polartest.c 14.6 KB
Newer Older
Guy De Souza's avatar
Guy De Souza committed
1
2
3
4
5
6
7
8
9
#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"
yilmazt's avatar
yilmazt committed
10
#include "PHY/CODING/coding_defs.h"
yilmazt's avatar
yilmazt committed
11
#include "SIMULATION/TOOLS/sim.h"
Guy De Souza's avatar
Guy De Souza committed
12

Florian Kaltenberger's avatar
Florian Kaltenberger committed
13
//#define DEBUG_DCI_POLAR_PARAMS
yilmazt's avatar
yilmazt committed
14
//#define DEBUG_POLAR_TIMING
15
//#define DEBUG_CRC
yilmazt's avatar
yilmazt committed
16

Guy De Souza's avatar
Guy De Souza committed
17
18
19
20
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;
knopp's avatar
knopp committed
21
22
	time_stats_t polar_decoder_init,polar_rate_matching,decoding,bit_extraction,deinterleaving;
	time_stats_t path_metric,sorting,update_LLR;
Guy De Souza's avatar
Guy De Souza committed
23
	opp_enabled=1;
24
25
	int decoder_int16=0;
	int generate_optim_code=0;
Guy De Souza's avatar
Guy De Souza committed
26
27
28
29
	cpu_freq_GHz = get_cpu_freq_GHz();
	reset_meas(&timeEncoder);
	reset_meas(&timeDecoder);
	randominit(0);
yilmazt's avatar
yilmazt committed
30
	crcTableInit();
31

Guy De Souza's avatar
Guy De Souza committed
32
	//Default simulation values (Aim for iterations = 1000000.)
yilmazt's avatar
yilmazt committed
33
	int itr, iterations = 1000, arguments, polarMessageType = 0; //0=PBCH, 1=DCI, -1=UCI
yilmazt's avatar
yilmazt committed
34
	double SNRstart = -20.0, SNRstop = 0.0, SNRinc= 0.5; //dB
Guy De Souza's avatar
Guy De Souza committed
35
36
37
38

	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.
yilmazt's avatar
yilmazt committed
39
	uint16_t testLength = 0, coderLength = 0, blockErrorCumulative=0, bitErrorCumulative=0;
Guy De Souza's avatar
Guy De Souza committed
40
	double timeEncoderCumulative = 0, timeDecoderCumulative = 0;
yilmazt's avatar
yilmazt committed
41
	uint8_t aggregation_level = 8, decoderListSize = 8, pathMetricAppr = 0;
Guy De Souza's avatar
Guy De Souza committed
42

Florian Kaltenberger's avatar
Florian Kaltenberger committed
43
	while ((arguments = getopt (argc, argv, "s:d:f:m:i:l:a:hqg")) != -1)
Guy De Souza's avatar
Guy De Souza committed
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
	switch (arguments)
	{
		case 's':
			SNRstart = atof(optarg);
			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;

74
  	        case 'q':
75
		        decoder_int16=1;
76
77
		        break;

knopp's avatar
knopp committed
78
79
80
81
82
    	        case 'g':
		  generate_optim_code=1;
                  iterations=1;
		  SNRstart=-6.0;
		  SNRstop =-6.0;
83
		  decoder_int16=1;
knopp's avatar
knopp committed
84
                  break;
85

86
	        case 'h':
Florian Kaltenberger's avatar
Florian Kaltenberger committed
87
		  printf("./polartest -s SNRstart -d SNRinc -f SNRstop -m [0=PBCH|1=DCI|2=UCI] -i iterations -l decoderListSize -a pathMetricAppr -q (use fixed point decoder)\n");
88
89
		  exit(-1);

