On the construction of structured LDPC codes free of small trap** sets

DV Nguyen, SK Chilappagari… - IEEE Transactions …, 2012 - ieeexplore.ieee.org
We present a method to construct low-density parity-check (LDPC) codes with low error
floors on the binary symmetric channel. Codes are constructed so that their Tanner graphs …

The ADMM penalized decoder for LDPC codes

X Liu, SC Draper - IEEE Transactions on Information Theory, 2016 - ieeexplore.ieee.org
Linear programming (LP) decoding for low-density parity-check codes was introduced by
Feldman et al. and has been shown to have theoretical guarantees in several regimes …

Predicting failures in power grids: The case of static overloads

M Chertkov, F Pan, MG Stepanov - IEEE Transactions on Smart …, 2010 - ieeexplore.ieee.org
Here we develop an approach to predict power grid weak points, and specifically to
efficiently identify the most probable failure modes in static load distribution for a given …

Graph-cover decoding and finite-length analysis of message-passing iterative decoding of LDPC codes

PO Vontobel, R Koetter - arxiv preprint cs/0512078, 2005 - arxiv.org
The goal of the present paper is the derivation of a framework for the finite-length analysis of
message-passing iterative decoding of low-density parity-check codes. To this end we …

An information theoretical framework for analysis and design of nanoscale fault-tolerant memories based on low-density parity-check codes

B Vasic, SK Chilappagari - … on Circuits and Systems I: Regular …, 2007 - ieeexplore.ieee.org
In this paper, we develop a theoretical framework for the analysis and design of fault-tolerant
memory architectures. Our approach is a modification of the method developed by Taylor …

ADMM check node penalized decoders for LDPC codes

H Wei, AH Banihashemi - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
Alternating direction method of multipliers (ADMM) is an efficient implementation of linear
programming (LP) decoding for low-density parity-check (LDPC) codes. By adding penalty …

Finding all small error-prone substructures in LDPC codes

CC Wang, SR Kulkarni, HV Poor - IEEE Transactions on …, 2009 - ieeexplore.ieee.org
It is proven in this work that it is NP-complete to exhaustively enumerate small error-prone
substructures in arbitrary, finite-length low-density parity-check (LDPC) codes. Two error …

Instanton-based techniques for analysis and reduction of error floors of LDPC codes

SK Chilappagari, M Chertkov… - IEEE Journal on …, 2009 - ieeexplore.ieee.org
We describe a family of instanton-based optimization methods developed recently for the
analysis of the error floors of low-density parity-check (LDPC) codes. Instantons are the most …

Pseudo-codeword landscape

M Chertkov, M Stepanov - 2007 IEEE International Symposium …, 2007 - ieeexplore.ieee.org
We discuss the performance of low-density-parity-check (LDPC) codes decoded by means
of linear programming (LP) at moderate and large signal-to-noise-ratios (SNR). Utilizing a …

An efficient pseudocodeword search algorithm for linear programming decoding of LDPC codes

M Chertkov, MG Stepanov - IEEE Transactions on Information …, 2008 - ieeexplore.ieee.org
In linear programming (LP) decoding of a low-density parity-check (LDPC) code one
minimizes a linear functional, with coefficients related to log-likelihood ratios, over a …