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#ifndef INCLUDED_GSM_CONSTANTS_H
#define INCLUDED_GSM_CONSTANTS_H
#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 //8.25
#define DATA_BITS 58 //size of 1 data block in normal burst
#define N_TRAIN_BITS 26
#define N_SYNC_BITS 64
#define USEFUL_BITS 142 //(2*DATA_BITS + N_TRAIN_BITS )
#define FCCH_BITS USEFUL_BITS
#define TS_BITS (TAIL_BITS+USEFUL_BITS+TAIL_BITS+GUARD_BITS) //a full TS (156)
#define TS_PER_FRAME 8
#define FRAME_BITS (TS_PER_FRAME * TS_BITS + 2) // +2 for extra 8*0.25 guard bits
#define FCCH_POS TAIL_BITS
#define SYNC_POS 39
#define TRAIN_POS 58
static const float gaussian_impulse[] = { 0.03455935, 0.39947558, 0.90323022, 0.39947558, 0.03455935};
enum SYNC_STATE {
WAIT_FCCH,
WAIT_SCH_ALIGN,
WAIT_SCH,
SYNCHRONIZED
};
enum BURST_TYPE {
UNKNOWN,
FCCH,
PARTIAL_SCH, //successful correlation, but missing data
SCH,
CTS_SCH,
COMPACT_SCH,
NORMAL,
DUMMY,
ACCESS
};
static const int 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
};
static const int CTS_SYNC[] = {
1, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1,
0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0,
1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0,
1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 0, 1
};
static const int COMPACT_SYNC[] = {
1, 1, 1, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 1, 1, 1,
0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0,
0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
0, 0, 1, 0, 0, 0, 1, 1, 0, 1, 0, 0, 1, 1, 1, 0
};
// Sync : .+...++.+..+++.++++++.++++++....++.+..+.+.+++.+.+...+..++++..+..
// Diff Encoded Sync: .++..+.+++.+..++.....++.....+...+.+++.+++++..+++++..++.+...+.++.
#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_FCCH 8
#define TS_DUMMY 9
static const unsigned char train_seq[10][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},
{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, //#9 FCCH ;-)
{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[] = {
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
};
//Diff encoded train_seq
//TSC0: +.++.+++..+...++..++.+++..
//TSC1: +.+++.++..++...+..++.+++..
//TSC2: +++...+..++..+++.++...+..+
//TSC3: +++..+...++.+++..++..+...+
//TSC4: +..+.++++..+.++....+.++++.
//TSC5: +++.+..++++.+....++.+..+++
//TSC6: .+++.+....++.+..++++.+....
//TSC7: ...++...+..++.+++..++...+.
//TSC8: ..........................
//TSC9: ++..+..+++..+..+++..+..+++
#endif /* INCLUDED_GSM_CONSTANTS_H */
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