Research Article
Cramer-Rao Bound Analysis of Location Estimation in Multi-hop Wireless Sensor Networks
@INPROCEEDINGS{10.1109/ChinaCom.2013.6694627, author={Zuoyin Tang and Jianhua He}, title={Cramer-Rao Bound Analysis of Location Estimation in Multi-hop Wireless Sensor Networks}, proceedings={8th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2013}, month={11}, keywords={cramer-rao bound location estimation wireless sensor networks performance evaluation}, doi={10.1109/ChinaCom.2013.6694627} }- Zuoyin Tang
Jianhua He
Year: 2013
Cramer-Rao Bound Analysis of Location Estimation in Multi-hop Wireless Sensor Networks
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2013.6694627
Abstract
Location estimation is important for wireless sensor network (WSN) applications. In this paper we propose a Cramer-Rao Bound (CRB) based analytical approach for two centralized multi-hop localization algorithms to get insights into the error performance and its sensitivity to the distance measurement error, anchor node density and placement. The location estimation performance is compared with four distributed multi-hop localization algorithms by simulation to evaluate the efficiency of the proposed analytical approach. The numerical results demonstrate the complex tradeoff between the centralized and distributed localization algorithms on accuracy, complexity and communication overhead. Based on this analysis, an efficient and scalable performance evaluation tool can be designed for localization algorithms in large scale WSNs, where simulation-based evaluation approaches are impractical.