A Simple Wake-up Scheme Based on Ultra-Wideband Beamforming


Florian Trösch, Frank Althaus, and Armin Wittneben


IEEE Workshop on Smart Antennas, WSA 2006, Ulm, Germany, Mar. 2006.

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Ultra-Wideband Impulse Radio is a promising technology for Low-Data-Rate/ Location-Tracking sensor networks merging low power, low complexity system designs with good localization capabilities. Considered network consists of a large number of semi-active sensor nodes and a static wireless backbone. During idle times only a lowest power wakeup detector is active at sensor side reducing power consumption. Besides acting as data source or sink, the backbone, consisting of distributed UWB-IR devices, coordinates the sensor network by triggering specific nodes by means of beamforming. Feasibility of the scheme is shown, while a certain amount of non-feasible areas remain. Scaling of the nonfeasible areas as a function of backbone antennas is analyzed. Moreover, good performance results are presented for scenarios where a minimal separation between sensor nodes and backbone antennas is guaranteed.


Ultra-Wideband, Beamforming, Wake-up, Low Data Rate

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