Results 21 to 30 of about 202,859 (188)

Low error floor LT coding algorithm by using fixed-length node classification window

Tongxin xuebao, 2021
To solve the problem of high error floor for LT codes in additive white Gaussian noise (AWGN) channels, an improved coding scheme was designed.A fixed-length classification window was used to sort out the information nodes with relatively small degrees ...
Xin SONG, Naiping CHENG, Shuyan NI, Yurong LIAO, Tuofeng LEI   +4 more
doaj   +2 more sources

Examining Social Determinants of Health During a Pandemic: Clinical Application of Z Codes Before and During COVID-19

Frontiers in Public Health, 2022
Recognition of the impact of social determinants of health (SDoH) on healthcare outcomes, healthcare service utilization, and population health has prompted a global shift in focus to patient social needs and lived experiences in assessment and treatment.
Xueying Yang, Xueying Yang, Brooks Yelton, Shujie Chen, Shujie Chen, Jiajia Zhang, Jiajia Zhang, Bankole A. Olatosi, Bankole A. Olatosi, Shan Qiao, Shan Qiao, Xiaoming Li, Xiaoming Li, Daniela B. Friedman, Daniela B. Friedman   +14 more
doaj   +1 more source

Performance Analysis and Design of LT Codes Under the Gaussian Elimination Algorithm in Wireless Sensor Networks

IEEE Access, 2019
With the growing demand, wireless sensor networks (WSNs) play an increasingly important role in many fields. The focus has been on deploying Luby transform (LT) codes in WSNs because of their inherent advantages in erasure channels.
Chuang Wang, Longlong Suo, Dongming Bian, Jing Lv, Shiwei Tian   +4 more
doaj   +1 more source

Variation in COVID-19 Diagnosis by Zip Code and Race and Ethnicity in Indiana

Frontiers in Public Health, 2020
Objectives: To describe variations in coronavirus disease 2019 (COVID-19) diagnosis by zip code race and ethnicity in Indiana.Methods: Cross-sectional evaluation of subjects with SARS-CoV-2 at Indiana University Health. We performed two separate analyses,
Amy E. Hanson, David S. Hains, Andrew L. Schwaderer, Michelle C. Starr   +3 more
doaj   +1 more source

A spherical shell numerical dynamo benchmark with pseudo vacuum magnetic boundary conditions [PDF]

, 2014
It is frequently considered that many planetary magnetic fields originate as a result of convection within planetary cores. Buoyancy forces responsible for driving the convection generate a fluid flow that is able to induce magnetic fields; numerous ...
A. Jackson, A. Ribeiro, A. Sheyko, A. Tilgner, Balay, Balay, Balay, Brackbill, Busse, Busse, C. Nore, Chan, Christensen, Christensen, Cébron, D. Cébron, F. Busse, G. Schubert, Gissinger, Glatzmaier, Guermond, Guermond, Guermond, Guervilly, Harder, Hauke, Hindmarsh, J.-L. Guermond, Jones, Jouve, Kageyama, Karypis, Kim, Marti, Matsui, Miyagoshi, P. Marti, R. Simitev, Roberts, S. Takehiro, S. Vantieghem, Sasaki, Simitev, Simitev, Simitev, Simkanin, Thelen, Tilgner, Tilgner, Tóth, Vantieghem, Wicht, Willis, Wu, X. Zhan, Y. Sasaki, Y.-Y. Hayashi, Zhang   +57 more
core   +5 more sources

Buffer-Based Distributed LT Codes

IEEE Transactions on Communications, 2014
We focus on the design of distributed Luby transform (DLT) codes for erasure networks with multiple sources and multiple relays, communicating to a single destination. The erasure-floor performance of DLT codes improves with the maximum degree of the relay-degree distribution.
Iqbal Hussain, Ming Xiao, Lars Kildehoj Rasmussen   +2 more
openaire   +5 more sources

Expanding window fountain codes for unequal error protection [PDF]

, 2009
A novel approach to provide unequal error protection (UEP) using rateless codes over erasure channels, named Expanding Window Fountain (EWF) codes, is developed and discussed.
Doufexi, A, Piechocki, RJ, Sejdinovic, D, Senk, V, Vukobratovic, D   +4 more
core   +1 more source

Efficient Symbol Sorting for High Intermediate Recovery Rate of LT Codes

, 2010
LT codes are modern and efficient rateless forward error correction (FEC) codes with close to channel capacity performance. Nevertheless, in intermediate range where the number of received encoded symbols is less than the number of source symbols, LT ...
Rahnavard, Nazanin, Shahrasbi, Behzad, Talari, Ali   +2 more
core   +1 more source

On a class of optimal rateless codes [PDF]

, 2008
—In this paper we analyze a class of systematic fountain/rateless codes constructed using Bernoulli(1/2) random variables. Using simple bounds we then show that this class of codes stochastically minimizes the number of coded packets receptions needed to
Douglas J. Leith, Vijay G. Subramanian
core   +2 more sources

CPRSD for LT codes

IET Communications, 2016
Degree distribution has a great influence on the performance of Luby Transform (LT) codes. In this study, the authors study a new degree distribution for LT codes. First, improved Poisson distribution (IPD) is proposed by refining the PD. The successful decoding rate for IPD reaches more than 90% when the decoder receives less encoding symbols, while ...
Weiqing Yao, Benshun Yi, Weizhong Li, Taiqi Huang, Qiuying Xie   +4 more
openaire   +1 more source