Bit-Metric Decoding of Non-Binary LDPC Codes with Probabilistic Amplitude Shaping
Information Theory
2018-09-12 v1 math.IT
Abstract
A new approach for combining non-binary low-density parity-check (NB-LDPC) codes with higher-order modulation and probabilistic amplitude shaping (PAS) is presented. Instead of symbol-metric decoding (SMD), a bit-metric decoder (BMD) is used so that matching the field order of the non-binary code to the constellation size is not needed, which increases the flexibility of the coding scheme. Information rates, density evolution thresholds and finite-length simulations show that the flexibility comes at no loss of performance if PAS is used.
Cite
@article{arxiv.1809.04037,
title = {Bit-Metric Decoding of Non-Binary LDPC Codes with Probabilistic Amplitude Shaping},
author = {Fabian Steiner and Georg Böcherer and Gianluigi Liva},
journal= {arXiv preprint arXiv:1809.04037},
year = {2018}
}
Comments
Accepted for IEEE Communication Letters