Results 81 to 90 of about 2,457,220 (279)
Quantum Low-Density Parity-Check Codes
PRX Quantum, 2021 Quantum error correction is an indispensable ingredient for scalable quantum computing. In this Perspective we discuss a particular class of quantum codes called “quantum low-density parity-check (LDPC) codes.” The codes we discuss are alternatives to ...
Nikolas P. Breuckmann +1 more
doaj +1 more source
On the Hub Number of Ring Graphs and Their Behavior Under Graph Operations
International Journal of Mathematics and Mathematical Sciences, Volume 2025, Issue 1, 2025.This study examines the hub number of ring graphs and investigates their behavior under operations such as union, intersection, and join. Different findings for this parameter are found for a variety of types of ring graphs, such as commutative ring graphs, path ring graphs, complete ring graphs, cycle ring graphs, and star ring graphs, for which the ...
Mohammed Alsharafi +3 more
wiley +1 more source
Construction of High-Rate Regular Quasi-Cyclic LDPC Codes Based on Cyclic Difference Families [PDF]
, 2012 For a high-rate case, it is difficult to randomly construct good low-density parity-check (LDPC) codes of short and moderate lengths because their Tanner graphs are prone to making short cycles. Also, the existing high-rate quasi-cyclic (QC) LDPC codes can be constructed only for very restricted code parameters. In this paper, a new construction method
arxiv +1 more source
A New Density Evolution Approximation for LDPC and Multi-Edge Type LDPC Codes [PDF]
IEEE Transactions on Communications, 2016 This paper considers density evolution for low-density parity-check (LDPC) and multi-edge type LDPC (MET-LDPC) codes over the binary input additive white Gaussian noise channel.
Sachini Jayasooriya +4 more
semanticscholar +1 more source
Temperature Monitoring of Mass Concrete Structure Using Wireless Sensing System
Structural Control and Health Monitoring, Volume 2025, Issue 1, 2025.Rapid temperature changes during the early stages of mass concrete construction can cause thermal cracking, which negatively impacts structural integrity and longevity. Reliable temperature monitoring is essential for effective crack control. Traditional methods, such as manual inspections and wired structural health monitoring systems, are often ...
Tengyi Wang +4 more
wiley +1 more source
Construction of Quasi-Cyclic Low Density Parity Check Codes for Magnetic Induction Communication
IEEE Access, 2019 The magnetic induction (MI) communication has been proved to be an effective method in the wireless underground sensor networks (WUSN). MI communication system based on quasi-cyclic low density parity check (QC-LDPC) codes is expected to improve the ...
Hua Xu, Yanjing Sun, Wenjuan Shi
doaj +1 more source
Empirical modelling and analysis of phase noise in OFDM systems
IET Communications, Volume 18, Issue 19, Page 1358-1370, December 2024.Based on empirical data of an orthogonal frequency division multiplexing system, a new analytical model of phase noise and numerical characteristics of the common phase error and intercarrier interference are derived. When applied to estimate original symbols based on AWGN channel, the proposed algorithm based on the model performs better than the ...
Qihong Duan, Heng Du, Jiang Xue, Feng Li
wiley +1 more source
On LDPC code ensembles with generalized constraints [PDF]
2017 IEEE International Symposium on Information Theory (ISIT), 2017 This work has been funded in part by the Spanish Ministerio de Economía y Competitividad and the Agencia Española de Investigación under Grant TEC2016-78434-C3-3-R (AEI/FEDER, EU) and by the Comunidad de Madrid in Spain under Grant S2103/ICE-2845. T. Koch has further received funding from the European Research Council (ERC) under the European Union’s ...
Liu, Yanfang +2 more
openaire +3 more sources
Design of rate-compatible low-density parity-check codes for type-II hybrid ARQ systems
Tongxin xuebao, 2006 The design of powerful rate-compatible low-density parity-check codes（RC-LDPC）was constructed in zigzag structure for type-II hybrid ARQ systems.The generalized PEG algorithm was used in the process of constructing RC-LDPC codes to improve the ...
WANG Dan, WANG Xin-mei
doaj +2 more sources
Finite Length Analysis of Low-Density Parity-Check Codes on Impulsive Noise Channels
IEEE Access, 2016 Low-density parity-check (LDPC) codes with very long block lengths are well known for their powerful error correction, but it is not always desirable to employ long codes in communication systems, where latency is a serious issue, such as voice and video
Zhen Mei +3 more
doaj +1 more source