1
// number of bits, each having the value 0 or 1. These bits parameterise a
// Cyclic Redundancy Check (CRC) comprising P bits. Each bit provides the
// coefficient of the corresponding element in the CRC generator
// polynomial. From left to right, the bits provide the coefficients for
// the elements D^P, D^P-1, D^P-2, ..., D^2, D, 1.
//
// G_P will be a K by P binary matrix. The CRC bits can be generated
// according to mod(a*G_P,2).
*G_P = (uint8_t **)malloc(A * sizeof(uint8_t *));
if (*G_P == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
int i,j;
for (i=0; i<A; i++)
{
(*G_P)[i] = (uint8_t *)malloc(P * sizeof(uint8_t));
if ((*G_P)[i] == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
}
if(A>0)
{
//G_P(end,:) = crc_polynomial_pattern(2:end);
for(i=0; i<P; i++)
{
(*G_P)[A-1][i] = crc_polynomial_pattern[i+1];
}
//for k = A-1:-1:1
// G_P(k,:) = xor([G_P(k+1,2:end),0],G_P(k+1,1)*crc_polynomial_pattern(2:end));
//end
for(j=A-2; j>-1; j--)
{
for(i=0; i<P; i++)
{
(*G_P)[j][i]=0; //init with zeros
}
for(i=1; i<P; i++)
{
if( (*G_P)[j+1][i] != ( (*G_P)[j+1][0])*crc_polynomial_pattern[i]) //xor
(*G_P)[j][i-1]=1;
}
if(0 != ( (*G_P)[j+1][0])*crc_polynomial_pattern[P]) //xor
(*G_P)[j][P-1]=1;
}
}
printf("G_P=\n");
for(i=0; i<A; i++)
{
for(j=0; j<P; j++)
{
printf("%i ", (int)(*G_P)[i][j]);
}
printf("\n");
}
}
openair1/PHY/CODING/nrPolar_tools/main_pucch.c 0 → 100644
View file @ 5cf8d93a
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "nr_polar_defs.h"
#include "nr_polar_pucch_defs.h"
void PUCCH_encoder(uint8_t a[], uint8_t A, uint8_t G, uint16_t* E_r, uint8_t** f);
int main()
{
uint16_t E_r;
uint8_t* f;
uint8_t A=32; //16, 32, 64, 128, 256, 512, 1024 Payload length
uint8_t G = 54; //, 108, 216, 432, 864, 1728, 3456, 6912, 13824}; encoded block length
uint8_t j;
uint8_t* a = (uint8_t *)malloc(sizeof(uint8_t)*A);
if (a == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
printf("DEBUG: Send ");
for (j=0; j<A; j++) //create the message to encode
{
//a[j]=rand()%2;
a[j]=1; // ONLY ONES FOR TEST, otherwise random
printf("%i", a[j]);
}
printf("\n");
PUCCH_encoder(a, A, G, &E_r, &f);
return 0;
}
openair1/PHY/CODING/nrPolar_tools/nr_bitwise_operations.c 0 → 100644
View file @ 5cf8d93a
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
void nr_byte2bit(uint8_t *array, uint8_t arraySize, uint8_t *bitArray){//First 2 parameters are in bytes.
for (int i=0; i<arraySize; i++){
bitArray[(7+(i*8))] = ( array[i]>>0 & 0x01);
bitArray[(6+(i*8))] = ( array[i]>>1 & 0x01);
bitArray[(5+(i*8))] = ( array[i]>>2 & 0x01);
bitArray[(4+(i*8))] = ( array[i]>>3 & 0x01);
bitArray[(3+(i*8))] = ( array[i]>>4 & 0x01);
bitArray[(2+(i*8))] = ( array[i]>>5 & 0x01);
bitArray[(1+(i*8))] = ( array[i]>>6 & 0x01);
bitArray[ (i*8) ] = ( array[i]>>7 & 0x01);
}
}
openair1/PHY/CODING/nrPolar_tools/nr_crc_byte.c 0 → 100644
View file @ 5cf8d93a
This diff is collapsed.
openair1/PHY/CODING/nrPolar_tools/nr_polar_bit_insertion.c 0 → 100644
View file @ 5cf8d93a
#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,
uint16_t *Q_I_N, uint16_t *Q_PC_N, uint8_t n_PC){
uint16_t k=0;
uint8_t flag;
if (n_PC>0) {
/*
*
*/
} else {
for (int n=0; n<=N-1; n++) {
flag=0;
for (int m=0; m<=(K+n_PC)-1; m++) {
if ( n == Q_I_N[m]) {
flag=1;
break;
}
}
if (flag) { // n ϵ Q_I_N
output[n]=input[k];
k++;
} else {
output[n] = 0;
}
}
}
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_bit_insertion_2.c 0 → 100644
View file @ 5cf8d93a
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <stdint.h>
void nr_polar_bit_insertion_2(uint8_t* u, uint8_t* b, uint8_t* info_bit_pattern, uint8_t* PC_bit_pattern, uint16_t N)
{
int PC_circular_buffer_length=5;
int i, j;
int k=0;
int* y = (int*) malloc(sizeof(int)*PC_circular_buffer_length);
if (y == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
for(i=0; i<PC_circular_buffer_length; i++)
{
y[i]=0;
}
int tempToShift;
//for n=0:N-1
printf("u = ");
for(i=0; i<N; i++)
{
//y = [y(2:end),y(1)];
tempToShift=y[0];
for (j=0; j<PC_circular_buffer_length-1; j++)
{
y[j]=y[j+1];
}
y[PC_circular_buffer_length-1]=tempToShift;
//if info_bit_pattern(n+1)
// if PC_bit_pattern(n+1)
// u(n+1) = y(1);
// else
// u(n+1) = b(k+1);
// k=k+1;
// y(1) = xor(y(1),u(n+1));
if (info_bit_pattern[i])
{
if (PC_bit_pattern[i])
{
u[i] = y[1];
} else
{
u[i] = b[k];
k++;
y[1] = ( y[1]!=u[i]);
}
} else
{
u[i]=0;
}
printf("%i ", u[i]);
}
free(y);
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_channel_interleaver_pattern.c 0 → 100644
View file @ 5cf8d93a
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
void nr_polar_channel_interleaver_pattern(uint16_t *cip, uint8_t I_BIL, uint16_t E){
if (I_BIL == 1) {
uint16_t T=0, k;
while( ((T/2)*(T+1)) < E ) T++;
int16_t **v = malloc(T * sizeof(*v));
for (int i = 0; i <= T-1; i++) v[i] = malloc((T-i) * sizeof(*(v[i])));
k=0;
for (int i = 0; i <= T-1; i++) {
for (int j = 0; j <= (T-1)-i; j++) {
if (k<E) {
v[i][j] = k;
} else {
v[i][j] = (-1);
}
k++;
}
}
k=0;
for (int j = 0; j <= T-1; j++) {
for (int i = 0; i <= (T-1)-j; i++) {
if ( v[i][j] != (-1) ) {
cip[k]=v[i][j];
k++;
}
}
}
for (int i = 0; i <= T-1; i++) free(v[i]);
free(v);
} else {
for (int i=0; i<=E-1; i++) cip[i]=i;
}
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_crc.c 0 → 100644
View file @ 5cf8d93a
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <stdint.h>
void nr_polar_crc(uint8_t* a, uint8_t A, uint8_t P, uint8_t** G_P, uint8_t** b)
{
int i, j;
int* temp_b = (int*) malloc(sizeof(int)*P);
