Results 51 to 60 of about 26,841 (236)

Split-extended LDPC codes for coded cooperation [PDF]

open access: yes2010 International Symposium On Information Theory & Its Applications, 2010
We propose a new code design that aims to distribute an LDPC code over a relay channel. It is based on a split-and-extend approach, which allows the relay to split the set of bits connected to some parity-check of the LDPC code into two or several subsets. Subsequently, the sums of bits within each subset are used in a repeat-accumulate manner in order
openaire   +2 more sources

Dynamic Continuous Variable Quantum Key Distribution for Securing a Future Global Quantum Network

open access: yesAdvanced Quantum Technologies, Volume 8, Issue 10, October 2025.
The article explores securing a dynamic global quantum network using continuous variable QKD, proposing a unified three‐layer network architecture for integrating existing QKD networks. It evaluates secret key rates across various channels and introduces the link capacity as a metric for determining the optimum path for secret key distribution in a ...
Mikhael T. Sayat   +4 more
wiley   +1 more source

Encoding of QC-LDPC Codes of Rank Deficient Parity Matrix

open access: yesJournal of Engineering, 2016
the encoding of long low density parity check (LDPC) codes presents a challenge compared to its decoding. The Quasi Cyclic (QC) LDPC codes offer the advantage for reducing the complexity for both encoding and decoding due to its QC structure.
Mohammed Kasim Mohammed Al-Haddad
doaj   +2 more sources

Hierarchical and High-Girth QC LDPC Codes

open access: yes, 2011
We present a general approach to designing capacity-approaching high-girth low-density parity-check (LDPC) codes that are friendly to hardware implementation.
Draper, Stark C.   +2 more
core   +2 more sources

A Simple Proof of Maxwell Saturation for Coupled Scalar Recursions [PDF]

open access: yes, 2014
Low-density parity-check (LDPC) convolutional codes (or spatially-coupled codes) were recently shown to approach capacity on the binary erasure channel (BEC) and binary-input memoryless symmetric channels.
Jian, Yung-Yih   +3 more
core   +1 more source

QMM‐Enhanced Error Correction: Demonstrating Reversible Imprinting and Retrieval for Robust Quantum Computation

open access: yesAdvanced Quantum Technologies, Volume 8, Issue 9, September 2025.
Hardware experiments show a single‐layer Quantum Memory Matrix booster cuts logical error sixfold and, when prepended to a [3,1,3]$[3,1,3]$ repetition code, attains 94 % logical fidelity without extra CX gates. QMM dressing also lowers variational‐training loss by 35 %, offering a measurement‐free, resource‐light route to error suppression on NISQ ...
Florian Neukart   +3 more
wiley   +1 more source

Novel construction of quasi-cyclic low-density parity-check codes with variable code rates for cloud data storage systems

open access: yesETRI Journal, 2023
This paper proposed a novel method for constructing quasi-cyclic low-density parity-check (QC-LDPC) codes of medium to high code rates that can be applied in cloud data storage systems, requiring better error correction capabilities.
Vairaperumal Bhuvaneshwari   +1 more
doaj   +1 more source

Cost‐Effective DNA Storage System with DNA Movable Type

open access: yesAdvanced Science, Volume 12, Issue 9, March 6, 2025.
This study presents a cost‐effective “DNA‐movable‐type storage” system inspired by movable type printing. Utilizing reusable prefabricated DNA‐MTs and an automated inkjet printer, BISHENG‐1 stores and retrieves 43.7 KB of data in vitro and in vivo with only 350 DNA‐MTs, achieving storage costs of $122 MB−1–significantly more cost‐efficient than ...
Chenyang Wang   +30 more
wiley   +1 more source

New decoding scheme for LDPC codes based on simple product code structure

open access: yes, 2012
In this paper, a new decoding scheme for low-density parity-check (LDPC) codes using the concept of simple product code structure is proposed based on combining two independently received soft-decision data for the same codeword.
Hong, Seokbeom   +4 more
core   +1 more source

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