| Paper: | SAM-P2.5 | ||
| Session: | Sensor Networks I | ||
| Time: | Tuesday, May 16, 16:30 - 18:30 | ||
| Presentation: | Poster | ||
| Topic: | Sensor Array and Multichannel Signal Processing: Sensor network signal processing | ||
| Title: | ACTIVE WIRELESS SENSING: SPACE-TIME INFORMATION RETRIEVAL FROM SENSOR ENSEMBLES | ||
| Authors: | Thiagarajan Sivanadyan, Akbar Sayeed, University of Wisconsin-Madison, United States | ||
| Abstract: | In this paper, we introduce the concept of Active Wireless Sensing in which a wireless information retriever (WIR) interrogates an ensemble of nodes for rapid and energy-efficient retrieval of desired information. The sensor nodes have limited computational ability, whereas the WIR is computationally powerful, is equipped with an antenna array, and directly interrogates the sensor ensemble with wideband space-time waveforms. Our approach is based on an intimate connection between Active Wireless Sensing and wideband multi-antenna wireless multipath channels: the sensor nodes play the role of active scatterers and generate a multipath response to WIR's interrogation signals. We illustrate the basic communication architecture in and preliminary simulation results are presented to illustrate a fundamental rate versus reliability tradeoff. | ||
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