Fluid level in a reservoir with an on-off source

  • Authors:
  • Varun Gupta;Peter G. Harrison

  • Affiliations:
  • Carnegie Mellon University;Imperial College London

  • Venue:
  • ACM SIGMETRICS Performance Evaluation Review
  • Year:
  • 2008

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Abstract

We obtain the Laplace transform of the fluid level probability density function, in terms of the on-period density function, for a fluid queue (or reservoir) with on-off input at equilibrium. We further obtain explicit expressions for the moments of fluid level in terms of the moments of the on-period and hence derive an algorithm for the moments of fluid level at every queue in a tandem network. It turns out that to calculate the kth moment at the ith queue, only the first k +1 moments of the on-period of the input process to the first queue are required.