The INUE participated in the SCC 2025 – the International ITG Conference on Systems, Communications and Coding, which took place in Karlsruhe, Germany.
Organized by the ITG and VDE, SCC is a premier platform that connects academia and industry to explore innovations across the full spectrum of communications research. The conference is known for fostering dialogue between theoretical foundations and practical applications, making it an ideal setting for INUE to showcase new research results.
A Comparative Study of Ensemble Decoding Methods for Short Length LDPC Codes
To alleviate the suboptimal performance of belief propagation (BP) decoding of short low-density parity-check (LDPC) codes, a plethora of improved decoding algorithms has been proposed over the last two decades. Many of these methods can be described using the same general framework, which we call ensemble decoding: A set of independent constituent decoders works in parallel on the received sequence, each proposing a codeword candidate. From this list, the maximum likelihood (ML) decision is designated as the decoder output. In this paper, we qualitatively and quantitatively compare different realizations of the ensemble decoder, namely multiple-bases belief propagation (MBBP), automorphism ensemble decoding (AED), scheduling ensemble decoding (SED), noise-aided ensemble decoding (NED) and saturated belief propagation (SBP). While all algorithms can provide gains over traditional BP decoding, ensemble methods that exploit the code structure, such as MBBP and AED, typically show greater performance improvements.
