Cadigos Corretores De Erros
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Construction of linear block codes via digital transforms / ConstruÃÃo de cÃdigos de bloco lineares via transformadas digitais
Novas famÃlias de cÃdigos corretores de erros, criados a partir da transformada numÃrica de Fourier (CÃdigos de Fourier) e de transformadas trigonomÃtricas sobre corpos finitos (CÃdigos FFCT tipo 4 par, do inglÃs finite field cosine transform, e CÃdigos FFST tipo 4 par, do inglÃs finite field sine transform), sÃo apresentadas nesta dissertaÃÃo. A
Publicado em: 2009
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2. ConstruÃÃo de cÃdigos de bloco lineares via transformadas digitais
New families of error-correcting codes, created from the Fourier number theoretic transform (Fourier Codes) and from trigonometric transforms over finite fields (FFCT-4e and FFST-4e Codes), are introduced in this dissertation. The code parity-check matrix, its dimension and minimum distance are obtained from the eigenstructure of the unitary Fourier number t
Publicado em: 2009
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3. Study of a class of rateless codes for data transmission over erasure channels / Estudo de uma classe de cÃdigos sem-taxa para transmissÃo de dados em canais com apagamento
Erasure channels have been extensively used as appropriate models for data transmission over packet based communication networks, which have the Internet as its most notable example. The research on codes capable of dealing with erasures, guaranteeing reliability and efficiency on the utilization of such channels, has been the subject of much research on com
Publicado em: 2007
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4. CÃdigos corretores de erros para gravaÃÃo magnÃtica
As the need for data explodes with the passage of time as well as the demand for more computing power, data storage becomes more and more important. Magnetic recording using error correcting codes has turned out to be a good solution to make highly reliable and efficient systems. The focus of this dissertation is on how to achieve data reliability and effici
Publicado em: 2003