TY - GEN
T1 - On the achievable extrinsic information of inner decoders in serial concatenation
AU - Kliewer, Jörg
AU - Huebner, Axel
AU - Costello, Daniel J.
PY - 2006
Y1 - 2006
N2 - In this paper we address the extrinsic information transfer functions of inner decoders for a serially concatenated coding scheme. For the case of an AWGN channel, we give a universal proof for the fact that only inner encoders yielding an infinite output weight for a weight-one input sequence, such as recursive convolutional encoders, lead to perfect extrinsic information at the output of the corresponding SISO decoder. As an example we consider bit-interleaved coded modulation with iterative demapping (BICM-ID) and insert an additional recursive precoder prior to the mapping operation. Simulation results show that the proposed system does not suffer from an error floor and thus significantly outperforms BICM-ID systems that solely use mappings as inner encodings, even when they are optimized.
AB - In this paper we address the extrinsic information transfer functions of inner decoders for a serially concatenated coding scheme. For the case of an AWGN channel, we give a universal proof for the fact that only inner encoders yielding an infinite output weight for a weight-one input sequence, such as recursive convolutional encoders, lead to perfect extrinsic information at the output of the corresponding SISO decoder. As an example we consider bit-interleaved coded modulation with iterative demapping (BICM-ID) and insert an additional recursive precoder prior to the mapping operation. Simulation results show that the proposed system does not suffer from an error floor and thus significantly outperforms BICM-ID systems that solely use mappings as inner encodings, even when they are optimized.
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U2 - 10.1109/ISIT.2006.262140
DO - 10.1109/ISIT.2006.262140
M3 - Conference contribution
AN - SCOPUS:39049127546
SN - 1424405041
SN - 9781424405046
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 2680
EP - 2684
BT - Proceedings - 2006 IEEE International Symposium on Information Theory, ISIT 2006
T2 - 2006 IEEE International Symposium on Information Theory, ISIT 2006
Y2 - 9 July 2006 through 14 July 2006
ER -