From d6760ac7b1e7ae5afd66be1b9b2af31eeb7554e7 Mon Sep 17 00:00:00 2001
From: steve <steve@romeo.(none)>
Date: Sat, 9 Feb 2008 10:44:34 +0000
Subject: done

---
 gsm-tvoid/src/lib/gsm_constants.h | 126 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100755 gsm-tvoid/src/lib/gsm_constants.h

(limited to 'gsm-tvoid/src/lib/gsm_constants.h')

diff --git a/gsm-tvoid/src/lib/gsm_constants.h b/gsm-tvoid/src/lib/gsm_constants.h
new file mode 100755
index 0000000..3cc771e
--- /dev/null
+++ b/gsm-tvoid/src/lib/gsm_constants.h
@@ -0,0 +1,126 @@
+#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
+#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  
+};
+
+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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