[op25-dev] rs decoder in hdu.cc
mike at ossmann.com
Mon Jul 15 05:58:45 UTC 2013
On Sun, Jul 14, 2013 at 07:13:56PM -0400, Matt D wrote:
> We are getting the data messages out of the HDU. So how is this so if
> we are not doing the error check? Is it not necessary for extracting
> the data information?
All of the error correcting block codes used in P25 are the sort where
the codeword includes the encoded data verbatim; the code appends bits
used for error correction, but a receiver can ignore those and just pull
out the data bits. This greatly increases the likelihood of
post-decoding bit errors, but it works fine when the SNR is good.
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