Protograph-based LDPC code design for bit-metric decoding
F Steiner, G Böcherer, G Liva - 2015 IEEE International …, 2015 - ieeexplore.ieee.org
F Steiner, G Böcherer, G Liva
2015 IEEE International Symposium on Information Theory (ISIT), 2015•ieeexplore.ieee.orgA protograph-based low-density parity-check (LDPC) code design technique for bandwidth-
efficient coded modulation is presented. The approach jointly optimizes the LDPC code
node degrees and the mapping of the coded bits to the bit-interleaved coded modulation
(BICM) bit-channels. For BICM with uniform input and for BICM with probabilistic shaping,
binary-input symmetric-output surrogate channels are constructed and used for code design.
The constructed codes perform as good as multi-edge type codes of Zhang and …
efficient coded modulation is presented. The approach jointly optimizes the LDPC code
node degrees and the mapping of the coded bits to the bit-interleaved coded modulation
(BICM) bit-channels. For BICM with uniform input and for BICM with probabilistic shaping,
binary-input symmetric-output surrogate channels are constructed and used for code design.
The constructed codes perform as good as multi-edge type codes of Zhang and …
A protograph-based low-density parity-check (LDPC) code design technique for bandwidth-efficient coded modulation is presented. The approach jointly optimizes the LDPC code node degrees and the mapping of the coded bits to the bit-interleaved coded modulation (BICM) bit-channels. For BICM with uniform input and for BICM with probabilistic shaping, binary-input symmetric-output surrogate channels are constructed and used for code design. The constructed codes perform as good as multi-edge type codes of Zhang and Kschischang (2013). For 64-ASK with probabilistic shaping, a blocklength 64800 code is constructed that operates within 0.69 dB of 1 over 2 log2(1 + SNR) at a spectral efficiency of 4.25 bits/channel use and a frame error rate of 10-3.
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