Results 41 to 50 of about 48,547 (250)

Research on unequal error protection of irregular LDPC codes

open access: yesTongxin xuebao, 2005
An irregular low-density parity-check (LDPC) code with unequal error protection (UEP) property was proposed. A weight-increasing parity-check (WIPC) matrix was constructed.
MA Pi-ming, YUAN Dong-feng, YANG Xiu-mei
doaj   +2 more sources

A Low-Complexity Euclidean Orthogonal LDPC Architecture for Low Power Applications

open access: yesThe Scientific World Journal, 2015
Low-density parity-check (LDPC) codes have been implemented in latest digital video broadcasting, broadband wireless access (WiMax), and fourth generation of wireless standards.
M. Revathy, R. Saravanan
doaj   +1 more source

Generalized LDPC Codes for Ultra Reliable Low Latency Communication in 5G and Beyond

open access: yesIEEE Access, 2018
Generalized low-density parity-check (GLDPC) codes, where single parity-check constraints on the code bits are replaced with generalized constraints (an arbitrary linear code), are a promising class of codes for low-latency communication.
Yanfang Liu   +2 more
doaj   +1 more source

Shortened Array Codes of Large Girth

open access: yes, 2006
One approach to designing structured low-density parity-check (LDPC) codes with large girth is to shorten codes with small girth in such a manner that the deleted columns of the parity-check matrix contain all the variables involved in short cycles. This
Kashyap, Navin   +2 more
core   +2 more sources

Late‐Onset Rheumatoid Arthritis and Air Pollution in the Multiethnic Cohort

open access: yesArthritis &Rheumatology, EarlyView.
Objective To evaluate the effects of ambient air pollution on rheumatoid arthritis (RA) incidence in a racially and ethnically diverse population. Methods This analysis included 42,152 California Multiethnic Cohort participants, aged ≥65 years (>70% African American and Latino adults) who were enrolled in the Fee For Service component of Medicare (2001–
Anna H. Wu   +14 more
wiley   +1 more source

Research on HARQ Technology in Low-Orbit Satellite Communication Network

open access: yes天地一体化信息网络, 2022
How to extend the HARQ technique to made it suitabled for LEO satellite communication network was explored.First the traditional HARQ technology was expounded.Based on this, the HARQ scheme based on low density parity check code (LDPC) and the HARQ ...
Runxin ZHANG   +4 more
doaj   +2 more sources

Construction of Short-length High-rates Ldpc Codes Using Difference Families [PDF]

open access: yes, 2007
Low-density parity-check (LDPC) code is linear-block error-correcting code defined by sparse parity-check matrix. It isdecoded using the massage-passing algorithm, and in many cases, capable of outperforming turbo code.
Hamdani, D. (Deny), Safrianti, E. (Ery)
core  

Statistical Mechanics of Low-Density Parity Check Error-Correcting Codes over Galois Fields [PDF]

open access: yes, 2000
A variation of low density parity check (LDPC) error correcting codes defined over Galois fields ($GF(q)$) is investigated using statistical physics.
Kabashima, Yoshiyuki   +2 more
core   +3 more sources

Chlorella vulgaris biorefineries: sustainable biofuels and high‐value carbon capture

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Global reliance on fossil fuels has created urgent economic and environmental challenges, yet large‐scale use of algal biomass remains limited by production costs. Industrial scaling is constrained by inefficient harvesting and the technical challenges of processing recalcitrant cell walls.
Sandyelle Ferreira Alcântara Araújo   +13 more
wiley   +1 more source

An LDPC Encoder Architecture With Up to 47.5 Gbps Throughput for DVB-S2/S2X Standards

open access: yesIEEE Access, 2022
Low-Density Parity-Check (LDPC) code is a type of forward error-correction code with excellent performance, and has been widely used in many modern communication standards. The second-generation satellite broadcasting standard (DVB-S2) and its extension (
Decai Liu   +7 more
doaj   +1 more source

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