TY - JOUR
T1 - On the joint source-channel decoding of variable-length encoded sources
T2 - The BSC case
AU - Subbalakshmi, K. P.
AU - Vaisey, Jacques
PY - 2001/12
Y1 - 2001/12
N2 - This paper proposes an optimal maximum a posteriori probability decoder for variable-length encoded sources over binary symmetric channels that uses a novel state-space to deal with the problem of variable-length source codes in the decoder. This sequential, finite-delay, joint source-channel decoder delivers substantial improvements over the conventional decoder and also over a system that uses a standard forward error correcting code operating at the same over all bit rates. This decoder is also robust to inaccuracies in the estimation of channel statistics.
AB - This paper proposes an optimal maximum a posteriori probability decoder for variable-length encoded sources over binary symmetric channels that uses a novel state-space to deal with the problem of variable-length source codes in the decoder. This sequential, finite-delay, joint source-channel decoder delivers substantial improvements over the conventional decoder and also over a system that uses a standard forward error correcting code operating at the same over all bit rates. This decoder is also robust to inaccuracies in the estimation of channel statistics.
KW - Error resilient communication
KW - Joint source-channel decoding
KW - MAP decoding
KW - Variable length codes
UR - http://www.scopus.com/inward/record.url?scp=0035703636&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035703636&partnerID=8YFLogxK
U2 - 10.1109/26.974247
DO - 10.1109/26.974247
M3 - Letter
AN - SCOPUS:0035703636
SN - 0090-6778
VL - 49
SP - 2052
EP - 2055
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 12
ER -