Title :
A Simple Ultra-Wideband Wake-up Scheme for Semi-Active Sensor Nodes
Author :
Troesch, Florian ; Wittneben, Armin
Author_Institution :
Commun. Technol. Lab., ETH Zurich
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 :
telecommunication network topology; ultra wideband communication; wireless sensor networks; asymmetric network topology; location-tracking sensor network design; power consumption; semiactive sensor node; static wireless backbone communication; ultra-wideband wake-up scheme; Array signal processing; Bandwidth; Detectors; Energy consumption; Network topology; Sensor systems; Spine; Ultra wideband technology; Wireless communication; Wireless sensor networks;
Conference_Titel :
Ultra-Wideband, The 2006 IEEE 2006 International Conference on
Conference_Location :
Waltham, MA
Print_ISBN :
1-4244-0101-1
Electronic_ISBN :
1-4244-0102-X
DOI :
10.1109/ICU.2006.281627