if (temp_b == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
printf("temp = ");
for(i=0; i<P; i++)
{
temp_b[i]=0;
for(j=0; j<A; j++)
{
temp_b[i]=temp_b[i] + a[j]*G_P[j][i];
}
temp_b[i]=temp_b[i]%2;
printf("%i ", temp_b[i]);
}
*b = (uint8_t*) malloc(sizeof(uint8_t)*(A+P));
if (*b == NULL)
{
fprintf(stderr, "malloc failed\n");
exit(-1);
}
printf("\nb = ");
for(i=0; i<A; i++)
{
(*b)[i]=a[i];
printf("%i", (*b)[i]);
}
for(i=A; i<A+P; i++)
{
(*b)[i]=temp_b[i-A];
printf("%i", (*b)[i]);
}
free(temp_b);
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoder.c 0 → 100644
View file @ 5cf8d93a
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
#include "PHY/CODING/nrPolar_tools/nr_polar_pbch_defs.h"
/*
* Return values:
* 0 --> Success
* -1 --> All list entries have failed the CRC checks
*/
int8_t polar_decoder(double *input, uint8_t *output, t_nrPolar_params *polarParams, uint8_t listSize,
double *aPrioriPayload, uint8_t pathMetricAppr){
uint8_t ***bit = nr_alloc_uint8_t_3D_array(polarParams->N, (polarParams->n+1), 2*listSize);
uint8_t **bitUpdated = nr_alloc_uint8_t_2D_array(polarParams->N, (polarParams->n+1)); //0=False, 1=True
uint8_t **llrUpdated = nr_alloc_uint8_t_2D_array(polarParams->N, (polarParams->n+1)); //0=False, 1=True
double ***llr = nr_alloc_double_3D_array(polarParams->N, (polarParams->n+1), 2*listSize);
uint8_t **crcChecksum = nr_alloc_uint8_t_2D_array(polarParams->crcParityBits, 2*listSize);
double *pathMetric = malloc(sizeof(double)*(2*listSize));
uint8_t *crcState = malloc(sizeof(uint8_t)*(2*listSize)); //0=False, 1=True
for (int i=0; i<(2*listSize); i++) {
pathMetric[i] = 0;
crcState[i]=1;
}
for (int i=0; i<polarParams->N; i++) {
llrUpdated[i][polarParams->n]=1;
bitUpdated[i][0]=((polarParams->information_bit_pattern[i]+1) % 2);
}
uint8_t **crc_generator_matrix=crc24c_generator_matrix(polarParams->payloadBits); //G_P
uint8_t **extended_crc_generator_matrix = malloc(polarParams->K * sizeof(uint8_t *)); //G_P3
uint8_t **tempECGM = malloc(polarParams->K * sizeof(uint8_t *)); //G_P2
for (int i = 0; i < polarParams->K; i++){
extended_crc_generator_matrix[i] = malloc(polarParams->crcParityBits * sizeof(uint8_t));
tempECGM[i] = malloc(polarParams->crcParityBits * sizeof(uint8_t));
}
for (int i=0; i<polarParams->payloadBits; i++) {
for (int j=0; j<polarParams->crcParityBits; j++) {
tempECGM[i][j]=crc_generator_matrix[i][j];
}
}
for (int i=polarParams->payloadBits; i<polarParams->K; i++) {
for (int j=0; j<polarParams->crcParityBits; j++) {
if( (i-polarParams->payloadBits) == j ){
tempECGM[i][j]=1;
} else {
tempECGM[i][j]=0;
}
}
}
for (int i=0; i<polarParams->K; i++) {
for (int j=0; j<polarParams->crcParityBits; j++) {
extended_crc_generator_matrix[i][j]=tempECGM[polarParams->interleaving_pattern[i]][j];
}
}
//The index of the last 1-valued bit that appears in each column.
uint16_t last1ind[polarParams->crcParityBits];
for (int j=0; j<polarParams->crcParityBits; j++) {
for (int i=0; i<polarParams->K; i++) {
if (extended_crc_generator_matrix[i][j]==1) last1ind[j]=i;
}
}
double *d_tilde = malloc(sizeof(double) * polarParams->N);
nr_polar_rate_matching(input, d_tilde, polarParams->rate_matching_pattern, polarParams->K, polarParams->N, polarParams->encoderLength);
for (int j = 0; j < polarParams->N; j++) llr[j][polarParams->n][0]=d_tilde[j];
/*
* SCL polar decoder.
*/
uint32_t nonFrozenBit=0;
uint8_t currentListSize=1;
uint8_t decoderIterationCheck=0;
int16_t checkCrcBits=-1;
uint8_t listIndex[2*listSize], copyIndex;
for (uint16_t currentBit=0; currentBit<polarParams->N; currentBit++){
updateLLR(llr, llrUpdated, bit, bitUpdated, currentListSize, currentBit, 0, polarParams->N, (polarParams->n+1), pathMetricAppr);
if (polarParams->information_bit_pattern[currentBit]==0) { //Frozen bit.
updatePathMetric(pathMetric, llr, currentListSize, 0, currentBit, pathMetricAppr); //approximation=0 --> 11b, approximation=1 --> 12
} else { //Information or CRC bit.
if ( (polarParams->interleaving_pattern[nonFrozenBit] <= polarParams->payloadBits) && (aPrioriPayload[polarParams->interleaving_pattern[nonFrozenBit]] == 0) ) {
//Information bit with known value of "0".
updatePathMetric(pathMetric, llr, currentListSize, 0, currentBit, pathMetricAppr);
bitUpdated[currentBit][0]=1; //0=False, 1=True
} else if ( (polarParams->interleaving_pattern[nonFrozenBit] <= polarParams->payloadBits) && (aPrioriPayload[polarParams->interleaving_pattern[nonFrozenBit]] == 1) ) {
//Information bit with known value of "1".
updatePathMetric(pathMetric, llr, currentListSize, 1, currentBit, pathMetricAppr);
for (uint8_t i=0; i<currentListSize; i++) bit[currentBit][0][i]=1;
bitUpdated[currentBit][0]=1;
updateCrcChecksum(crcChecksum, extended_crc_generator_matrix, currentListSize, nonFrozenBit, polarParams->crcParityBits);
} else {
updatePathMetric2(pathMetric, llr, currentListSize, currentBit, pathMetricAppr);
for (int i = 0; i < currentListSize; i++) {
for (int j = 0; j < polarParams->N; j++) {
for (int k = 0; k < (polarParams->n+1); k++) {
bit[j][k][i+currentListSize]=bit[j][k][i];
llr[j][k][i+currentListSize]=llr[j][k][i];}}}
for (int i = 0; i < currentListSize; i++) {
bit[currentBit][0][i]=0;
crcState[i+currentListSize]=crcState[i];
}
for (int i = currentListSize; i < 2*currentListSize; i++) bit[currentBit][0][i]=1;
bitUpdated[currentBit][0]=1;
updateCrcChecksum2(crcChecksum, extended_crc_generator_matrix, currentListSize, nonFrozenBit, polarParams->crcParityBits);
currentListSize*=2;
//Keep only the best "listSize" number of entries.
