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Pairwise Node Localization From Differences in Their UWB Channels to Observer Nodes by Dumphart, Gregor; Kramer, Robin; Heyn, Robert; Kuhn, Marc; Wittneben, Armin is a scholarly article available to read on EtoBox.

What is Pairwise Node Localization From Differences in Their UWB Channels to Observer Nodes about?

We consider the problem of localization and distance estimation between a pair of wireless nodes in a multipath propagation environment, but not the usual way of processing a channel measurement between them. We propose a novel paradigm which compares the two nodes' ultra-wideband (UWB) channels to other nodes, called observers. The main idea is that the dissimilarity between the channel impulse responses (CIRs) increases with $d$ and allows for an estimate $\hat{d}$. Our approach relies on extracting common multipath components (MPCs) from the CIRs. This is realistic in indoor or urban scenarios and if $d$ is considerably smaller than the observer distances. We present distance estimators which utilize the rich location information contained in MPC delay differences. Likewise, we present estimators for the relative position vector which process both MPC delays and MPC directions. We do so for various important cases: with and without time synchronization, delay measurement errors, and knowledge of the MPC association between the CIRs. The estimators exhibit great technological advantages: they do not require line-of-sight conditions, observer location knowledge, or environment kno

Author

Dumphart, Gregor; Kramer, Robin; Heyn, Robert; Kuhn, Marc; Wittneben, Armin

Published

2021

Language

EN