One-Shot Capacity of discret Channels

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2010

Autores

R.A.Costa (Autor) Outra; M. Langberg (Autor) Outra; J. Barros (Autor) FEUP

Ata de Conferência Internacional

Título: IEEE International Symposium on Information Theory (ISIT 2010), Austin TX, June 2010

Páginas: 211-215

IEEE International Symposium on Information Theory (ISIT 2010), Austin TX, June 2010

Austin TX, JUL 13-13, 2010

Indexação

ISI Web of Science

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

Outras Informações

DOI: 10.1109/ISIT.2010.5513244

Abstract (EN): Shannon defined channel capacity as the highest rate at which there exists a sequence of codes of block length n such that the error probability goes to zero as n goes to infinity. In this definition, it is implicit that the block length, which can be viewed as the number of available channel uses, is unlimited. This is not the case when the transmission power must be concentrated on a single transmission, most notably in military scenarios with adversarial conditions or delay-tolerant networks with random short encounters. A natural question arises: how much information can we transmit in a single use of the channel? We give a precise characterization of the one-shot capacity of discrete channels, defined as the maximum number of bits that can be transmitted in a single use of a channel with an error probability that does not exceed a prescribed value. This capacity definition is shown to be useful and significantly different from the zero-error problem statement.

Idioma: Inglês

Tipo (Avaliação Docente): Científica