Fundamental limits of networked sensing: the flow optimization framework

  • Authors:
  • Bhaskar Krishnamachari;Fernando Ordóñez

  • Affiliations:
  • Department of Electrical Engineering-Systems, University of Southern California, Los Angeles, CA;Department of Industrial Systems Engineering, University of Southern California, Los Angeles, CA

  • Venue:
  • Wireless sensor networks
  • Year:
  • 2004

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Abstract

We describe a useful theoretical approach--the flow optimization framework --that can be used to identify the fundamental performance limits on information routing in energy-limited wireless sensor networks. We discuss the relevant recent literature, and present both linear constant-rate and non-linear adaptive rate models that optimize the tradeoff between the total information extracted (Bits) and the total energy used (Joules) for a given sensor network scenario. We also illustrate the utility of this approach through examples, and indicate possible extensions.