diff options
Diffstat (limited to 'src/target/trx_toolkit/rand_burst_gen.py')
| -rw-r--r-- | src/target/trx_toolkit/rand_burst_gen.py | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/src/target/trx_toolkit/rand_burst_gen.py b/src/target/trx_toolkit/rand_burst_gen.py new file mode 100644 index 00000000..46c1e090 --- /dev/null +++ b/src/target/trx_toolkit/rand_burst_gen.py @@ -0,0 +1,177 @@ +#!/usr/bin/env python2 +# -*- coding: utf-8 -*- + +# TRX Toolkit +# Random burst (NB, FB, SB, AB) generator +# +# (C) 2017 by Vadim Yanitskiy <axilirator@gmail.com> +# +# All Rights Reserved +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License along +# with this program; if not, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + +import random + +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, + 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, + ] + + # 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, + ] + + # Generate a normal burst + def gen_nb(self, seq_idx = 0): + buf = [] + + # Tailing bits + buf += [0] * 3 + + # Random data 1 / 2 + for i in range(0, 57): + buf.append(random.randint(0, 1)) + + # Steal flag 1 / 2 + buf.append(random.randint(0, 1)) + + # Training sequence + buf += self.nb_tsc_list[seq_idx] + + # Steal flag 2 / 2 + buf.append(random.randint(0, 1)) + + # Random data 2 / 2 + for i in range(0, 57): + buf.append(random.randint(0, 1)) + + # Tailing bits + buf += [0] * 3 + + return buf + + # Generate a frequency correction burst + def gen_fb(self): + return [0] * GSM_BURST_LEN + + # Generate a synchronization burst + def gen_sb(self): + buf = [] + + # Tailing bits + buf += [0] * 3 + + # Random data 1 / 2 + for i in range(0, 39): + buf.append(random.randint(0, 1)) + + # Training sequence + buf += self.sb_tsc + + # Random data 2 / 2 + for i in range(0, 39): + buf.append(random.randint(0, 1)) + + # Tailing bits + buf += [0] * 3 + + return buf + + # Generate a dummy burst + def gen_db(self): + return self.db_bits + + # Generate an access burst + def gen_ab(self): + buf = [] + + # Tailing bits + buf += [0] * 8 + + # Training sequence + buf += self.ab_tsc + + # Random data + for i in range(0, 36): + buf.append(random.randint(0, 1)) + + # Tailing bits + buf += [0] * 3 + + # Guard period + buf += [0] * 60 + + return buf |