A Distributed Transmitter for the Sensor Reachback Problem Based on Radar Signals

  • Lav R. Varshney
  • Sergio D. Servetto


We consider the problem of reachback communication in sensor networks. In this problem, a large number of sensors are deployed on a field, to measure the state of some physical process that unfolds over the field and to then cooperatively send this information back to a distant receiver for further processing. We formulate the problem as a multiple-input, single-output (MISO) system, and develop a time-division scheme based on transmission of simulated radar echoes. Information is encoded in the spatial electromagnetic reflectivity function of virtual point reflectors, and decoded with a conventional range radar receiver. Transmitter diversity and the use of pulse compression radar waveforms are exploited for both increased reliability and increased data rate. Information theoretic and simulation-based performance characterizations are also presented.


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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • Lav R. Varshney
    • 1
  • Sergio D. Servetto
    • 1
  1. 1.School of Electrical and Computer EngineeringCornell UniversityIthaca

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