Citation
Konstantinos Gatsis, Miroslav Pajic, Alejandro Ribeiro, George Pappas. "Opportunistic control over shared wireless channels". IEEE Transactions on Automatic Control, 2014.

Abstract
We consider a wireless control architecture with multiple control loops and a shared wireless medium. A scheduler observes the random channel conditions that each control system experiences over the shared medium and opportunistically selects systems to transmit at a set of non-overlapping frequencies. The transmit power of each system also adapts to channel conditions and determines the probability of successfully transmitting and closing the loop. We formulate the problem of designing optimal channel-aware scheduling and power allocation mechanisms that minimize the total power consumption while meeting control performance requirements for all systems. In particular it is required that for each control system a given Lyapunov function decreases at a specified rate in expectation over the random channel conditions. We develop an offline algorithm to find the optimal communication design, as well as an online protocol which selects scheduling and power variables based on a random observed channel sequence and converges almost surely to the optimal operating point. We illustrate in simulations the power savings of our approach compared to other non-channel-aware schemes.

Electronic downloads

• https://www.src.org/library/publication/p070350/. (Link to paper on SRC website.)
• http://dx.doi.org/10.1109/TAC.2015.2416922

• HTML

  Konstantinos Gatsis, Miroslav Pajic, Alejandro Ribeiro,
  George Pappas. <a
  href="http://www.terraswarm.org/pubs/318.html"
  >Opportunistic control over shared wireless
  channels</a>, <i>IEEE Transactions on Automatic
  Control</i>,  2014.

• Plain text

  Konstantinos Gatsis, Miroslav Pajic, Alejandro Ribeiro,
  George Pappas. "Opportunistic control over shared
  wireless channels". <i>IEEE Transactions on
  Automatic Control</i>,  2014.

• BibTeX

  @article{GatsisPajicRibeiroPappas14_OpportunisticControlOverSharedWirelessChannels,
      author = {Konstantinos Gatsis and Miroslav Pajic and
                Alejandro Ribeiro and George Pappas},
      title = {Opportunistic control over shared wireless channels},
      journal = {IEEE Transactions on Automatic Control},
      year = {2014},
      abstract = {We consider a wireless control architecture with
                multiple control loops and a shared wireless
                medium. A scheduler observes the random channel
                conditions that each control system experiences
                over the shared medium and opportunistically
                selects systems to transmit at a set of
                non-overlapping frequencies. The transmit power of
                each system also adapts to channel conditions and
                determines the probability of successfully
                transmitting and closing the loop. We formulate
                the problem of designing optimal channel-aware
                scheduling and power allocation mechanisms that
                minimize the total power consumption while meeting
                control performance requirements for all systems.
                In particular it is required that for each control
                system a given Lyapunov function decreases at a
                specified rate in expectation over the random
                channel conditions. We develop an offline
                algorithm to find the optimal communication
                design, as well as an online protocol which
                selects scheduling and power variables based on a
                random observed channel sequence and converges
                almost surely to the optimal operating point. We
                illustrate in simulations the power savings of our
                approach compared to other non-channel-aware
                schemes. },
      URL = {http://terraswarm.org/pubs/318.html}
  }
  

Posted by Barb Hoversten on 28 May 2014.
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