Signal Strength Localization Bounds in Ad Hoc and Sensor Networks when Transmit Powers are Random | Zendy

Neal Patwari | Zendy; Alfred O. Hero | Zendy

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Signal Strength Localization Bounds in Ad Hoc and Sensor Networks when Transmit Powers are Random

Author(s) -

Neal Patwari,

Alfred O. Hero

Publication year - 2006

Publication title -

citeseer x (the pennsylvania state university)

Language(s) - English

Resource type - Conference proceedings

DOI - 10.1109/sam.2006.1677207

Subject(s) - signal strength , wireless ad hoc network , computer science , signal (programming language) , wireless sensor network , computer network , telecommunications , wireless , programming language

Sensor localization bounds have been derived assuming that received signal strength (RSS) measurements are performed with perfectly known sensor transmit powers. In this paper the Bayesian Cramer-Rao bound is derived assuming transmit powers are random with known prior distribution. Further, both directional measurements on each link, from i to j and from j to i, and their correlation, are explicitly considered. Results show that random transmit powers have a small (5-13%) impact on coordinate estimation bounds. However, using only the average of the directional measurements can significantly increase these bounds

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