82 citations · 111 across the 11 of their papers we have counts for
13 papers
Non-binary LDPC codes for Data Storage
Irina Bocharova, Boris Kudryashov, Henk D. L. Hollmann +1
In modern data storage systems, non-binary LDPC codes for recovering from disk failures are increasingly considered strong competitors to MDS codes such as Reed-Solomon codes. Sinc…
Coset Shaping: Constructions and Bounds
Irina Bocharova, Maiara F. Bollauf, Boris Kudryashov
A new geometric shaping technique, referred to as coset shaping, is proposed and analyzed for coded QAM and PAM signaling. This method can be applied to both information and parity…
NB QC-LDPC Coded QAM Signals with Optimized Mapping: Bounds and Simulation Results
Irina E. Bocharova, Boris D. Kudryashov, Evgenii P. Ovsyannikov +1
The goal of the paper is to study specific properties of nonbinary low-density parity-check (NB LDPC) codes when used in coded modulation systems. The paper is focused on the pract…
Optimization of NB QC-LDPC Block Codes and Their Performance Analysis
Irina E. Bocharova, Boris D. Kudryashov, Evgenii P. Ovsyannikov +2
We propose an approach for optimizing nonbinary (NB) quasi-cyclic (QC) LDPC codes. This approach combines constructing of base parity-check matrices by simulated annealing and labe…
Stopping Redundancy Hierarchy Beyond the Minimum Distance
Yauhen Yakimenka, Vitaly Skachek, Irina E. Bocharova +1
Stopping sets play a crucial role in failure events of iterative decoders over a binary erasure channel (BEC). The -th stopping redundancy is the minimum number of rows in th…
ML and Near-ML Decoding of LDPC Codes Over the BEC: Bounds and Decoding Algorithms
Irina E. Bocharova, Boris D. Kudryashov, Vitaly Skachek +2
The performance of maximum-likelihood (ML) decoding on the binary erasure channel for finite-length low-density parity-check (LDPC) codes from two random ensembles is studied. The…