Cramér-Rao Lower bound for geolocation in non-line-of-sight environment
- 1 May 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 3 (15206149) , III-2473-2473
- https://doi.org/10.1109/icassp.2002.5745148
Abstract
Geolocation in an non-line-of-sight (NLOS) environment is an important issue in wireless communications. Several empirical approaches have been proposed in recent years. However, two fundamental questions still remain unanswered: what is the achievable geolocation accuracy in the NLOS environment and how to attain it. In this paper, we derive a closed-form expression of the Cramér-Rao Lower bound (CRLB) for NLOS geolocation, which we believe is new and answers the first question. Its physical interpretation turns out to be very helpful to better understanding of NLOS geolocation mechanism. We discuss some numerical examples based on simulation experiments.Keywords
This publication has 1 reference indexed in Scilit:
- The non-line of sight problem in mobile location estimationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002