Dear Sylvain
In code provided above there is no *conv_tch_afs_XX_XX_next_term_state* &* conv_tch_afs_10_2_next_term_state*struct for some of bitrate so its giving wrong output for convolution decode.
is it possible to give complete conv_tch_afs.c decode.
On Thu, Jul 26, 2012 at 12:23 PM, Sylvain Munaut 246tnt@gmail.com wrote:
search some materials, find that the decode method of AFS convolutional code is different from the EFS`, it use RSC, and need SOVA(soft output viterbi algorithm). am i right?
No.
It _does_ use RSC (and the viterbi code in libosmocore supports RSC). But that has nothing to do with SOVA and SOVA is _not_ required at all.
AFAIK, the AMR code I sent a while is correct. Just to be sure I attached the latest version I have. I haven't tested all the modes but at least 12.2 and 10.2 should be correct.
Cheers,
Sylvain