Guy De Souza's avatar
Guy De Souza committed
90
91
		default:
			perror("[polartest.c] Problem at argument parsing with getopt");
92
			exit(-1);
Guy De Souza's avatar
Guy De Souza committed
93
94
	}

yilmazt's avatar
yilmazt committed
95
	if (polarMessageType == 0) { //PBCH
Guy De Souza's avatar
Guy De Souza committed
96
97
		testLength = NR_POLAR_PBCH_PAYLOAD_BITS;
		coderLength = NR_POLAR_PBCH_E;
98
		aggregation_level = NR_POLAR_PBCH_AGGREGATION_LEVEL;
yilmazt's avatar
yilmazt committed
99
	} else if (polarMessageType == 1) { //DCI
100
101
102
		//testLength = nr_get_dci_size(params_rel15->dci_format, params_rel15->rnti_type, &fp->initial_bwp_dl, cfg);
		testLength = 20;
		coderLength = 108; //to be changed by aggregate level function.
yilmazt's avatar
yilmazt committed
103
	} else if (polarMessageType == -1) { //UCI
Guy De Souza's avatar
Guy De Souza committed
104
105
106
		//testLength = ;
		//coderLength = ;
	}
Florian Kaltenberger's avatar
WIP    
Florian Kaltenberger committed
107
	
Guy De Souza's avatar
Guy De Souza committed
108
109
110
111

	//Logging
	time_t currentTime;
	time (&currentTime);
112
113
	char fileName[512], currentTimeInfo[25];
	char folderName[] = ".";
Guy De Souza's avatar
Guy De Souza committed
114

115
	/*
yilmazt's avatar
yilmazt committed
116
117
	folderName=getenv("HOME");
	strcat(folderName,"/Desktop/polartestResults");
118
119
	*/
	
yilmazt's avatar
yilmazt committed
120
121
122
	#ifdef DEBUG_POLAR_TIMING
	sprintf(fileName,"%s/TIMING_ListSize_%d_pmAppr_%d_Payload_%d_Itr_%d",folderName,decoderListSize,pathMetricAppr,testLength,iterations);
	#else
yilmazt's avatar
yilmazt committed
123
	sprintf(fileName,"%s/_ListSize_%d_pmAppr_%d_Payload_%d_Itr_%d",folderName,decoderListSize,pathMetricAppr,testLength,iterations);
yilmazt's avatar
yilmazt committed
124
	#endif
Guy De Souza's avatar
Guy De Souza committed
125
126
127
	strftime(currentTimeInfo, 25, "_%Y-%m-%d-%H-%M-%S.csv", localtime(&currentTime));
	strcat(fileName,currentTimeInfo);

yilmazt's avatar
yilmazt committed
128
	//Create "~/Desktop/polartestResults" folder if it doesn't already exist.
129
	/*
Guy De Souza's avatar
Guy De Souza committed
130
	struct stat folder = {0};
yilmazt's avatar
yilmazt committed
131
	if (stat(folderName, &folder) == -1) mkdir(folderName, S_IRWXU | S_IRWXG | S_IRWXO);
132
133
	*/
	
yilmazt's avatar
yilmazt committed
134
	FILE* logFile;
135
136
137
138
139
	logFile = fopen(fileName, "w");
	if (logFile==NULL) {
	  fprintf(stderr,"[polartest.c] Problem creating file %s with fopen\n",fileName);
	  exit(-1);
	}
yilmazt's avatar
yilmazt committed
140
141
142
143

#ifdef DEBUG_POLAR_TIMING
    fprintf(logFile,",timeEncoderCRCByte[us],timeEncoderCRCBit[us],timeEncoderInterleaver[us],timeEncoderBitInsertion[us],timeEncoder1[us],timeEncoder2[us],timeEncoderRateMatching[us],timeEncoderByte2Bit[us]\n");
#else
Guy De Souza's avatar
Guy De Souza committed
144
    fprintf(logFile,",SNR,nBitError,blockErrorState,t_encoder[us],t_decoder[us]\n");
yilmazt's avatar
yilmazt committed
145
#endif
Guy De Souza's avatar
Guy De Souza committed
146

yilmazt's avatar
yilmazt committed
147
148
    uint8_t testArrayLength = ceil(testLength / 32.0);
    uint8_t coderArrayLength = ceil(coderLength / 32.0);
yilmazt's avatar
yilmazt committed
149

