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| author | Mychaela N. Falconia <falcon@freecalypso.org> | 2023-05-17 18:58:40 +0000 |
|---|---|---|
| committer | laforge <laforge@osmocom.org> | 2023-05-19 08:44:35 +0000 |
| commit | f3e4745603971f144f5f522cc366b10b297d4e02 (patch) | |
| tree | 0a8babf0105f6fc6390eb862e0f754ccd68342bc /src/coding | |
| parent | d9d61b01887c2c366df1b09226e7ecff65cc0adb (diff) | |
coding: fix decoding of EFR triplicated bits
In GSM 05.03 channel coding for EFR, there are 4 bits out of the
244-bit EFR codec frame that are triplicated before FR-like encoding,
and the decoder needs to apply a 2-out-of-3 majority voting function
to each of these triplicated bits after the FR-like decoding step.
For one of those 4 bits, this majority voting function was wrong
in the decoder implemented in gsm0503_tch_fr_decode() - fix it.
Change-Id: I47def75cdb066ed6372df4567404cc828589ed53
Diffstat (limited to 'src/coding')
| -rw-r--r-- | src/coding/gsm0503_coding.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/coding/gsm0503_coding.c b/src/coding/gsm0503_coding.c index 07c8c980..1ef63939 100644 --- a/src/coding/gsm0503_coding.c +++ b/src/coding/gsm0503_coding.c @@ -1804,7 +1804,7 @@ static void tch_efr_unreorder(ubit_t *s, ubit_t *p, const ubit_t *w) s[119] = (sum >= 2); memcpy(s + 121, w + 125, 53); sum = s[172] + w[178] + w[179]; - s[172] = (sum > 2); + s[172] = (sum >= 2); memcpy(s + 174, w + 180, 50); sum = s[222] + w[230] + w[231]; s[222] = (sum >= 2); |