- Title
- Energy efficient state estimation with wireless sensors through the use of predictive power control and coding
- Creator
- Quevedo, Daniel E.; Ahlén, Anders; Østergaard, Jan
- Relation
- IEEE Transactions on Signal Processing Vol. 58, Issue 9, p. 4811-4823
- Publisher Link
- http://dx.doi.org/10.1109/TSP.2010.2050883
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2010
- Description
- We study state estimation via wireless sensors over fading channels. Packet loss probabilities depend upon time-varying channel gains, packet lengths and transmission power levels of the sensors. Measurements are coded into packets by using either independent coding or distributed zero-error coding. At the gateway, a time-varying Kalman filter uses the received packets to provide the state estimates. To trade sensor energy expenditure for state estimation accuracy, we develop a predictive control algorithm which, in an online fashion, determines the transmission power levels and codebooks to be used by the sensors. To further conserve sensor energy, the controller is located at the gateway and sends coarsely quantized power increment commands, only whenever deemed necessary. Simulations based on real channel measurements illustrate that the proposed method gives excellent results.
- Subject
- packet loss; power control; scheduling; source coding; state estimation; wireless sensors
- Identifier
- http://hdl.handle.net/1959.13/804877
- Identifier
- uon:6761
- Identifier
- ISSN:1053-587X
- Rights
- Copyright © 2010 IEEE. Reprinted from IEEE Transactions on Signal Processing. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Newcastle's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
- Language
- eng
- Full Text
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