yilmazt's avatar
yilmazt committed
150
151
152
153
154
155
	uint32_t *testInput = malloc(sizeof(uint32_t) * testArrayLength); //generate randomly
	uint32_t *encoderOutput = malloc(sizeof(uint32_t) * coderArrayLength);
	uint32_t *estimatedOutput = malloc(sizeof(uint32_t) * testArrayLength); //decoder output
	memset(testInput,0,sizeof(uint32_t) * testArrayLength);
	memset(encoderOutput,0,sizeof(uint32_t) * coderArrayLength);
	memset(estimatedOutput,0,sizeof(uint32_t) * testArrayLength);
Guy De Souza's avatar
Guy De Souza committed
156

yilmazt's avatar
yilmazt committed
157
	uint8_t *encoderOutputByte = malloc(sizeof(uint8_t) * coderLength);
Guy De Souza's avatar
Guy De Souza committed
158
159
	double *modulatedInput = malloc (sizeof(double) * coderLength); //channel input
	double *channelOutput  = malloc (sizeof(double) * coderLength); //add noise
knopp's avatar
knopp committed
160
161
162
	int16_t *channelOutput_int16;
	if (decoder_int16 == 1) channelOutput_int16 = (int16_t*)malloc (sizeof(int16_t) * coderLength);
 
yilmazt's avatar
yilmazt committed
163
	t_nrPolar_paramsPtr nrPolar_params = NULL, currentPtr = NULL;
yilmazt's avatar
yilmazt committed
164
	nr_polar_init(&nrPolar_params, polarMessageType, testLength, aggregation_level);
yilmazt's avatar
yilmazt committed
165
166
	currentPtr = nr_polar_params(nrPolar_params, polarMessageType, testLength, aggregation_level);

yilmazt's avatar
yilmazt committed
167
#ifdef DEBUG_DCI_POLAR_PARAMS
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
	uint32_t dci_pdu[4];
	memset(dci_pdu,0,sizeof(uint32_t)*4);
	dci_pdu[0]=0x01189400;
	printf("dci_pdu: [0]->0x%08x \t [1]->0x%08x \t [2]->0x%08x \t [3]->0x%08x\n",
			dci_pdu[0], dci_pdu[1], dci_pdu[2], dci_pdu[3]);
	uint32_t encoder_output[54];
	memset(encoder_output,0,sizeof(uint32_t)*54);
	uint16_t size=41;
	uint16_t rnti=3;
	aggregation_level=8;
	nr_polar_init(&nrPolar_params, 1, size, aggregation_level);
	t_nrPolar_paramsPtr currentPtrDCI=nr_polar_params(nrPolar_params, 1, size, aggregation_level);

	polar_encoder_dci(dci_pdu, encoder_output, currentPtrDCI, rnti);
	for (int i=0;i<54;i++)
		printf("encoder_output: [%2d]->0x%08x \n",i, encoder_output[i]);

	uint8_t *encoder_outputByte = malloc(sizeof(uint8_t) * currentPtrDCI->encoderLength);
	double *channel_output  = malloc (sizeof(double) * currentPtrDCI->encoderLength);
	uint32_t dci_estimation[4];
	memset(dci_estimation,0,sizeof(uint32_t)*4);
	printf("dci_estimation: [0]->0x%08x \t [1]->0x%08x \t [2]->0x%08x \t [3]->0x%08x\n",
			dci_estimation[0], dci_estimation[1], dci_estimation[2], dci_estimation[3]);
	nr_bit2byte_uint32_8_t(encoder_output, currentPtrDCI->encoderLength, encoder_outputByte);
	printf("[polartest] encoder_outputByte: ");
	for (int i = 0; i < currentPtrDCI->encoderLength; i++) printf("%d-", encoder_outputByte[i]);
	printf("\n");
	for(int i=0; i<currentPtrDCI->encoderLength; i++) {
		if (encoder_outputByte[i] == 0) {
			channel_output[i]=1/sqrt(2);
		}
		else {
			channel_output[i]=(-1)/sqrt(2);
		}
	}
knopp's avatar
knopp committed
203

204
205
206
207
208
209
210
211
212
213
214
215
	decoderState = polar_decoder_dci(channel_output,
									 dci_estimation,
									 currentPtrDCI,
									 NR_POLAR_DECODER_LISTSIZE,
									 NR_POLAR_DECODER_PATH_METRIC_APPROXIMATION,
									 rnti);
	printf("dci_estimation: [0]->0x%08x \t [1]->0x%08x \t [2]->0x%08x \t [3]->0x%08x\n",
			dci_estimation[0], dci_estimation[1], dci_estimation[2], dci_estimation[3]);
	return 0;
#endif

