This paper was presented at 3rd International Workshop on Localized Communication and Topology Protocols for Ad hoc Networks (LOCAN 2007) held in Pisa (Italy) on 8 October 2007.

Abstract: The use of wireless sensor networks has been proposed for a large spectrum of location-dependent applications. Because of the current restrictions on processing power, power supplies and sensor hardware, most of the current systems struggle between accuracy and complexity. Seeking to provide the current location of nodes with a minimum additional cost to each sensor nodes, several location tracking systems have proposed different techniques based on received radio signal strength. In this paper we present a quantitative evaluation of several location tracking systems techniques based on radio signal strength indication through trace-driven simulations. Our work shows that previous assumptions on the limitations of these techniques do
not consider the transmission of messages with several signal strengths which improves considerably the accuracy of these systems