Results 21 to 30 of about 37,023 (238)

Multilevel Structured Low-Density Parity-Check Codes [PDF]

2008 IEEE International Conference on Communications, 2008
Low-density parity-check (LDPC) codes are typically characterized by a relatively high-complexity description, since a considerable amount of memory is required in order to store their code description, which can be represented either by the connections of the edges in their Tanner graph or by the non-zero entries in their parity-check matrix (PCM ...
Bonello, Nicholas, Chen, Sheng, Hanzo, Lajos   +2 more
openaire   +2 more sources

An improved method for counting 6-cycles in low-density parity-check codes [PDF]

Serbian Journal of Electrical Engineering, 2023
Since their rediscovery in the early 1990s, low-density parity-check (LDPC) codes have become the most popular error-correcting codes owing to their excellent performance. An LDPC code is a linear block code that has a sparse parity-check matrix.
Slimani Djamel, Kaddai Abdellah
doaj   +1 more source

An Efficient Construction Method for Quasi-Cyclic Low Density Parity Check Codes

IEEE Access, 2017
In this paper, we propose an optimized belief propagation (OBP) based progressive edge-growth (PEG) method for constructing quasi-cyclic low density parity check (QC-LDPC) codes. In this proposed method, Tanner graphs are built by progressively appending
Yiming Lei, Mingke Dong
doaj   +1 more source

Design of Low-Density Parity-Check Code Pair for Joint Source-Channel Coding Systems Based on Graph Theory

Entropy, 2023
In this article, a graph-theoretic method (taking advantage of constraints among sets associated with the corresponding parity-check matrices) is applied for the construction of a double low-density parity-check (D-LDPC) code (also known as LDPC code ...
Yijie Lv, Jiguang He, Weikai Xu, Lin Wang   +3 more
doaj   +1 more source

Untainted Puncturing for Irregular Low-Density Parity-Check Codes [PDF]

, 2012
Puncturing is a well-known coding technique widely used for constructing rate-compatible codes. In this paper, we consider the problem of puncturing low-density parity-check codes and propose a new algorithm for intentional puncturing.
Elkouss, David, Martin, Vicente, Martinez-Mateo, Jesus   +2 more
core   +6 more sources

Efficient Search of Compact QC-LDPC and SC-LDPC Convolutional Codes with Large Girth

, 2018
We propose a low-complexity method to find quasi-cyclic low-density parity-check block codes with girth 10 or 12 and shorter length than those designed through classical approaches.
Baldi, Marco, Battaglioni, Massimo, Chiaraluce, Franco, Tadayon, Mohammad H., Tasdighi, Alireza   +4 more
core   +1 more source

Analysis of reaction and timing attacks against cryptosystems based on sparse parity-check codes

, 2019
In this paper we study reaction and timing attacks against cryptosystems based on sparse parity-check codes, which encompass low-density parity-check (LDPC) codes and moderate-density parity-check (MDPC) codes.
A Becker, A Nilsson, DJ Bernstein, E Berlekamp, E Eaton, E Prange, H Niederreiter, J Stern, K Kobara, M Baldi, M Baldi, P Santini, PJ Lee, Q Guo, RG Gallager, T Fabšič, T Fabšič   +16 more
core   +1 more source

Compact QC-LDPC Block and SC-LDPC Convolutional Codes for Low-Latency Communications

, 2018
Low decoding latency and complexity are two important requirements of channel codes used in many applications, like machine-to-machine communications. In this paper, we show how these requirements can be fulfilled by using some special quasi-cyclic low ...
Baldi, Marco, Battaglioni, Massimo, Chiaraluce, Franco, Tadayon, Mohammad H., Tasdighi, Alireza   +4 more
core   +1 more source

Statistical Mechanics of Broadcast Channels Using Low Density Parity Check Codes [PDF]

, 2002
We investigate the use of Gallager's low-density parity-check (LDPC) codes in a broadcast channel, one of the fundamental models in network information theory.
D.J. Thouless, David Saad, H.A. Bethe, Kazutaka Nakamura, N. Sourlas, P.P. Bergmans, R.G. Gallager, Robert Morelos-Zaragoza, T. Richardson, T.M. Cover, T.M. Cover, W. Van Gils, W. Van Gils, Y. Iba, Y. Kabashima, Y. Kabashima, Yoshiyuki Kabashima   +16 more
core   +2 more sources

Chloroplast Stress Signals Orchestrate Epidermis‐Specific Remodeling of Mitochondria and ER Under High Light

Advanced Science, EarlyView.
High light exposure triggers an epidermis‐specific remodeling of mitochondria and ER in Arabidopsis, driven by chloroplast‐derived signals. Live‐cell imaging shows that HL rapidly suppresses mitochondrial motility, followed by fusion‐driven elongation and ER cisternal expansion.
Evan R. Angelos, Hee‐Seung Choi, Jingzhe Guo, Andrea A. Zanini, Tessa M. Burch‐Smith, Emily Snyder, Matthew Part, Wilhelmina van de Ven, Manhoi Hur, Gerd Ulrich Balcke, Alain Tissier, Quanqing Zhang, Katayoon Dehesh   +12 more
wiley   +1 more source