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Multiple-access insights from bounds on sensor localization

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2 Author(s)
Venkatesh, S. ; Mobile & Portable Radio Res. Group, Virginia Tech, Blacksburg, VA ; Buehrer, R.M.

In this paper, we build on known bounds on localization in sensor networks and provide new insights that can be used in multiple-access design from a localization perspective. Specifically, we look at the Cramer-Rao lower bound (CRLB)for the estimation of a sensor's location given unbiased Gaussian range estimates from a set of location-aware "anchor" nodes. A novel characterization of the accuracy of sensor location-estimates is derived, which provides new insights into the design of multiple-access schemes from the perspective of sensor localization accuracy. These insights are validated through the investigation of the performance of a spread-spectrum based multiple-access scheme in an ultra-wideband sensor network

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World of Wireless, Mobile and Multimedia Networks, 2006. WoWMoM 2006. International Symposium on a

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