Results 11 to 20 of about 467,902 (217)

Weighted BATS Codes with LDPC Precoding

open access: yesEntropy, 2023
Batched Sparse (BATS) codes are a type of network coding scheme that use a combination of random linear network coding (RLNC) and fountain coding to enhance the reliability and efficiency of data transmission. In order to achieve unequal error protection
Wenyue Zhang, Min Zhu
doaj   +1 more source

Finite Length Analysis of Low-Density Parity-Check Codes on Impulsive Noise Channels

open access: yesIEEE 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

Improving Windowed Decoding of SC LDPC Codes by Effective Decoding Termination, Message Reuse, and Amplification

open access: yesIEEE Access, 2018
In this paper, we address a number of weaknesses of the windowed decoding of spatially coupled low-density parity-check (SC LDPC) codes and propose three modifications that simultaneously improve its performance, complexity, and latency.
Inayat Ali   +4 more
doaj   +1 more source

Long-term results of the custom- made hip endoprostheses Evolution K® and Adaptiva®: A prospective cohort study

open access: yesOrthopedic Reviews, 2021
The aim of our study is to evaluate clinical long-term results and determine changes in periprosthetic bone density of the custom-made hip prostheses Evolution-K® and Adaptiva®.
Steffen Axt   +6 more
doaj   +1 more source

Efficient Implementation of Density Evolution for Punctured Polar Codes

open access: yesIEEE Access, 2019
Polar codes asymptotically achieve the symmetric capacity of arbitrary binary-input discrete memoryless channels under low-complexity sequential decoding algorithms such as successive cancellation decoding.
Christopher Schnelling   +4 more
doaj   +1 more source

Experimental and numerical study on homogenisation of BCV bentonite using dual density samples [PDF]

open access: yesE3S Web of Conferences, 2023
Homogenisation of bentonite materials is an essential feature for its sealing function in radioactive waste repositories. Presented study is focused on the laboratory investigation of the homogenisation of Czech BCV bentonite (Ca/Mg type).
Najser Jan, Mašín David
doaj   +1 more source

Clade density and the evolution of diversity-dependent diversification

open access: yesNature Communications, 2023
The assumption of an ecological limit to the number of species in a given region is frequently invoked in evolutionary studies, yet its empirical basis is remarkably meager. We explore this assumption by integrating data on geographical distributions and
Marcio R. Pie   +2 more
doaj   +1 more source

Design Strategies for Large Current Density Hydrogen Evolution Reaction

open access: yesFrontiers in Chemistry, 2022
Hydrogen energy is considered one of the cleanest and most promising alternatives to fossil fuel because the only combustion product is water. The development of water splitting electrocatalysts with Earth abundance, cost-efficiency, and high performance
Lishang Zhang   +4 more
doaj   +1 more source

Performance of HARQ-Assisted OFDM Systems Contaminated by Impulsive Noise: Finite-Length LDPC Code Analysis

open access: yesIEEE Access, 2019
Impulsive noise (IN) constitutes a limiting factor in power-line communication systems, especially in those relying on orthogonal frequency division multiplexing (OFDM). If a single time-domain sample is contaminated by an impulse, all subcarriers become
Tong Bai   +4 more
doaj   +1 more source

The Impact of the Average Temperature, Humidity, Wind Speed, Altitude, and Population Density on Daily COVID-19 Infection Evolution

open access: yesMedical Sciences Forum, 2021
The aim of this study is to investigate the impact of climate conditions, altitude, and population density on daily COVID-19 infection evolution.
Rachid Lagtayi   +3 more
doaj   +1 more source

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