A Simple Ultra-Wideband Wake-up Scheme for Semi-Active Sensor Nodes

Authors

Florian Trösch and Armin Wittneben

Reference

IEEE International Conference on Ultra-Wideband, ICUWB 2006, Waltham, Massachusetts, USA, Sept. 2006.

[BibTeX, LaTeX, and HTML Reference]

Abstract

Ultra-wideband impulse radio (UWB-IR) merges low complexity system design with good localization capabilities enabling low-data-rate/location-tracking (LDR/LT) sensor network design. However power consumption of the sensor nodes is a fundamental problem. Therefore, a simple wake-up scheme for asymmetric network topologies is investigated, where a static wireless backbone communicates with many semi-active sensor nodes. At sensor side only a low power wake-up detector is active during idle times to reduce power consumption. The wireless backbone consists of distributed UWB-IR devices and triggers the sensor nodes by means of beamforming, exploiting the large UWB-IR bandwidth to highly concentrate energy in a specified area. Conditions for basic feasibility of the scheme are derived and promising performance results based on realistic simulations are presented.

Keywords

ultra-wideband (uwb), network organization, multi-access-control (MAC) wake-up, low-complexity, energy detector, wireless backbone

Download this document:

Copyright Notice: © 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.