Energy Planning for Progressive Estimation in Multihop Sensor Networks
IEEE Transactions on Signal Processing(2009)
摘要
Multihop sensor networks where transmissions are conducted between neighboring sensors can be more efficient in energy and spectrum than single-hop sensor networks where transmissions are conducted directly between each sensor and a fusion center. With the knowledge of a routing tree from all sensors to a destination node, we present a digital transmission energy planning algorithm as well as an analog transmission energy planning algorithm for progressive estimation in multihop sensor networks. Unlike many iterative consensus-type algorithms, the proposed progressive estimation algorithms along with their transmission energy planning further reduce the network transmission energy while guaranteeing any pre-specified estimation performance at the destination node within a finite time. We also show that digital transmission is more efficient in transmission energy than analog transmission if the available transmission time-bandwidth product for each link and each observation sample is not too limited.
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关键词
distributed estimation,analog transmission,fusion center,network transmission energy,digital transmission,digital transmission energy planning,decentralized estimation,multihop sensor network,iterative consensus-type algorithm,analog transmission energy planning,multi-hop sensor networks,estimation theory,transmission energy,destination node,energy scheduling and planning,digital transmission energy planning algorithm,neighboring sensor,power scheduling and planning,progressive estimation algorithms,available transmission time-bandwidth product,telecommunication network planning,multihop sensor networks,wireless sensor networks,progressive estimation,incremental estimation,analog transmission energy planning algorithm,iterative methods,single-hop sensor networks,signal processing,sensor fusion,spectrum,spread spectrum communication,routing,wireless sensor network,quantization,sensor network,parameter estimation,engineering
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