if (currentListSize > listSize) {
for (uint8_t i = 0; i < 2*listSize; i++) listIndex[i]=i;
nr_sort_asc_double_1D_array_ind(pathMetric, listIndex, currentListSize);
//sort listIndex[listSize, ..., 2*listSize-1] in descending order.
uint8_t swaps, tempInd;
for (uint8_t i = 0; i < listSize; i++) {
swaps = 0;
for (uint8_t j = listSize; j < (2*listSize - i) - 1; j++) {
if (listIndex[j+1] > listIndex[j]) {
tempInd = listIndex[j];
listIndex[j] = listIndex[j + 1];
listIndex[j + 1] = tempInd;
swaps++;
}
}
if (swaps == 0)
break;
}
//First, backup the best "listSize" number of entries.
for (int k=(listSize-1); k>0; k--) {
for (int i=0; i<polarParams->N; i++) {
for (int j=0; j<(polarParams->n+1); j++) {
bit[i][j][listIndex[(2*listSize-1)-k]]=bit[i][j][listIndex[k]];
llr[i][j][listIndex[(2*listSize-1)-k]]=llr[i][j][listIndex[k]];
}
}
}
for (int k=(listSize-1); k>0; k--) {
for (int i = 0; i < polarParams->crcParityBits; i++) {
crcChecksum[i][listIndex[(2*listSize-1)-k]] = crcChecksum[i][listIndex[k]];
}
}
for (int k=(listSize-1); k>0; k--) crcState[listIndex[(2*listSize-1)-k]]=crcState[listIndex[k]];
//Copy the best "listSize" number of entries to the first indices.
for (int k = 0; k < listSize; k++) {
if (k > listIndex[k]) {
copyIndex = listIndex[(2*listSize-1)-k];
} else { //Use the backup.
copyIndex = listIndex[k];
}
for (int i = 0; i < polarParams->N; i++) {
for (int j = 0; j < (polarParams->n + 1); j++) {
bit[i][j][k] = bit[i][j][copyIndex];
llr[i][j][k] = llr[i][j][copyIndex];
}
}
}
for (int k = 0; k < listSize; k++) {
if (k > listIndex[k]) {
copyIndex = listIndex[(2*listSize-1)-k];
} else { //Use the backup.
copyIndex = listIndex[k];
}
for (int i = 0; i < polarParams->crcParityBits; i++) {
crcChecksum[i][k]=crcChecksum[i][copyIndex];
}
}
for (int k = 0; k < listSize; k++) {
if (k > listIndex[k]) {
copyIndex = listIndex[(2*listSize-1)-k];
} else { //Use the backup.
copyIndex = listIndex[k];
}
crcState[k]=crcState[copyIndex];
}
currentListSize = listSize;
}
}
for (int i=0; i<polarParams->crcParityBits; i++) {
if (last1ind[i]==nonFrozenBit) {
checkCrcBits=i;
break;
}
}
if ( checkCrcBits > (-1) ) {
for (uint8_t i = 0; i < currentListSize; i++) {
if (crcChecksum[checkCrcBits][i]==1) {
crcState[i]=0; //0=False, 1=True
}
}
}
for (uint8_t i = 0; i < currentListSize; i++) decoderIterationCheck+=crcState[i];
if (decoderIterationCheck==0) {
//perror("[SCL polar decoder] All list entries have failed the CRC checks.");
free(crc_generator_matrix);
free(d_tilde);
free(pathMetric);
nr_free_uint8_t_3D_array(bit, polarParams->N, (polarParams->n+1));
nr_free_double_3D_array(llr, polarParams->N, (polarParams->n+1));
nr_free_uint8_t_2D_array(crcChecksum, polarParams->crcParityBits);
return(-1);
}
nonFrozenBit++;
decoderIterationCheck=0;
checkCrcBits=-1;
}
}
for (uint8_t i = 0; i < 2*listSize; i++) listIndex[i]=i;
nr_sort_asc_double_1D_array_ind(pathMetric, listIndex, currentListSize);
uint8_t *nr_polar_uHat = malloc(sizeof(uint8_t) * polarParams->N);
uint8_t *nr_polar_cHat = malloc(sizeof(uint8_t) * polarParams->K);
uint8_t *nr_polar_bHat = malloc(sizeof(uint8_t) * polarParams->K);
for (uint8_t i = 0; i < fmin(listSize, (pow(2,polarParams->crcCorrectionBits)) ); i++) {
if ( crcState[listIndex[i]] == 1 ) {
for (int j = 0; j < polarParams->N; j++) nr_polar_uHat[j]=bit[j][0][listIndex[i]];
//Extract the information bits (û to ĉ)
nr_polar_info_bit_extraction(nr_polar_uHat, nr_polar_cHat, polarParams->information_bit_pattern, polarParams->N);
//Deinterleaving (ĉ to b)
nr_polar_deinterleaver(nr_polar_cHat, nr_polar_bHat, polarParams->interleaving_pattern, polarParams->K);
//Remove the CRC (â)
for (int j = 0; j < polarParams->payloadBits; j++) output[j]=nr_polar_bHat[j];
break;
}
}
free(crc_generator_matrix);
free(d_tilde);
free(pathMetric);
free(nr_polar_uHat);
free(nr_polar_cHat);
free(nr_polar_bHat);
nr_free_uint8_t_3D_array(bit, polarParams->N, (polarParams->n+1));
nr_free_double_3D_array(llr, polarParams->N, (polarParams->n+1));
nr_free_uint8_t_2D_array(crcChecksum, polarParams->crcParityBits);
return(0);
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_decoding_tools.c 0 → 100644
View file @ 5cf8d93a
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
void updateLLR(double ***llr, uint8_t **llrU, uint8_t ***bit, uint8_t **bitU,
uint8_t listSize, uint16_t row, uint16_t col, uint16_t xlen, uint8_t ylen, uint8_t approximation) {
uint16_t offset = (xlen/(pow(2,(ylen-col-1))));
for (uint8_t i=0; i<listSize; i++) {
if (( (row) % (2*offset) ) >= offset ) {
if(bitU[row-offset][col]==0) updateBit(bit, bitU, listSize, (row-offset), col, xlen, ylen);
if(llrU[row-offset][col+1]==0) updateLLR(llr, llrU, bit, bitU, listSize, (row-offset), (col+1), xlen, ylen, approximation);
if(llrU[row][col+1]==0) updateLLR(llr, llrU, bit, bitU, listSize, row, (col+1), xlen, ylen, approximation);
llr[row][col][i] = (pow((-1),bit[row-offset][col][i])*llr[row-offset][col+1][i]) + llr[row][col+1][i];
} else {
if(llrU[row][col+1]==0) updateLLR(llr, llrU, bit, bitU, listSize, row, (col+1), xlen, ylen, approximation);
if(llrU[row+offset][col+1]==0) updateLLR(llr, llrU, bit, bitU, listSize, (row+offset), (col+1), xlen, ylen, approximation);
