Results 101 to 110 of about 12,374 (228)
Investigation of punctured LDPC codes and time-diversity on free-space optical links
, 2011 In this paper, we analyze the behavior of DVB-S2 un-punctured/punctured low-density parity-check (LDPC) coded on-off-keying (OOK) under atmospheric turbulence conditions by utilizing time diversity. A performance characterization between these schemes is
Ghassemlooy, Zabih +4 more
core
Hardware Acceleration of Beamforming in a UWB Imaging Unit for Breast Cancer Detection [PDF]
, 2013 The Ultrawideband (UWB) imaging technique for breast cancer detection is based on the fact that cancerous cells have different dielectric characteristics than healthy tissues.When a UWB pulse in the microwave range strikes a cancerous region, the ...
Graziano, Mariagrazia +4 more
core +1 more source
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
, 2023 Machine learning is a popular topic that has become a scientific research tool in many fields. Overfitting is a common challenge in machine learning, where the model fits the training data too well and performs poorly on new data. Stochastic regularization is one method used to prevent overfitting, by artificially constraining the model to be simpler ...
openaire +1 more source
, 2003 A low bit-rate video coding techniques using the H.26L standard codec for robust transmission in mobile multimedia environments are presented. For the sake of achieving error resilience, the source codec has to make provisions for error detection ...
Ng, S.X. +7 more
core +1 more source
Decoder-in-the-Loop: Genetic Optimization-Based LDPC Code Design
IEEE Access, 2019 LDPC code design tools typically rely on asymptotic code behavior and are affected by an unavoidable performance degradation due to model imperfections in the short length regime.
Ahmed Elkelesh +4 more
doaj +1 more source
Nonbinary LDPC-Coded Modulation System in High-Speed Mobile Communications
IEEE Access, 2018 As a class of capacity-approaching codes, nonbinary low-density parity-check (LDPC) codes have attracted much attention because of noticeable performance.
Dan Feng +5 more
doaj +1 more source
Design of low-density parity-check codes: An overview
, 2011 This article provides an overview of the conflicting design tradeoffs of low-density parity-check (LDPC) codes and thus advocates a more holistic approach to their design for wireless channels.
Chen, Sheng +2 more
core
RS + LDPC-Staircase Codes for the Erasure Channel: Standards, Usage and Performance [PDF]
, 2013 Application-Level Forward Erasure Correction (AL-FEC) codes are a key element of telecommunication systems. They are used to recover from packet losses when retransmission are not feasible and to optimize the large scale distribution of contents. In this
Detchart, Jonathan +4 more
core
Jointed LDPC codes design for half-duplex relay channels
Tongxin xuebao, 2013 In order to increase the coding gain of decode-and-forward half-duplex relay channel, a jointed LDPC coding structure and its corresponding optimization scheme was proposed. Novel structure made the subcodes of both source and relay nodes as parts of the
Zi-qiang CHEN +3 more
doaj +2 more sources