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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/933827

Title: On Kalman filtering over fading wireless channels with controlled transmission powers
Author/Creator: Quevedo, Daniel E.; Ahlén, Anders; Leong, Alex S.; Dey, Subhrakanti
Description: We study stochastic stability of centralized Kalmanfiltering for linear time-varying systems equipped with wireless sensors. Transmission is over fading channels where variable channel gains are counteracted by power control to alleviate the effects of packet drops. We establish sufficient conditions for the expected value of the Kalman filter covariance matrix to be exponentially bounded in norm. The conditions obtained are then used to formulate stabilizing power control policies which minimize the total sensor power budget. In deriving the optimal power control laws, both statistical channel information and full channel information are considered. The effect of system instability on the power budget is also investigated for both these cases.
Relation: Automatica Vol. 48, Issue 7, p. 1306-1316
Publisher Link: http://dx.doi.org/10.1016/j.automatica.2012.03.025
Date: 2012
Publisher: Elsevier
Keyword(s): state estimation; fading channels; packet dropouts; stochastic stability; power control
Resource Type: journal article
Identifier: http://hdl.handle.net/1959.13/933827
Identifier: ISSN:0005-1098
Language: eng

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