computeLLR(llr, row, col, i, offset, approximation);
}
}
llrU[row][col]=1;
}
void updateBit(uint8_t ***bit, uint8_t **bitU, uint8_t listSize, uint16_t row,
uint16_t col, uint16_t xlen, uint8_t ylen) {
uint16_t offset = ( xlen/(pow(2,(ylen-col))) );
for (uint8_t i=0; i<listSize; i++) {
if (( (row) % (2*offset) ) >= offset ) {
if (bitU[row][col-1]==0) updateBit(bit, bitU, listSize, row, (col-1), xlen, ylen);
bit[row][col][i] = bit[row][col-1][i];
} else {
if (bitU[row][col-1]==0) updateBit(bit, bitU, listSize, row, (col-1), xlen, ylen);
if (bitU[row+offset][col-1]==0) updateBit(bit, bitU, listSize, (row+offset), (col-1), xlen, ylen);
bit[row][col][i] = ( (bit[row][col-1][i]+bit[row+offset][col-1][i]) % 2);
}
}
bitU[row][col]=1;
}
void updatePathMetric(double *pathMetric, double ***llr, uint8_t listSize, uint8_t bitValue,
uint16_t row, uint8_t approximation) {
if (approximation) { //eq. (12)
for (uint8_t i=0; i<listSize; i++) {
if ((2*bitValue) != ( 1 - copysign(1.0,llr[row][0][i]) )) pathMetric[i] += fabs(llr[row][0][i]);
}
} else { //eq. (11b)
int8_t multiplier = (2*bitValue) - 1;
for (uint8_t i=0; i<listSize; i++) pathMetric[i] += log ( 1 + exp(multiplier*llr[row][0][i]) ) ;
}
}
void updatePathMetric2(double *pathMetric, double ***llr, uint8_t listSize, uint16_t row, uint8_t appr) {
double *tempPM = malloc(sizeof(double) * listSize);
for (int i=0; i < listSize; i++) tempPM[i]=pathMetric[i];
uint8_t bitValue = 0;
if (appr) { //eq. (12)
for (uint8_t i = 0; i < listSize; i++) {
if ((2 * bitValue) != (1 - copysign(1.0, llr[row][0][i]))) pathMetric[i] += fabs(llr[row][0][i]);
}
} else { //eq. (11b)
int8_t multiplier = (2 * bitValue) - 1;
for (uint8_t i = 0; i < listSize; i++) pathMetric[i] += log(1 + exp(multiplier * llr[row][0][i]));
}
bitValue = 1;
if (appr) { //eq. (12)
for (uint8_t i = listSize; i < 2*listSize; i++) {
if ((2 * bitValue) != (1 - copysign(1.0, llr[row][0][(i-listSize)]))) pathMetric[i] = tempPM[(i-listSize)] + fabs(llr[row][0][(i-listSize)]);
}
} else { //eq. (11b)
int8_t multiplier = (2 * bitValue) - 1;
for (uint8_t i = listSize; i < 2*listSize; i++) pathMetric[i] = tempPM[(i-listSize)] + log(1 + exp(multiplier * llr[row][0][(i-listSize)]));
}
free(tempPM);
}
void computeLLR(double ***llr, uint16_t row, uint16_t col, uint8_t i,
uint16_t offset, uint8_t approximation) {
double a = llr[row][col + 1][i];
double absA = fabs(a);
double b = llr[row + offset][col + 1][i];
double absB = fabs(b);
if (approximation || isinf(absA) || isinf(absB)) { //eq. (9)
llr[row][col][i] = copysign(1.0, a) * copysign(1.0, b) * fmin(absA, absB);
} else { //eq. (8a)
llr[row][col][i] = log((exp(a + b) + 1) / (exp(a) + exp(b)));
}
}
void updateCrcChecksum(uint8_t **crcChecksum, uint8_t **crcGen,
uint8_t listSize, uint32_t i2, uint8_t len) {
for (uint8_t i = 0; i < listSize; i++) {
for (uint8_t j = 0; j < len; j++) {
crcChecksum[j][i] = ( (crcChecksum[j][i] + crcGen[i2][j]) % 2 );
}
}
}
void updateCrcChecksum2(uint8_t **crcChecksum, uint8_t **crcGen,
uint8_t listSize, uint32_t i2, uint8_t len) {
for (uint8_t i = 0; i < listSize; i++) {
for (uint8_t j = 0; j < len; j++) {
crcChecksum[j][i+listSize] = ( (crcChecksum[j][i] + crcGen[i2][j]) % 2 );
}
}
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_defs.h 0 → 100644
View file @ 5cf8d93a
#ifndef __NR_POLAR_DEFS__H__
#define __NR_POLAR_DEFS__H__
#include <math.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
static const uint8_t nr_polar_subblock_interleaver_pattern[32] = { 0, 1, 2, 4, 3, 5, 6, 7, 8, 16, 9, 17, 10, 18, 11, 19, 12, 20, 13, 21, 14, 22, 15, 23, 24, 25, 26, 28, 27, 29, 30, 31 };
typedef struct nrPolar_params {
uint8_t n_max;
uint8_t i_il;
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;
uint16_t *interleaving_pattern;
uint16_t *rate_matching_pattern;
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;
uint8_t **crc_generator_matrix; //G_P
uint8_t **G_N;
} t_nrPolar_params;
void polar_encoder(uint8_t *input, uint8_t *channel_input, t_nrPolar_params* polarParams);
int8_t polar_decoder(double *input, uint8_t *output, t_nrPolar_params *polarParams,
uint8_t listSize, double *aPrioriPayload, uint8_t pathMetricAppr);
void nr_polar_init(t_nrPolar_params* polarParams, int messageType);
uint8_t** nr_polar_kronecker_power_matrices(uint8_t n);
uint16_t* nr_polar_sequence_pattern(uint8_t n);
uint32_t nr_polar_output_length(uint16_t K, uint16_t E, uint8_t n_max);
void nr_polar_channel_interleaver_pattern(uint16_t *cip, uint8_t I_BIL,
uint16_t E);
void nr_polar_rate_matching_pattern(uint16_t *rmp, uint16_t *J, uint8_t *P_i_,
uint16_t K, uint16_t N, uint16_t E);
void nr_polar_rate_matching(double *input, double *output, uint16_t *rmp,
uint16_t K, uint16_t N, uint16_t E);
void nr_polar_rate_matcher(uint8_t *input, unsigned char *output, uint16_t *pattern, uint16_t size);
void nr_polar_interleaving_pattern(uint16_t K, uint8_t I_IL, uint16_t *PI_k_);
void nr_polar_interleaver(uint8_t *input, uint8_t *output, uint16_t *pattern,
uint16_t size);
void nr_polar_deinterleaver(uint8_t *input, uint8_t *output, uint16_t *pattern,
uint16_t size);
void nr_polar_info_bit_pattern(uint8_t *ibp, uint16_t *Q_I_N, int16_t *Q_F_N,
uint16_t *J, uint16_t *Q_0_Nminus1, uint16_t K, uint16_t N, uint16_t E,
