diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/target/trx_toolkit/rand_burst_gen.py | 72 |
1 files changed, 16 insertions, 56 deletions
diff --git a/src/target/trx_toolkit/rand_burst_gen.py b/src/target/trx_toolkit/rand_burst_gen.py index 46c1e090..80ff3f29 100644 --- a/src/target/trx_toolkit/rand_burst_gen.py +++ b/src/target/trx_toolkit/rand_burst_gen.py @@ -28,50 +28,6 @@ from gsm_shared import * class RandBurstGen: - # GSM 05.02 Chapter 5.2.3 Normal Burst - nb_tsc_list = [ - [ - 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, 1, 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, - ], - ] - - # GSM 05.02 Chapter 5.2.5 SCH training sequence - sb_tsc = [ - 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, - ] - # GSM 05.02 Chapter 5.2.6 Dummy Burst db_bits = [ 0, 0, 0, @@ -87,15 +43,13 @@ class RandBurstGen: 0, 0, 0, ] - # GSM 05.02 Chapter 5.2.7 Access burst - ab_tsc = [ - 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, - 1, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, - 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, - ] + # Pick a random TSC for a given burst type + def get_rand_tsc(self, bt): + tsc_list = filter(lambda seq: seq.bt == bt, list(TrainingSeqGMSK)) + return random.choice(tsc_list) # Generate a normal burst - def gen_nb(self, seq_idx = 0): + def gen_nb(self, tsc = None): buf = [] # Tailing bits @@ -109,7 +63,9 @@ class RandBurstGen: buf.append(random.randint(0, 1)) # Training sequence - buf += self.nb_tsc_list[seq_idx] + if tsc is None: + tsc = self.get_rand_tsc(BurstType.NORMAL) + buf += tsc.seq # Steal flag 2 / 2 buf.append(random.randint(0, 1)) @@ -128,7 +84,7 @@ class RandBurstGen: return [0] * GSM_BURST_LEN # Generate a synchronization burst - def gen_sb(self): + def gen_sb(self, tsc = None): buf = [] # Tailing bits @@ -139,7 +95,9 @@ class RandBurstGen: buf.append(random.randint(0, 1)) # Training sequence - buf += self.sb_tsc + if tsc is None: + tsc = self.get_rand_tsc(BurstType.SYNC) + buf += tsc.seq # Random data 2 / 2 for i in range(0, 39): @@ -155,14 +113,16 @@ class RandBurstGen: return self.db_bits # Generate an access burst - def gen_ab(self): + def gen_ab(self, tsc = None): buf = [] # Tailing bits buf += [0] * 8 # Training sequence - buf += self.ab_tsc + if tsc is None: + tsc = self.get_rand_tsc(BurstType.ACCESS) + buf += tsc.seq # Random data for i in range(0, 36): |