NDLI: Exploiting data-dependent transmission control and MAC timing information for distributed detection in sensor networks

Content Provider	IEEE Xplore Digital Library
Author	Tse-Yao Chang Hong, Y.-W.P.
Copyright Year	2008
Description	Author affiliation: Inst. of Commun. Eng., Nat. Tsing Hua Univ., Hsinchu (Tse-Yao Chang; Hong, Y.-W.P.)
Abstract	A data-dependent sensor MAC protocol and a cross-layered fusion rule, that exploits the MAC timing information, are proposed for distributed detection in sensor networks. In this system, each sensor first makes a local decision at the beginning of each observation period and transmits it to the fusion over a random access channel. Based on the slotted ALOHA random access protocol, we derive a transmission control function that assigns transmission probabilities to sensors based on the reliability of their local decisions. By doing so, the packet arrival time at the fusion center may embed soft information regarding the sensorspsila observations and may be exploited to reduce the error probability at the fusion center. We consider two observation models: in Case I, each sensor makes a new observation in each time slot; while in Case II, only one observation is made at the beginning of each observation period. We show, through numerical simulations, that the proposed schemes outperform those without cross-layered transmission and fusion strategies.
Starting Page	101
Ending Page	105
File Size	1798835
Page Count	5
File Format	PDF
ISBN	9781424420452
DOI	10.1109/SPAWC.2008.4641578
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-06
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Error probability Timing Reliability Media Access Protocol Wireless sensor networks Time division multiple access Signal to noise ratio
Content Type	Text
Resource Type	Article

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