#ifdef DEBUG_CRC
yilmazt's avatar
yilmazt committed
216
	uint32_t crc;
yilmazt's avatar
yilmazt committed
217
	unsigned int poly24c = 0xb2b11700;
218
219
220
221
222
223
224
225
226
227
228
229
230
	uint32_t testInputCRC[4];
	testInputCRC[0]=0x00291880;
	//testInputCRC[0]=0x01189400;
	testInputCRC[1]=0x00000000;
	testInputCRC[2]=0x00000000;
	testInputCRC[3]=0x00000000;

	uint32_t testInputcrc=0x01189400;
	uint32_t testInputcrc2=0x00291880;

	uint8_t testInputCRC2[8];
	nr_crc_bit2bit_uint32_8_t(testInputCRC, 32, testInputCRC2);
	printf("testInputCRC2: [0]->%x \t [1]->%x \t [2]->%x \t [3]->%x\n"
yilmazt's avatar
yilmazt committed
231
		   "            [4]->%x \t [5]->%x \t [6]->%x \t [7]->%x\n",
232
233
234
235
236
237
238
239
				testInputCRC2[0], testInputCRC2[1], testInputCRC2[2], testInputCRC2[3],
				testInputCRC2[4], testInputCRC2[5], testInputCRC2[6], testInputCRC2[7]);
	unsigned int crc41 = crc24c(testInputCRC, 32);
	unsigned int crc65 = crc24c(testInputCRC, 56);
	printf("crc41: [0]->0x%08x\tcrc65: [0]->0x%08x\n",crc41, crc65);
	for (int i=0;i<32;i++) printf("crc41[%d]=%d\tcrc65[%d]=%d\n",i,(crc41>>i)&1,i,(crc65>>i)&1);

    crc = crc24c(testInputCRC, testLength)>>8;
yilmazt's avatar
yilmazt committed
240
241
    for (int i=0;i<24;i++) printf("[i]=%d\n",(crc>>i)&1);
    printf("crc: [0]->0x%08x\n",crc);
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
    //crcbit(testInputCRC, sizeof(test) - 1, poly24c));

    testInputCRC[testLength>>3] = ((uint8_t*)&crc)[2];
    testInputCRC[1+(testLength>>3)] = ((uint8_t*)&crc)[1];
    testInputCRC[2+(testLength>>3)] = ((uint8_t*)&crc)[0];
    printf("testInputCRC: [0]->0x%08x \t [1]->0x%08x \t [2]->0x%08x \t [3]->0x%08x\n",
    			testInputCRC[0], testInputCRC[1], testInputCRC[2], testInputCRC[3]);


    //uint32_t trial32 = 0xffffffff;
    uint32_t trial32 = 0xf10fffff;
    uint8_t a[4];
	//memcpy(a, &trial32, sizeof(trial32));
	*(uint32_t *)a = trial32;
    unsigned char trial[4];
    trial[0]=0xff; trial[1]=0xff;  trial[2]=0x0f; trial[3]=0xf1;
    uint32_t trialcrc = crc24c(trial, 32);
    uint32_t trialcrc32 = crc24c((uint8_t *)&trial32, 32);
    //uint32_t trialcrc32 = crc24c(a, 32);
    printf("crcbit(trial = %x\n", crcbit(trial, 4, poly24c));
    printf("trialcrc = %x\n", trialcrc);
    printf("trialcrc32 = %x\n", trialcrc32);
    for (int i=0;i<32;i++) printf("trialcrc[%2d]=%d\ttrialcrc32[%2d]=%d\n",i,(trialcrc>>i)&1,i,(trialcrc32>>i)&1);


