Capacity of queues via point-process channels

Rajesh Sundaresan, Sergio Verdú

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


A conceptually simple proof for the capacity formula of an exponential server timing channel is provided. The proof links the timing channel to the point-process channel with instantaneous noiseless feedback. This point-process approach enables a study of timing channels that arise in multiserver queues, queues in tandem, and other simple configurations. Although the capacities of such channels remain to be found, the paper provides some analytical bounds and highlights a method to find achievable rates via simulations.

Original languageEnglish (US)
Pages (from-to)2697-2709
Number of pages13
JournalIEEE Transactions on Information Theory
Issue number6
StatePublished - Jun 2006

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Science Applications
  • Library and Information Sciences


  • Channels with feedback
  • Direct-detection photon channel
  • Intensity
  • Nonlinear filtering
  • Point process
  • Poisson channel
  • Queue
  • Rate
  • Timing channel


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