uint8_t n_PC);
void nr_polar_info_bit_extraction(uint8_t *input, uint8_t *output,
uint8_t *pattern, uint16_t size);
void nr_byte2bit(uint8_t *array, uint8_t arraySize, uint8_t *bitArray);
void nr_polar_bit_insertion(uint8_t *input, uint8_t *output, uint16_t N,
uint16_t K, uint16_t *Q_I_N, uint16_t *Q_PC_N, uint8_t n_PC);
void nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(uint8_t *matrix1, uint8_t **matrix2,
uint8_t *output, uint16_t row, uint16_t col);
uint8_t ***nr_alloc_uint8_t_3D_array(uint16_t xlen, uint16_t ylen,
uint16_t zlen);
uint8_t **nr_alloc_uint8_t_2D_array(uint16_t xlen, uint16_t ylen);
double ***nr_alloc_double_3D_array(uint16_t xlen, uint16_t ylen, uint16_t zlen);
void nr_free_uint8_t_3D_array(uint8_t ***input, uint16_t xlen, uint16_t ylen);
void nr_free_uint8_t_2D_array(uint8_t **input, uint16_t xlen);
void nr_free_double_3D_array(double ***input, uint16_t xlen, uint16_t ylen);
void updateLLR(double ***llr, uint8_t **llrU, uint8_t ***bit, uint8_t **bitU,
uint8_t listSize, uint16_t row, uint16_t col, uint16_t xlen,
uint8_t ylen, uint8_t approximation);
void updateBit(uint8_t ***bit, uint8_t **bitU, uint8_t listSize, uint16_t row,
uint16_t col, uint16_t xlen, uint8_t ylen);
void updatePathMetric(double *pathMetric, double ***llr, uint8_t listSize,
uint8_t bitValue, uint16_t row, uint8_t approximation);
void updatePathMetric2(double *pathMetric, double ***llr, uint8_t listSize,
uint16_t row, uint8_t approximation);
void computeLLR(double ***llr, uint16_t row, uint16_t col, uint8_t i,
uint16_t offset, uint8_t approximation);
void updateCrcChecksum(uint8_t **crcChecksum, uint8_t **crcGen,
uint8_t listSize, uint32_t i2, uint8_t len);
void updateCrcChecksum2(uint8_t **crcChecksum, uint8_t **crcGen,
uint8_t listSize, uint32_t i2, uint8_t len);
void nr_sort_asc_double_1D_array_ind(double *matrix, uint8_t *ind, uint8_t len);
#endif
openair1/PHY/CODING/nrPolar_tools/nr_polar_encoder.c 0 → 100644
View file @ 5cf8d93a
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
#include "PHY/CODING/nrPolar_tools/nr_polar_pbch_defs.h"
void polar_encoder(uint8_t *input, uint8_t *channel_input, t_nrPolar_params *polarParams){
/*//Create the Transport Block.
unsigned int payload=0xb3f02c82;
uint8_t pbchTransportBlockSize = ( polarParams->K / (8*sizeof(uint8_t)) );
uint8_t *pbchTransportBlock = malloc(pbchTransportBlockSize);
memcpy(pbchTransportBlock,&payload,sizeof(payload));
//Attach CRC to the Transport Block. (a to b)
uint32_t crc = crc24c(&payload, NR_POLAR_PBCH_PAYLOAD_BITS)>>8;
pbchTransportBlock[NR_POLAR_PBCH_PAYLOAD_BITS>>3] = ((uint8_t*)&crc)[2];
pbchTransportBlock[1+(NR_POLAR_PBCH_PAYLOAD_BITS>>3)] = ((uint8_t*)&crc)[1];
pbchTransportBlock[2+(NR_POLAR_PBCH_PAYLOAD_BITS>>3)] = ((uint8_t*)&crc)[0];*/
/*
* Bytewise operations
*/
//Calculate CRC.
uint8_t *nr_polar_crc = malloc(sizeof(uint8_t) * polarParams->crcParityBits);
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(input, polarParams->crc_generator_matrix,
nr_polar_crc, polarParams->payloadBits, polarParams->crcParityBits);
for (uint8_t i = 0; i < polarParams->crcParityBits; i++) nr_polar_crc[i] = (nr_polar_crc[i] % 2);
//Attach CRC to the Transport Block. (a to b)
uint8_t *nr_polar_b = malloc(sizeof(uint8_t) * polarParams->K);
for (uint16_t i = 0; i < polarParams->payloadBits; i++) nr_polar_b[i] = input[i];
for (uint16_t i = polarParams->payloadBits; i < polarParams->K; i++) nr_polar_b[i]= nr_polar_crc[i-(polarParams->payloadBits)];
//Interleaving (c to c')
uint8_t *nr_polar_cPrime = malloc(sizeof(uint8_t) * polarParams->K);
nr_polar_interleaver(nr_polar_b, nr_polar_cPrime, polarParams->interleaving_pattern, polarParams->K);
//Bit insertion (c' to u)
uint8_t *nr_polar_u = malloc(sizeof(uint8_t) * polarParams->N);
nr_polar_bit_insertion(nr_polar_cPrime, nr_polar_u, polarParams->N, polarParams->K,
polarParams->Q_I_N, polarParams->Q_PC_N, polarParams->n_pc);
//Encoding (u to d)
uint8_t *pbch_polar_encoder_output = malloc(sizeof(uint8_t) * polarParams->N);
nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(nr_polar_u, polarParams->G_N, pbch_polar_encoder_output, polarParams->N, polarParams->N);
for (uint16_t i = 0; i < polarParams->N; i++) pbch_polar_encoder_output[i] = (pbch_polar_encoder_output[i] % 2);
//Rate matching
//Sub-block interleaving (d to y) and Bit selection (y to e)
nr_polar_rate_matcher(pbch_polar_encoder_output, channel_input, polarParams->rate_matching_pattern, polarParams->encoderLength);
//free(pbchTransportBlock);
free(nr_polar_crc);
free(nr_polar_b);
free(nr_polar_cPrime);
free(nr_polar_u);
free(pbch_polar_encoder_output);
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_info_bit_pattern.c 0 → 100644
View file @ 5cf8d93a
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
void nr_polar_info_bit_pattern(uint8_t *ibp, uint16_t *Q_I_N, int16_t *Q_F_N,
uint16_t *J, uint16_t *Q_0_Nminus1, uint16_t K, uint16_t N, uint16_t E,
uint8_t n_PC) {
int16_t *Q_Ftmp_N = malloc(sizeof(int16_t) * (N + 1)); // Last element shows the final
int16_t *Q_Itmp_N = malloc(sizeof(int16_t) * (N + 1)); // array index assigned a value.
for (int i = 0; i <= N; i++) {
Q_Ftmp_N[i] = -1; // Empty array.
