diff options
| author | Tom Tsou <tom.tsou@ettus.com> | 2016-07-06 13:29:25 -0700 |
|---|---|---|
| committer | Tom Tsou <tom@tsou.cc> | 2016-07-25 18:36:29 +0000 |
| commit | 73cb583e5147a267a370c576e8ac77507de6d0d7 (patch) | |
| tree | 01586359a10410862423aad9d819fe015a444f23 /src/osmo-bts-trx/gsm0503_parity.c | |
| parent | c9582ac2d7366233ab64f2868f17071c2ddadf32 (diff) | |
trx: Add EGPRS tables, sequences, and mappings
Includes EGPRS specific convolutional codes, interleaving tables
and functions, burst mappings, training sequences, and parity
checks from 3GPP TS 44.060 needed to handle MCS codings 1-9.
Change-Id: Ie270398dd7a72f282ba53e646853d8de1eabee93
Signed-off-by: Tom Tsou <tom.tsou@ettus.com>
Diffstat (limited to 'src/osmo-bts-trx/gsm0503_parity.c')
| -rw-r--r-- | src/osmo-bts-trx/gsm0503_parity.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/osmo-bts-trx/gsm0503_parity.c b/src/osmo-bts-trx/gsm0503_parity.c index ba2e144a..65d35621 100644 --- a/src/osmo-bts-trx/gsm0503_parity.c +++ b/src/osmo-bts-trx/gsm0503_parity.c @@ -33,6 +33,29 @@ const struct osmo_crc16gen_code gsm0503_cs234_crc16 = { .remainder = 0xffff, }; +/* + * EDGE MCS header parity + * + */ + +const struct osmo_crc8gen_code gsm0503_mcs_crc8_hdr = { + .bits = 8, + .poly = 0x49, + .init = 0x00, + .remainder = 0xff, +}; + +/* + * EDGE MCS data parity + * + */ + +const struct osmo_crc16gen_code gsm0503_mcs_crc12 = { + .bits = 12, + .poly = 0x0d31, + .init = 0x0000, + .remainder = 0x0fff, +}; /* * GSM RACH parity |