Finite State Channels
Mostrando 1-5 de 5 artigos, teses e dissertações.
-
1. Modelo de canal de estados finitos para canais com desvanecimento correlacionado no tempo e desisÃo suave / Finite-state channel model for time-correlated fading channels with soft-decision
Modelos de canais de estados finitos Markovianos (FSMC, do inglÃs Finite State Markov Channel) sÃo comumente usados para caracterizar a memÃria de canais discretos binÃrios (entrada binÃria, saÃda binÃria). Este trabalho propÃe um novo modelo pertencente à classe FSMC, denominado de modelo com apagamento (MA), que foi idealizado para modelar canais
Publicado em: 2008
-
2. Markovian models and performance analysis of ARQ schemes on mobile channels / Modelos markovianos e anÃlise de desempenho de esquemas ARQ em canais mÃveis
O presente trabalho desenvolve modelos de canais de estados finitos (CEF) para um sistema de comunicaÃÃo discreto, composto por um modulador digital, um canal com desvanecimento plano (Rayleigh ou Rice) correlacionado no tempo e um demodulador, bem como estuda as propriedades de correlaÃÃo do processo de desvanecimento para analisar o desempenho de proto
Publicado em: 2004
-
3. Convecção natural tridimensional sobre fontes de calor discretas
In this work, the electronic component cooling is focused, aiming the understanding of the three-dimensional effects present in the natural convection on discrete or pontual heat sources. The finite volume method, implemented in the FLUENT package, was used to simulate the heat transfer processo The steady state flow was considered laminar and the properties
Publicado em: 2003
-
4. Estimation of kinetic rate constants from multi-channel recordings by a direct fit of the time series.
The maximum-likelihood technique for the direct estimation of rate constants from the measured patch clamp current is extended to the analysis of multi-channel recordings, including channels with subconductance levels. The algorithm utilizes a simplified approach for the calculation of the matrix exponentials of the probability matrix from the rate constants
-
5. Large conductance Ca(2+)-activated K+ channels are involved in both spike shaping and firing regulation in Helix neurones.
1. The role of BK-type calcium-dependent K+ channels (K+Ca) in cell firing regulation was evaluated by performing whole-cell voltage clamp and patch clamp experiments on the U cell neurones in the snail Helix pomatia. These cells were selected because most of the repolarizing K+ current flowed through K+Ca channels. 2. U cells generated overshooting Ca(2+)-d