Q_Itmp_N[i] = -1;
}
uint8_t flag;
uint16_t limit, ind;
if (E < N) {
if ((K / (double) E) <= (7.0 / 16)) { //puncturing
for (int n = 0; n <= N - E - 1; n++) {
ind = Q_Ftmp_N[N] + 1;
Q_Ftmp_N[ind] = J[n];
Q_Ftmp_N[N] = Q_Ftmp_N[N] + 1;
}
if ((E / (double) N) >= (3.0 / 4)) {
limit = ceil((double) (3 * N - 2 * E) / 4);
for (int n = 0; n <= limit - 1; n++) {
ind = Q_Ftmp_N[N] + 1;
Q_Ftmp_N[ind] = n;
Q_Ftmp_N[N] = Q_Ftmp_N[N] + 1;
}
} else {
limit = ceil((double) (9 * N - 4 * E) / 16);
for (int n = 0; n <= limit - 1; n++) {
ind = Q_Ftmp_N[N] + 1;
Q_Ftmp_N[ind] = n;
Q_Ftmp_N[N] = Q_Ftmp_N[N] + 1;
}
}
} else { //shortening
for (int n = E; n <= N - 1; n++) {
ind = Q_Ftmp_N[N] + 1;
Q_Ftmp_N[ind] = J[n];
Q_Ftmp_N[N] = Q_Ftmp_N[N] + 1;
}
}
}
//Q_I,tmp_N = Q_0_N-1 \ Q_F,tmp_N
for (int n = 0; n <= N - 1; n++) {
flag = 1;
for (int m = 0; m <= Q_Ftmp_N[N]; m++) {
if (Q_0_Nminus1[n] == Q_Ftmp_N[m]) {
flag = 0;
break;
}
}
if (flag) {
Q_Itmp_N[Q_Itmp_N[N] + 1] = Q_0_Nminus1[n];
Q_Itmp_N[N]++;
}
}
//Q_I_N comprises (K+n_PC) most reliable bit indices in Q_I,tmp_N
for (int n = 0; n <= (K + n_PC) - 1; n++) {
ind = Q_Itmp_N[N] + n - ((K + n_PC) - 1);
Q_I_N[n] = Q_Itmp_N[ind];
}
//Q_F_N = Q_0_N-1 \ Q_I_N
for (int n = 0; n <= N - 1; n++) {
flag = 1;
for (int m = 0; m <= (K + n_PC) - 1; m++) {
if (Q_0_Nminus1[n] == Q_I_N[m]) {
flag = 0;
break;
}
}
if (flag) {
Q_F_N[Q_F_N[N] + 1] = Q_0_Nminus1[n];
Q_F_N[N]++;
}
}
//Information Bit Pattern
for (int n = 0; n <= N - 1; n++) {
ibp[n] = 0;
for (int m = 0; m <= (K + n_PC) - 1; m++) {
if (n == Q_I_N[m]) {
ibp[n] = 1;
break;
}
}
}
free(Q_Ftmp_N);
free(Q_Itmp_N);
}
void nr_polar_info_bit_extraction(uint8_t *input, uint8_t *output, uint8_t *pattern, uint16_t size) {
uint16_t j = 0;
for (int i = 0; i < size; i++) {
if (pattern[i] > 0) {
output[j] = input[i];
j++;
}
}
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_interleave.c 0 → 100644
View file @ 5cf8d93a
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
void nr_polar_interleaving_pattern(uint16_t K, uint8_t I_IL, uint16_t *PI_k_){
uint8_t K_IL_max=164, k=0;
uint8_t interleaving_pattern_table[164] = {0, 2, 4, 7, 9, 14, 19, 20, 24, 25, 26, 28, 31, 34,
42, 45, 49, 50, 51, 53, 54, 56, 58, 59, 61, 62, 65, 66,
67, 69, 70, 71, 72, 76, 77, 81, 82, 83, 87, 88, 89, 91,
93, 95, 98, 101, 104, 106, 108, 110, 111, 113, 115, 118, 119, 120,
122, 123, 126, 127, 129, 132, 134, 138, 139, 140, 1, 3, 5, 8,
10, 15, 21, 27, 29, 32, 35, 43, 46, 52, 55, 57, 60, 63,
68, 73, 78, 84, 90, 92, 94, 96, 99, 102, 105, 107, 109, 112,
114, 116, 121, 124, 128, 130, 133, 135, 141, 6, 11, 16, 22, 30,
33, 36, 44, 47, 64, 74, 79, 85, 97, 100, 103, 117, 125, 131,
136, 142, 12, 17, 23, 37, 48, 75, 80, 86, 137, 143, 13, 18,
38, 144, 39, 145, 40, 146, 41, 147, 148, 149, 150, 151, 152, 153,
154, 155, 156, 157, 158, 159, 160, 161, 162, 163};
if (I_IL == 0){
for (; k<= K-1; k++)
PI_k_[k] = k;
} else {
for (int m=0; m<= (K_IL_max-1); m++){
if (interleaving_pattern_table[m] >= (K_IL_max-K)) {
PI_k_[k] = interleaving_pattern_table[m]-(K_IL_max-K);
k++;
}
}
}
}
void nr_polar_interleaver(uint8_t *input, uint8_t *output, uint16_t *pattern, uint16_t size) {
for (int i=0; i<size; i++) output[i]=input[pattern[i]];
}
void nr_polar_deinterleaver(uint8_t *input, uint8_t *output, uint16_t *pattern, uint16_t size) {
for (int i=0; i<size; i++) output[pattern[i]]=input[i];
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_kernal_operation.c 0 → 100644
View file @ 5cf8d93a
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <stdint.h>
void nr_polar_kernel_operation(uint8_t *u, uint8_t *d, uint16_t N)
{
// Martino's algorithm to avoid multiplication for the generating matrix
int i,j;
printf("\nd = ");
for(i=0; i<N; i++)
{
d[i]=0;
for(j=0; j<N; j++)
{
d[i]=d[i]+(( (j-i)& i )==0)*u[j];
}
d[i]=d[i]%2;
printf("%i", d[i]);
}
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_matrix_and_array.c 0 → 100644
View file @ 5cf8d93a
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
void nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(uint8_t *matrix1, uint8_t **matrix2,
uint8_t *output, uint16_t row, uint16_t col) {
for (uint16_t i = 0; i < col; i++) {
output[i] = 0;
for (uint16_t j = 0; j < row; j++) {
output[i] += matrix1[j] * matrix2[j][i];
}
}
}
uint8_t ***nr_alloc_uint8_t_3D_array(uint16_t xlen, uint16_t ylen, uint16_t zlen) {
uint8_t ***output;
int i, j;
if ((output = malloc(xlen * sizeof(*output))) == NULL) {
perror("[nr_alloc_uint8_t_3D_array] Problem at 1D allocation");
return NULL;
}
for (i = 0; i < xlen; i++)
output[i] = NULL;
for (i = 0; i < xlen; i++)
