2004•IEEE Communications LettersRequires access

The Cramer–Rao Bounds of Hybrid TOA/RSS and TDOA/RSS Location Estimation Schemes

Amer Catovic, Z. Şahinoğlu

Abstract

The Cramer-Rao bound (CRB) on location estimation accuracy of two different hybrid schemes, time of arrival/received signal strength (TOA/RSS) and time difference of arrival/received signal strength (TDOA/RSS), is computed. For short-range networks, the hybrid schemes offer improved accuracy with respect to conventional TOA and TDOA schemes, particularly in the proximity of the reference devices.

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Key concepts: Multilateration, RSS, Cramér–Rao bound, Time of arrival, Computer science, Algorithm, Signal strength, Upper and lower bounds