    //uint8_t nr_polar_A[32] = {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1};
    uint8_t nr_polar_A[32] = {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,1,1,1,1,1,1,1,1,0,0,0,1};
    uint8_t nr_polar_crc[24];
    uint8_t **crc_generator_matrix = crc24c_generator_matrix(32);
	nr_matrix_multiplication_uint8_t_1D_uint8_t_2D(nr_polar_A,
												   crc_generator_matrix,
												   nr_polar_crc,
												   32,
												   24);
	for (uint8_t i = 0; i < 24; i++){
		nr_polar_crc[i] = (nr_polar_crc[i] % 2);
		printf("nr_polar_crc[%d]=%d\n",i,nr_polar_crc[i]);
	}
    return 0;
yilmazt's avatar
yilmazt committed
281
#endif
Guy De Souza's avatar
Guy De Souza committed
282

yilmazt's avatar
yilmazt committed
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
#ifdef DEBUG_POLAR_TIMING
	for (SNR = SNRstart; SNR <= SNRstop; SNR += SNRinc) {
		SNR_lin = pow(10, SNR / 10);
		for (itr = 1; itr <= iterations; itr++) {
			for (int j=0; j<ceil(testLength / 32.0); j++) {
				for(int i=0; i<32; i++) {
					testInput[j] |= ( ((uint32_t) (rand()%2)) &1);
					testInput[j]<<=1;
				}
			}
			printf("testInput: [0]->0x%08x \n", testInput[0]);
			polar_encoder_timing(testInput, encoderOutput, currentPtr, cpu_freq_GHz, logFile);
		}
	}
	fclose(logFile);
	free(testInput);
	free(encoderOutput);
	free(modulatedInput);
	free(channelOutput);
	free(estimatedOutput);
	return (0);
#endif
Guy De Souza's avatar
Guy De Souza committed
305
306

	// We assume no a priori knowledge available about the payload.
yilmazt's avatar
yilmazt committed
307
308
	double aPrioriArray[currentPtr->payloadBits];
	for (int i=0; i<currentPtr->payloadBits; i++) aPrioriArray[i] = NAN;
knopp's avatar
knopp committed
309

Guy De Souza's avatar
Guy De Souza committed
310
	for (SNR = SNRstart; SNR <= SNRstop; SNR += SNRinc) {
knopp's avatar
knopp committed
311
	  printf("SNR %f\n",SNR);
Guy De Souza's avatar
Guy De Souza committed
312
313
314
		SNR_lin = pow(10, SNR/10);
		for (itr = 1; itr <= iterations; itr++) {

yilmazt's avatar
yilmazt committed
315
316
317
318
319
320
321
			for (int i = 0; i < testArrayLength; i++) {
				for (int j = 0; j < (sizeof(testInput[0])*8)-1; j++) {
					testInput[i] |= ( ((uint32_t) (rand()%2)) &1);
					testInput[i]<<=1;
				}
				testInput[i] |= ( ((uint32_t) (rand()%2)) &1);
			}
Guy De Souza's avatar
Guy De Souza committed
322

yilmazt's avatar
yilmazt committed
323
324
325
			/*printf("testInput: [0]->0x%08x\n", testInput[0]);
			for (int i=0; i<32; i++)
				printf("%d\n",(testInput[0]>>i)&1);*/
Guy De Souza's avatar
Guy De Souza committed
326

yilmazt's avatar
yilmazt committed
327
328
329
			start_meas(&timeEncoder);
			polar_encoder(testInput, encoderOutput, currentPtr);
			stop_meas(&timeEncoder);
Guy De Souza's avatar
Guy De Souza committed
330

yilmazt's avatar
yilmazt committed
331
			/*printf("encoderOutput: [0]->0x%08x\n", encoderOutput[0]);
332
			printf("encoderOutput: [1]->0x%08x\n", encoderOutput[1]);*/
knopp's avatar
knopp committed
333

yilmazt's avatar
yilmazt committed
334
335
			//Bit-to-byte:
			nr_bit2byte_uint32_8_t(encoderOutput, coderLength, encoderOutputByte);
Guy De Souza's avatar
Guy De Souza committed
336

yilmazt's avatar
yilmazt committed
337
338
339
340
341
342
			//BPSK modulation
			for(int i=0; i<coderLength; i++) {
				if (encoderOutputByte[i] == 0)
					modulatedInput[i]=1/sqrt(2);
				else
					modulatedInput[i]=(-1)/sqrt(2);
Guy De Souza's avatar
Guy De Souza committed
343