if ((output[i] = malloc(ylen * sizeof *output[i])) == NULL) {
perror("[nr_alloc_uint8_t_3D_array] Problem at 2D allocation");
nr_free_uint8_t_3D_array(output, xlen, ylen);
return NULL;
}
for (i = 0; i < xlen; i++)
for (j = 0; j < ylen; j++)
output[i][j] = NULL;
for (i = 0; i < xlen; i++)
for (j = 0; j < ylen; j++)
if ((output[i][j] = malloc(zlen * sizeof *output[i][j])) == NULL) {
perror("[nr_alloc_uint8_t_3D_array] Problem at 3D allocation");
nr_free_uint8_t_3D_array(output, xlen, ylen);
return NULL;
}
return output;
}
double ***nr_alloc_double_3D_array(uint16_t xlen, uint16_t ylen, uint16_t zlen) {
double ***output;
int i, j;
if ((output = malloc(xlen * sizeof(*output))) == NULL) {
perror("[nr_alloc_double_3D_array] Problem at 1D allocation");
return NULL;
}
for (i = 0; i < xlen; i++)
output[i] = NULL;
for (i = 0; i < xlen; i++)
if ((output[i] = malloc(ylen * sizeof *output[i])) == NULL) {
perror("[nr_alloc_double_3D_array] Problem at 2D allocation");
nr_free_double_3D_array(output, xlen, ylen);
return NULL;
}
for (i = 0; i < xlen; i++)
for (j = 0; j < ylen; j++)
output[i][j] = NULL;
for (i = 0; i < xlen; i++)
for (j = 0; j < ylen; j++)
if ((output[i][j] = malloc(zlen * sizeof *output[i][j])) == NULL) {
perror("[nr_alloc_double_3D_array] Problem at 3D allocation");
nr_free_double_3D_array(output, xlen, ylen);
return NULL;
}
return output;
}
uint8_t **nr_alloc_uint8_t_2D_array(uint16_t xlen, uint16_t ylen) {
uint8_t **output;
int i, j;
if ((output = malloc(xlen * sizeof(*output))) == NULL) {
perror("[nr_alloc_uint8_t_2D_array] Problem at 1D allocation");
return NULL;
}
for (i = 0; i < xlen; i++)
output[i] = NULL;
for (i = 0; i < xlen; i++)
if ((output[i] = malloc(ylen * sizeof *output[i])) == NULL) {
perror("[nr_alloc_uint8_t_2D_array] Problem at 2D allocation");
nr_free_uint8_t_2D_array(output, xlen);
return NULL;
}
for (i = 0; i < xlen; i++)
for (j = 0; j < ylen; j++)
output[i][j] = 0;
return output;
}
void nr_free_uint8_t_3D_array(uint8_t ***input, uint16_t xlen, uint16_t ylen) {
int i, j;
for (i = 0; i < xlen; i++) {
for (j = 0; j < ylen; j++) {
free(input[i][j]);
}
free(input[i]);
}
free(input);
}
void nr_free_uint8_t_2D_array(uint8_t **input, uint16_t xlen) {
for (int i = 0; i < xlen; i++) free(input[i]);
free(input);
}
void nr_free_double_3D_array(double ***input, uint16_t xlen, uint16_t ylen) {
int i, j;
for (i = 0; i < xlen; i++) {
for (j = 0; j < ylen; j++) {
free(input[i][j]);
}
free(input[i]);
}
free(input);
}
// Modified Bubble Sort.
void nr_sort_asc_double_1D_array_ind(double *matrix, uint8_t *ind, uint8_t len) {
uint8_t swaps;
double temp;
uint8_t tempInd;
for (uint8_t i = 0; i < len; i++) {
swaps = 0;
for (uint8_t j = 0; j < (len - i) - 1; j++) {
if (matrix[j] > matrix[j + 1]) {
temp = matrix[j];
matrix[j] = matrix[j + 1];
matrix[j + 1] = temp;
tempInd = ind[j];
ind[j] = ind[j + 1];
ind[j + 1] = tempInd;
swaps++;
}
}
if (swaps == 0)
break;
}
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_output_length.c 0 → 100644
View file @ 5cf8d93a
#include <math.h>
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
uint32_t nr_polar_output_length(uint16_t K, uint16_t E, uint8_t n_max){
uint8_t n_1, n_2, n_min=5, n;
uint32_t polar_code_output_length;
double R_min=1.0/8;
if ( (E <= (9.0/8)*pow(2,ceil(log2(E))-1)) && (K/E < 9.0/16) ) {
n_1 = ceil(log2(E))-1;
} else {
n_1 = ceil(log2(E));
}
n_2 = ceil(log2(K/R_min));
n=n_max;
if (n>n_1) n=n_1;
if (n>n_2) n=n_2;
if (n<n_min) n=n_min;
polar_code_output_length = (uint32_t) pow(2.0,n);
return polar_code_output_length;
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_pbch_defs.h 0 → 100644
View file @ 5cf8d93a
/*
* Defines the constant variables for polar coding of the PBCH.
*/
#ifndef __NR_POLAR_PBCH_DEFS__H__
#define __NR_POLAR_PBCH_DEFS__H__
#define NR_POLAR_PBCH_PAYLOAD_BITS 32 //uint16_t
#define NR_POLAR_PBCH_CRC_PARITY_BITS 24
#define NR_POLAR_PBCH_CRC_ERROR_CORRECTION_BITS 3
//Assumed 3 by 3GPP when NR_POLAR_PBCH_L>8 to meet false alarm rate requirements.
//Ref. 38-212 v15.0.1, Section 7.1.4: Channel Coding
#define NR_POLAR_PBCH_N_MAX 9 //uint8_t
#define NR_POLAR_PBCH_I_IL 1 //uint8_t
#define NR_POLAR_PBCH_N_PC 0 //uint8_t
#define NR_POLAR_PBCH_N_PC_WM 0 //uint8_t
//#define NR_POLAR_PBCH_N 512 //uint16_t
//Ref. 38-212 v15.0.1, Section 7.1.5: Rate Matching
#define NR_POLAR_PBCH_I_BIL 0 //uint8_t
#define NR_POLAR_PBCH_E 864 //uint16_t
//#define NR_POLAR_PBCH_L 5 //uint8_t
#define NR_POLAR_PBCH_PATH_METRIC_APPROXIMATION 0 //uint8_t; 0 --> eq. (8a) and (11b), 1 --> eq. (9) and (12)
/*
* TEST CODE
*/
//#define DEBUG_POLAR
// Usage in code:
//#ifdef DEBUG_POLAR
//...
