  Delayed bit-interleaved coded modulation (DBICM) generalizes bit-interleaved
coded modulation (BICM) by modulating differently delayed sub-blocks of
codewords onto the same signals. DBICM improves transmission reliability over
BICM due to its capability of detecting undelayed sub-blocks with the extrinsic
information of the decoded delayed sub-blocks. In this work, we propose a novel
windowed decoding algorithm for DBICM, which uses the extrinsic information of
both the decoded delayed and undelayed sub-blocks, to improve the detection on
all sub-blocks. Numerical results show that the proposed windowed decoding
significantly outperforms the original decoding.