yilmazt's avatar
yilmazt committed
344
				channelOutput[i] = modulatedInput[i] + (gaussdouble(0.0,1.0) * (1/sqrt(2*SNR_lin)));
knopp's avatar
knopp committed
345
346
347
348
349
350
351
352
353

				
				if (decoder_int16==1) {
				  if (channelOutput[i] > 15) channelOutput_int16[i] = 127;
				  else if (channelOutput[i] < -16) channelOutput_int16[i] = -128;
				  else channelOutput_int16[i] = (int16_t) (8*channelOutput[i]);
				}


yilmazt's avatar
yilmazt committed
354
			}
Guy De Souza's avatar
Guy De Souza committed
355

yilmazt's avatar
yilmazt committed
356
357
358
359
360
361
362
			start_meas(&timeDecoder);
			/*decoderState = polar_decoder(channelOutput,
									 	 estimatedOutput,
									 	 currentPtr,
									 	 NR_POLAR_DECODER_LISTSIZE,
									 	 aPrioriArray,
									 	 NR_POLAR_DECODER_PATH_METRIC_APPROXIMATION);*/
knopp's avatar
knopp committed
363
364
365
366
367
368
369
370
371
372
373
374
375
			if (decoder_int16==0)
			  decoderState = polar_decoder_aPriori(channelOutput,
							       estimatedOutput,
							       currentPtr,
							       NR_POLAR_DECODER_LISTSIZE,
							       NR_POLAR_DECODER_PATH_METRIC_APPROXIMATION,
							       aPrioriArray);
			else 
			  decoderState = polar_decoder_int16(channelOutput_int16,
							     estimatedOutput,
							     currentPtr);

			  
yilmazt's avatar
yilmazt committed
376
377
			stop_meas(&timeDecoder);
			/*printf("testInput: [0]->0x%08x\n", testInput[0]);
378
379
			printf("estimatedOutput: [0]->0x%08x\n", estimatedOutput[0]);*/

yilmazt's avatar
yilmazt committed
380
381
382
383
384
385
386
387
388
389
390
391
392

			//calculate errors
			if (decoderState==-1) {
				blockErrorState=-1;
				nBitError=-1;
			} else {
				for (int i = 0; i < testArrayLength; i++) {
					for (int j = 0; j < (sizeof(testInput[0])*8); j++) {
						if (((estimatedOutput[i]>>j) & 1) != ((testInput[i]>>j) & 1)) nBitError++;
					}
				}

				if (nBitError>0) blockErrorState=1;
Guy De Souza's avatar
Guy De Souza committed
393
394
			}

yilmazt's avatar
yilmazt committed
395
396
397
398
399
400
401
402
403
404
405
406
407
			//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;
			}
Guy De Souza's avatar
Guy De Souza committed
408

yilmazt's avatar
yilmazt committed
409
410
411
			decoderState=0;
			nBitError=0;
			blockErrorState=0;
Guy De Souza's avatar
Guy De Souza committed
412
413
414
415
416
417
418

		}
		//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);
419

Florian Kaltenberger's avatar
Florian Kaltenberger committed
420
421
422
		if (blockErrorCumulative==0 && bitErrorCumulative==0)
		  break;

Guy De Souza's avatar
Guy De Souza committed
423
424
425
426
427
428
429
430
		blockErrorCumulative = 0; bitErrorCumulative = 0;
		timeEncoderCumulative = 0; timeDecoderCumulative = 0;
	}

	print_meas(&timeEncoder,"polar_encoder",NULL,NULL);
	print_meas(&timeDecoder,"polar_decoder",NULL,NULL);

	fclose(logFile);
yilmazt's avatar
yilmazt committed
431
	//Bit
Guy De Souza's avatar
Guy De Souza committed
432
433
	free(testInput);
	free(encoderOutput);
yilmazt's avatar
yilmazt committed
434
435
436
	free(estimatedOutput);
	//Byte
	free(encoderOutputByte);
Guy De Souza's avatar
Guy De Souza committed
437
438
439
440
441
	free(modulatedInput);
	free(channelOutput);

	return (0);
}