//#endif
//unsigned int testPayload0=0x00000000, testPayload1=0xffffffff; //payload1=~payload0;
//unsigned int testPayload2=0xa5a5a5a5; //testPayload3=0xb3f02c82;
//double testReceivedPayload3[NR_POLAR_PBCH_E] = {-1, 1, 1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, -1, -1, -1, 1, 1, 1, 1, -1, -1, -1, 1, -1, 1, -1, 1, -1, 1, 1, -1, 1, 1, 1, -1, -1, -1, 1, 1, 1, -1, 1, 1, -1, 1, 1, -1, 1, -1, -1, 1, 1, -1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, 1, -1, -1, 1, -1, 1, -1, -1, 1, 1, -1, -1, -1, -1, 1, 1, 1, -1, 1, -1, 1, 1, 1, -1, 1, -1, -1, 1, -1, -1, 1, 1, -1, -1, 1, 1, 1, -1, -1, 1, 1, -1, -1, -1, -1, 1, -1, -1, -1, 1, -1, -1, 1, 1, 1, 1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, 1, -1, 1, -1, -1, -1, -1, 1, 1, 1, -1, -1, -1, 1, 1, 1, 1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, 1, -1, -1, -1, -1, 1, 1, -1, 1, -1, 1, -1, 1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, -1, -1, 1, -1, -1, -1, -1, 1, -1, 1, -1, -1, -1, 1, 1, 1, 1, 1, 1, -1, 1, 1, -1, 1, 1, 1, -1, -1, 1, 1, 1, 1, -1, 1, 1, -1, 1, -1, 1, -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, -1, 1, -1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, -1, 1, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, -1, -1, 1, 1, 1, -1, -1, -1, -1, -1, -1, -1, -1, 1, -1, 1, 1, 1, -1, 1, -1, 1, 1, 1, -1, -1, -1, 1, 1, 1, -1, -1, -1, 1, -1, -1, 1, 1, 1, -1, 1, -1, -1, 1, -1, 1, -1, 1, -1, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, -1, -1, -1, -1, 1, -1, -1, -1, 1, 1, -1, 1, 1, -1, 1, -1, -1, 1, 1, -1, 1, 1, 1, -1, 1, -1, 1, 1, 1, 1, -1, -1, -1, 1, -1, 1, 1, -1, 1, -1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, 1, 1, 1, -1, -1, -1, -1, 1, -1, -1, 1, 1, -1, -1, 1, -1, 1, 1, 1, -1, 1, -1, -1, -1, -1, 1, -1, -1, -1, -1, 1, -1, 1, 1, -1, 1, -1, 1, -1, -1, -1, -1, -1, 1, 1, -1, -1, -1, -1, 1, 1, -1, -1, -1, -1, -1, 1, 1, -1, 1, -1, 1, -1, 1, 1, -1, 1, -1, -1, -1, 1, 1, -1, 1, 1, 1, -1, -1, -1, -1, 1, -1, 1, -1, 1, -1, 1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, -1, 1, 1, 1, -1, 1, -1, 1, 1, -1, 1, -1, -1, -1, 1, 1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, -1, -1, -1, 1, 1, 1, 1, -1, -1, -1, 1, -1, 1, -1, 1, -1, 1, 1, -1, 1, 1, 1, -1, -1, -1, 1, 1, 1, -1, 1, 1, -1, 1, 1, -1, 1, -1, -1, 1, 1, -1, 1, 1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, 1, -1, -1, 1, -1, 1, -1, -1, 1, 1, -1, -1, -1, -1, 1, 1, 1, -1, 1, -1, 1, 1, 1, -1, 1, -1, -1, 1, -1, -1, 1, 1, -1, -1, 1, 1, 1, -1, -1, 1, 1, -1, -1, -1, -1, 1, -1, -1, -1, 1, -1, -1, 1, 1, 1, 1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, 1, -1, 1, -1, -1, -1, -1, 1, 1, 1, -1, -1, -1, 1, 1, 1, 1, -1, -1, -1, -1, -1, 1, 1, 1, 1, 1, -1, -1, 1, 1, -1, -1, 1, 1, 1, -1, -1, -1, -1, 1, 1, -1, 1, -1, 1, -1, 1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, -1, -1, 1, -1, -1, -1, -1, 1, -1, 1, -1, -1, -1, 1, 1, 1, 1, 1, 1, -1, 1, 1, -1, 1, 1, 1, -1, -1, 1, 1, 1, 1, -1, 1, 1, -1, 1, -1, 1, -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, -1, 1, -1, -1, 1, 1, -1, 1, -1, -1, 1, -1, 1, -1, 1, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, -1, -1, 1, 1, 1, -1, -1, -1, -1, -1, -1, -1, -1, 1, -1, 1, 1, 1, -1, 1, -1, 1, 1, 1, -1, -1, -1, 1, 1, 1, -1, -1, -1, 1, -1, -1, 1, 1, 1, -1, 1, -1, -1, 1, -1, 1, -1, 1, -1, 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1, -1, -1, 1, 1, -1, -1};
#endif
openair1/PHY/CODING/nrPolar_tools/nr_polar_pucch_defs.h 0 → 100644
View file @ 5cf8d93a
/*
* Defines the constant variables for polar coding of the PUCCH.
*/
#ifndef __NR_POLAR_PUCCH_DEFS__H__
#define __NR_POLAR_PUCCH_DEFS__H__
#define NR_POLAR_PUCCH_PAYLOAD_BITS 16
//Ref. 38-212 v15.0.1
#define NR_POLAR_PUCCH_N_MAX 10 //uint8_t <------
#define NR_POLAR_PUCCH_I_IL 1 //uint8_t <--- interleaving: if 0 no interleaving
#define NR_POLAR_PUCCH_N_PC 3 //uint8_t <-- or zero ??
#define NR_POLAR_PUCCH_N_PC_WM 0 //uint8_t
//#define NR_POLAR_PUCCH_N 512 //uint16_t
//Ref. 38-212 v15.0.1, Section 7.1.5: Rate Matching
#define NR_POLAR_PUCCH_I_BIL 0 //uint8_t
#define NR_POLAR_PUCCH_E 864 //uint16_t
/*
* TEST CODE
*/
//unsigned int testPayload0=0x00000000, testPayload1=0xffffffff; //payload1=~payload0;
//unsigned int testPayload2=0xa5a5a5a5, testPayload3=0xb3f02c82;
#endif
openair1/PHY/CODING/nrPolar_tools/nr_polar_rate_match.c 0 → 100644
View file @ 5cf8d93a
#include <math.h>
#include "PHY/CODING/nrPolar_tools/nr_polar_defs.h"
void nr_polar_rate_matching_pattern(uint16_t *rmp, uint16_t *J, uint8_t *P_i_, uint16_t K, uint16_t N, uint16_t E){
uint8_t i;
uint16_t *d, *y, ind;
d = (uint16_t *)malloc(sizeof(uint16_t) * N);
y = (uint16_t *)malloc(sizeof(uint16_t) * N);
for (int m=0; m<=N-1; m++) d[m]=m;
for (int m=0; m<=N-1; m++){
i=floor((32*m)/N);
J[m] = (P_i_[i]*(N/32)) + (m%(N/32));
y[m] = d[J[m]];
}
if (E>=N) { //repetition
for (int k=0; k<=E-1; k++) {
ind = (k%N);
rmp[k]=y[ind];
}
} else {
if ( (K/(double)E) <= (7.0/16) ) { //puncturing
for (int k=0; k<=E-1; k++) {
rmp[k]=y[k+N-E];
}
} else { //shortening
for (int k=0; k<=E-1; k++) {
rmp[k]=y[k];
}
}
}
free(d);
free(y);
}
void nr_polar_rate_matching(double *input, double *output, uint16_t *rmp, uint16_t K, uint16_t N, uint16_t E){
if (E>=N) { //repetition
for (int i=0; i<=N-1; i++) output[i]=0;
for (int i=0; i<=E-1; i++){
output[rmp[i]]+=input[i];
}
} else {
if ( (K/(double)E) <= (7.0/16) ) { //puncturing
for (int i=0; i<=N-1; i++) output[i]=0;
} else { //shortening
for (int i=0; i<=N-1; i++) output[i]=INFINITY;
}
for (int i=0; i<=E-1; i++){
output[rmp[i]]=input[i];
}
}
}
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]];
}
openair1/PHY/CODING/nrPolar_tools/nr_polar_sequence_pattern.c 0 → 100644
View file @ 5cf8d93a
This diff is collapsed.
openair1/PHY/CODING/nrPolar_tools/nr_pucch_encoder.c 0 → 100644
View file @ 5cf8d93a
This diff is collapsed.
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