#pragma once | |
#include <complex> | |
#define gr_complex std::complex<float> | |
#define GSM_SYMBOL_RATE (1625000.0/6.0) //symbols per second | |
#define GSM_SYMBOL_PERIOD (1.0/GSM_SYMBOL_RATE) //seconds per symbol | |
//Burst timing | |
#define TAIL_BITS 3 | |
#define GUARD_BITS 8 | |
#define GUARD_FRACTIONAL 0.25 //fractional part of guard period | |
#define GUARD_PERIOD GUARD_BITS + GUARD_FRACTIONAL | |
#define DATA_BITS 57 //size of 1 data block in normal burst | |
#define STEALING_BIT 1 | |
#define N_TRAIN_BITS 26 | |
#define N_SYNC_BITS 64 | |
#define USEFUL_BITS 142 //(2*(DATA_BITS+STEALING_BIT) + N_TRAIN_BITS ) | |
#define FCCH_BITS USEFUL_BITS | |
#define BURST_SIZE (USEFUL_BITS+2*TAIL_BITS) | |
#define ACCESS_BURST_SIZE 88 | |
#define PROCESSED_CHUNK BURST_SIZE+2*GUARD_PERIOD | |
#define SCH_DATA_LEN 39 | |
#define TS_BITS (TAIL_BITS+USEFUL_BITS+TAIL_BITS+GUARD_BITS) //a full TS (156 bits) | |
#define TS_PER_FRAME 8 | |
#define FRAME_BITS (TS_PER_FRAME * TS_BITS + 2) // 156.25 * 8 | |
#define FCCH_POS TAIL_BITS | |
#define SYNC_POS (TAIL_BITS + 39) | |
#define TRAIN_POS ( TAIL_BITS + (DATA_BITS+STEALING_BIT) + 5) //first 5 bits of a training sequence | |
//aren't used for channel impulse response estimation | |
#define TRAIN_BEGINNING 5 | |
#define SAFETY_MARGIN 6 // | |
#define FCCH_HITS_NEEDED (USEFUL_BITS - 4) | |
#define FCCH_MAX_MISSES 1 | |
#define FCCH_MAX_FREQ_OFFSET 100 | |
#define CHAN_IMP_RESP_LENGTH 5 | |
#define MAX_SCH_ERRORS 10 //maximum number of subsequent sch errors after which gsm receiver goes to find_next_fcch state | |
typedef enum { empty, fcch_burst, sch_burst, normal_burst, rach_burst, dummy, dummy_or_normal, normal_or_noise } burst_type; | |
typedef enum { unknown, multiframe_26, multiframe_51 } multiframe_type; | |
static const unsigned char SYNC_BITS[] = { | |
1, 0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, | |
0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, | |
0, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, | |
0, 1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1 | |
}; | |
const unsigned FCCH_FRAMES[] = { 0, 10, 20, 30, 40 }; | |
const unsigned SCH_FRAMES[] = { 1, 11, 21, 31, 41 }; | |
const unsigned BCCH_FRAMES[] = { 2, 3, 4, 5 }; //!!the receiver shouldn't care about logical | |
//!!channels so this will be removed from this header | |
const unsigned TEST_CCH_FRAMES[] = { 2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 22, 23, 24, 25, 26, 27, 28, 29, 32, 33, 34, 35, 36, 37, 38, 39, 42, 43, 44, 45, 46, 47, 48, 49 }; | |
const unsigned TRAFFIC_CHANNEL_F[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24 }; | |
const unsigned TEST51[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50 }; | |
#define TSC0 0 | |
#define TSC1 1 | |
#define TSC2 2 | |
#define TSC3 3 | |
#define TSC4 4 | |
#define TSC5 5 | |
#define TSC6 6 | |
#define TSC7 7 | |
#define TS_DUMMY 8 | |
#define TRAIN_SEQ_NUM 9 | |
#define TIMESLOT0 0 | |
#define TIMESLOT1 1 | |
#define TIMESLOT2 2 | |
#define TIMESLOT3 3 | |
#define TIMESLOT4 4 | |
#define TIMESLOT5 5 | |
#define TIMESLOT6 6 | |
#define TIMESLOT7 7 | |
static const unsigned char train_seq[TRAIN_SEQ_NUM][N_TRAIN_BITS] = { | |
{0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1}, | |
{0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1}, | |
{0, 1, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 0}, | |
{0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0}, | |
{0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1}, | |
{0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0}, | |
{1, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1}, | |
{1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0}, | |
{0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1} // DUMMY | |
}; | |
//Dummy burst 0xFB 76 0A 4E 09 10 1F 1C 5C 5C 57 4A 33 39 E9 F1 2F A8 | |
static const unsigned char dummy_burst[] = { | |
0, 0, 0, | |
1, 1, 1, 1, 1, 0, 1, 1, 0, 1, | |
1, 1, 0, 1, 1, 0, 0, 0, 0, 0, | |
1, 0, 1, 0, 0, 1, 0, 0, 1, 1, | |
1, 0, 0, 0, 0, 0, 1, 0, 0, 1, | |
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, | |
0, 1, 1, 1, 1, 1, 0, 0, | |
0, 1, 1, 1, 0, 0, 0, 1, 0, 1, | |
1, 1, 0, 0, 0, 1, 0, 1, 1, 1, | |
0, 0, 0, 1, 0, 1, | |
0, 1, 1, 1, 0, 1, 0, 0, 1, 0, | |
1, 0, 0, 0, 1, 1, 0, 0, 1, 1, | |
0, 0, 1, 1, 1, 0, 0, 1, 1, 1, | |
1, 0, 1, 0, 0, 1, 1, 1, 1, 1, | |
0, 0, 0, 1, 0, 0, 1, 0, 1, 1, | |
1, 1, 1, 0, 1, 0, 1, 0, | |
0, 0, 0 | |
}; |