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Simplified soft output demapper for non-binary LDPC codes

Abstract : Combining non-binary LDPC codes and high order constellation, namely Bit-Interleaved Coded Modula-tion (BICM), is a simple but effective way to improve the bandwidth efficiency. Since the non-binary LDPCcodes require soft decisions as the input information, the constellation has to provide soft information(log-likelihood ratio) to it. In this paper, a simplified algorithm to calculate LLR for binary code is appliedfor non-binary code, which will remarkably reduce the computational complexity, and has nearly noperformance loss
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Submitted on : Monday, November 15, 2021 - 8:58:10 AM
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Latifa Mostari, Abdelmalik Taleb-Ahmed, Abdennacer Bounoua. Simplified soft output demapper for non-binary LDPC codes. Optik, Elsevier, 2015, 126 (24), pp.5074-5076. ⟨10.1016/j.ijleo.2015.09.210⟩. ⟨hal-03428153⟩



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