Error analysis of quantised RSSI based sensor network localisation
by Hongchi Shi, Xiaoli Li, Yi Shang, Dianfu Ma
International Journal of Wireless and Mobile Computing (IJWMC), Vol. 4, No. 1, 2010

Abstract: Localising sensor nodes is an essential process for self-organising Wireless Sensor Networks (WSNs). A few recently-proposed localisation algorithms use Received Signal Strength Indication (RSSI) readings usually available in WSNs for node localisation. However, the behaviours of RSSI-based localisation systems have not been thoroughly investigated. In this paper, we formulate the problem of localisation using quantised RSSI as a parameter estimation problem and derive the Cramer-Rao Lower Bound (CRLB) for the localisation problem. We then study the effect of quantisation level and network configuration parameters on the lower bound of localisation error variance.

Online publication date: Thu, 14-Jan-2010

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