By Topic

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

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Tse-Yao Chang ; Institute of Communication Engineering, National Tsing Hua University, Hsinchu, Taiwan ; Y. -W. Peter Hong

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.

Published in:

2008 IEEE 9th Workshop on Signal Processing Advances in Wireless Communications

Date of Conference:

6-9 July 2008