DocumentCode :
1963099
Title :
SPRTs in sensor networks with mobile agents
Author :
Marano, Stefano ; Matta, Vincenzo ; Willett, P. ; Tong, Lang
Author_Institution :
DIIIE, Univ. di Salerno, Fisciano, Italy
fYear :
2005
fDate :
5-8 June 2005
Firstpage :
920
Lastpage :
924
Abstract :
We assume a detection network engaged in the task of sequentially testing simple Gaussian hypotheses. The network architecture follows the SENMA paradigm but, as opposed to the usual assumptions, the mobile agent (rover) implements continuous-time polling. This, along with a Poisson random field model for the sensor locations (which are completely unknown to the rover), allows us to avoid channel collision concerns. The remote sensors employ Wald sequential tests (SPRTs) so that, when any is eventually polled, it may have reached a (local) decision. The rover also implements an SPRT using as observables the local decisions (amounting to some counting processes). The idea behind is that of reducing the time needed to end up with a final decision by the rover, with respect to similar, but nonsequential, schemes. The local SPRTs, moreover, ensure energy savings in terms of communication needs.
Keywords :
Gaussian channels; mobile agents; sequential estimation; telecommunication congestion control; wireless sensor networks; Gaussian hypotheses; Poisson random field model; SENMA; SPRT; Wald sequential test; channel collision avoidance; continuous-time polling; energy saving; mobile agent; network architecture; sensor network; Batteries; Detectors; Energy consumption; Intelligent networks; Mobile agents; Remote sensing; Sensor phenomena and characterization; Sequential analysis; Source coding; Wireless sensor networks;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2005 IEEE 6th Workshop on
Print_ISBN :
0-7803-8867-4
Type :
conf
DOI :
10.1109/SPAWC.2005.1506274
Filename :
1506274
Link To Document :
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