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arXiv · 2107.02327

Connecting Spatially Coupled LDPC Code Chains for Bit-Interleaved Coded Modulation

Yihuan Liao·Min Qiu·Jinhong Yuan
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Abstract

This paper investigates the design of spatially coupled low-density parity-check (SC-LDPC) codes constructed from connected-chain ensembles for bit-interleaved coded modulation (BICM) schemes. For short coupling lengths, connecting multiple SC-LDPC chains can improve decoding performance over single-chains and impose structured unequal error protection (UEP). A joint design of connected-chain ensembles and bit mapping to further exploit the UEP from codes and high-order modulations is proposed. Numerical results demonstrate the superiority of the proposed design over existing connected-chain ensembles and over single-chain ensembles with existing bit mapping design.

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Yihuan Liao, Min Qiu, Jinhong Yuan. 2021-07-06. Connecting Spatially Coupled LDPC Code Chains for Bit-Interleaved Coded Modulation. https://arxiv.org/abs/2107.02327

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